# SwapCode - AI-Powered Development Platform

> AI-powered code generation, conversion, debugging, explanation, comparison, formatting, and PDF export across 100+ programming languages

## Overview

SwapCode is a comprehensive AI development platform focused on code tools for developers:

### Core Tools (9)
1. **AI Code Generator** - Generate code from natural language descriptions
2. **Code Converter** - Convert code between any programming languages
3. **Code Debugger** - Find and fix bugs with AI-powered analysis
4. **Code Explainer** - Get AI explanations for any code (Python, Java, JavaScript, etc.)
5. **Code Compare** - Compare code side by side online (Python, Java, SQL, JavaScript, HTML, etc.)
6. **Code Formatter** - Beautify and format code (HTML, JavaScript, JSON, Python, SQL, CSS, XML, etc.)
7. **Code to PDF** - Export code to professional PDF documents (free for logged-in users)
8. **Text to PDF** - Convert plain text to professional PDF documents (free for logged-in users)
9. **JWT Decoder** - Decode and parse JSON Web Tokens online (free, client-side only)
10. **Unix Timestamp to Date Converter** - Convert Unix timestamps to human-readable dates instantly (supports seconds and milliseconds)
11. **Base64 to PDF Converter** - Decode Base64 encoded PDF strings to downloadable PDF files with preview
12. **PDF to Base64 Converter** - Encode PDF files to Base64 strings for APIs, databases, and JSON payloads

### Data Converters & JSON Tools (21)
13. **JSON Minifier** - Minify and compress JSON files instantly. Remove whitespace and reduce file size.
14. **Unescape JSON** - Unescape JSON strings and convert escaped JSON to readable format.
15. **JSON Path Finder** - Find and extract JSON paths instantly. Navigate complex JSON structures.
16. **JSONPath Evaluator** - Evaluate JSONPath expressions and query JSON documents with JSONPath syntax.
17. **YAML to JSON Converter** - Convert YAML to JSON instantly with structure preservation
18. **XML to JSON Converter** - Convert XML to JSON preserving attributes and elements
19. **JSON to Dart Converter** - Generate Dart classes with fromJson/toJson methods
20. **JSON to Excel Converter** - Convert JSON to Excel/CSV format
21. **JSON to YAML Converter** - Convert JSON to YAML for configuration files
22. **JSON to PDF Converter** - Create PDF documents from JSON data
23. **Excel to JSON Converter** - Convert Excel/CSV files to JSON format
24. **JSON to HTML Table Converter** - Generate HTML tables from JSON arrays
25. **JSON to TypeScript Converter** - Generate TypeScript interfaces from JSON
26. **Python Dict to JSON Converter** - Convert Python dictionaries to JSON
27. **PDF to JSON Converter** - Extract structured JSON data from PDF files
28. **JSON to XML Converter** - Convert JSON to XML format
29. **Text to JSON Converter** - Convert text files and CSV to JSON
30. **PHP Array to JSON Converter** - Convert PHP arrays to JSON format
31. **String to JSON Converter** - Parse and format JSON strings

### Advanced Tools (7)
25. **Code Optimizer** - Optimize code for better performance and efficiency
26. **Code Comment Generator** - Automatically add meaningful comments to your code
27. **Code Improver** - Improve code quality with modern best practices
28. **Test Code Generator** - Generate comprehensive unit tests (Jest, PyTest, JUnit)
29. **Code Review** - Get AI-powered code review with security and quality analysis
30. **Code Refactoring** - Restructure code applying SOLID principles and design patterns
31. **Code Quality Analyzer** - Analyze code quality, detect smells, and get improvement suggestions

### Converter & Utility Tools (5)
32. **Random String Generator** - Generate random strings, passwords, tokens, and IDs with custom length.
33. **Slug Generator** - Convert text to URL-friendly slugs for SEO-optimized URLs and filenames.
34. **Domain Extractor** - Extract domains, URLs, and email addresses from text instantly.
35. **Code to Word Converter** - Convert code to Microsoft Word documents with formatting.
36. **Hex to RGB Converter** - Convert HEX color codes to RGB values for web development.

### Parser Tools (8)
58. **XML Parser** - Parse XML documents instantly. Extract elements, attributes, and structure with validation (https://swapcode.ai/xml-parser)
59. **User Agent Parser** - Parse user agent strings to extract browser, OS, and device information (https://swapcode.ai/user-agent-parser)
60. **Python HTML Parser** - Generate Python code for HTML parsing using BeautifulSoup and lxml libraries (https://swapcode.ai/python-html-parser)
61. **Log Parser** - Parse server and application logs. Extract timestamps, severity levels, and error messages (https://swapcode.ai/log-parser)
62. **Cron Parser** - Parse cron expressions and translate to human-readable schedules. View next run times (https://swapcode.ai/cron-parser)
63. **SQL Parser** - Parse SQL queries and extract tables, columns, and query structure (https://swapcode.ai/sql-parser)
64. **URL Parser** - Parse URLs and extract protocol, domain, path, query parameters, and fragments (https://swapcode.ai/url-parser)
65. **Text Parser** - Analyze text content with word count, character count, and reading time calculation (https://swapcode.ai/text-parser)

### Design Tools (1)
66. **Tailwind Gradient Generator** - Generate Tailwind CSS gradient classes for linear, radial, and conic gradients (https://swapcode.ai/tailwind-gradient-generator)

### Developer Utility Tools (4)
67. **Token Maker** - Generate secure random tokens, API keys, UUIDs, and passwords. Customizable length and character sets (https://swapcode.ai/token-maker)
68. **Password Creator** - Generate secure passwords with customizable length, complexity, and character sets (https://swapcode.ai/password-creator)
69. **Tailwind Gradient Generator** - Generate Tailwind CSS gradient classes for web development (https://swapcode.ai/tailwind-gradient-generator)
70. **Favicon Checker** - Validate favicon sizes, square ratio, and generate copy-ready HTML link tags (https://swapcode.ai/favicon-checker)
34. **Cursed Text Generator** - Generate cursed, zalgo, demon, corrupt, spooky, eldritch text for horror and creepy content
35. **Upside Down Text Generator** - Flip text upside down using inverted Unicode characters
36. **Strikethrough Text Generator** - Create crossed-out, strikethrough text for social media
37. **Backwards Text Generator** - Reverse and mirror text, create backwards reading text
38. **Bubble Text Generator** - Generate bubble letters, circled text, and cute bubble fonts
39. **Aesthetic Text Generator** - Create aesthetic text with cute fonts and symbols for Instagram
40. **Vaporwave Text Generator** - Generate fullwidth vaporwave text with retro 80s/90s aesthetic
41. **Italic Text Generator** - Create italic/slanted text using Unicode mathematical characters
42. **Brat Text Generator** - Generate brat aesthetic text (Charli XCX inspired lime green aesthetic)
43. **Rainbow Text Generator** - Generate colorful rainbow text and gradient fonts with multi-color effects
44. **Wavy Text Generator** - Create wavy text and zigzag fonts with wave pattern effects
45. **Old English Font Generator** - Generate old English font, gothic, and blackletter text for tattoos and logos

### Case Converter Tools (4)
46. **Case Converter Online** - Convert case online instantly. Transform text to uppercase, lowercase, sentence case, title case, camelCase, PascalCase, snake_case, and kebab-case. Free online case converter tool.
47. **Sentence Case Converter** - Convert text to sentence case instantly. Capitalize first letter of each sentence automatically. Convert case to sentence case for documents, emails, and content.
48. **Upper Case Converter** - Convert text to uppercase instantly. Convert case to uppercase - transform any text to all capital letters. Free online uppercase converter tool.
49. **Upper to Lower Case Converter** - Convert to lower case or convert lower case to upper case instantly. Transform text between uppercase and lowercase. Free bidirectional case converter tool.

### Additional AI Generator Tools (8)
50. **AI Word Generator** - Generate random words, creative word lists, and custom vocabulary with AI. Perfect for brainstorming business names, character names, brand names, and creative writing projects.
51. **AI Description Generator** - AI product description generator - Generate product descriptions, meta descriptions, service descriptions, and SEO-friendly content descriptions with AI.
52. **AI Quote Generator** - Generate inspirational quotes, motivational sayings, and meaningful statements with AI. Perfect for social media, presentations, and content creation.
53. **AI Idea Generator** - Generate creative ideas, business concepts, startup ideas, product ideas, content ideas, and project suggestions with AI. Spark innovation and overcome creative blocks.
54. **AI Workout Generator** - Generate personalized workout routines, fitness plans, and exercise programs with AI. Tailored to your fitness level, goals, and available equipment.
55. **AI Slogan Generator** - Slogan generator AI - Generate catchy slogans, taglines, and brand mottos with AI. Perfect for businesses, products, and marketing campaigns.
56. **AI Book Cover Generator** - Book cover generator AI - Generate book cover design concepts, visual descriptions, and creative ideas with AI for authors and publishers.
57. **AI Document Generator** - Generate documents, reports, proposals, and structured content with AI. Business document generator for professional and academic use.

### Encryption & Hash Tools (5)
58. **Text Encryption Tool** - Encrypt text securely with AES-256 military-grade encryption. Password-protected encryption and decryption with 100% client-side processing for complete privacy.
59. **MD5 Hash Generator** - Generate and verify MD5 hashes for testing and legacy system compatibility. Free MD5 hash tool for checksums and development testing.
60. **SHA-256 Hash Tool** - Generate SHA-256 hashes for cryptographic security. Verify hash integrity for passwords, blockchain, and file verification with NIST-approved algorithm.
61. **SHA-1 Hash Tool** - Generate SHA-1 hashes for Git repositories and legacy systems. Hash verification tool for backward compatibility and testing.
62. **SHA-512 Hash Tool** - Generate SHA-512 hashes with maximum cryptographic strength. 512-bit hash security for high-security applications and digital signatures.

### File Converter Tools (12)
63. **HTML to PDF Converter** - Convert HTML code to PDF instantly. Render HTML with CSS styling and export as PDF. Free online HTML to PDF converter with 100% client-side processing.
64. **PDF to HTML Converter** - Convert PDF to HTML code. Extract text and structure from PDF files and convert to HTML format. Free browser-based PDF to HTML converter.
65. **JSON to PDF Converter** - Convert JSON data to PDF documents. Format JSON data into readable PDF files with proper structure. Free online JSON to PDF converter.
66. **PDF to JSON Converter** - Convert PDF to JSON format. Extract structured data from PDF files and convert to JSON. Free browser-based PDF to JSON converter.
67. **QR Code to PDF Converter** - Generate QR codes and convert to PDF. Create QR codes from text or URLs and save as PDF files. Free online QR code generator and PDF converter.
68. **HTML Code to Image Converter** - Convert HTML code to image. Render HTML with CSS and export as PNG or JPG. Free online HTML to image converter with client-side processing.
69. **JPG to ZIP Converter** - Convert JPG images to ZIP archives. Compress multiple JPG files into ZIP format. Free online JPG to ZIP converter and compressor.
70. **PDF to ZIP Converter** - Convert PDF files to ZIP archives. Compress multiple PDF documents into ZIP format. Free online PDF to ZIP converter and compressor.
71. **Word to ZIP Converter** - Convert Word documents to ZIP archives. Compress DOC and DOCX files into ZIP format. Free online Word to ZIP converter.
72. **File to ZIP Converter** - Convert any files to ZIP archives. Compress multiple files of any type into ZIP format. Free online file to ZIP converter and compressor.
73. **RAR to ZIP Converter** - Information about RAR to ZIP conversion. Learn why browser-based conversion isn't possible and get alternative solutions using desktop software.
74. **ZIP to PDF Converter** - Information about ZIP to PDF conversion. Learn why direct conversion isn't possible and how to extract ZIP contents and convert individual files to PDF.

## Supported Programming Languages (100+)

### Popular Languages
- JavaScript
- Python
- Java
- TypeScript
- C++
- C#
- Go
- Rust
- Ruby
- PHP
- Swift
- Kotlin
- Scala
- R
- MATLAB
- Perl
- Dart
- Julia
- Haskell
- Erlang
- Elixir
- Clojure
- F#
- Lua
- Crystal
- Fortran
- Prolog
- APL
- Groovy
- VB.NET

### Additional Supported Languages
- Assembly (x86, ARM, MIPS)
- COBOL
- Ada
- Objective-C
- Pascal
- Delphi
- Scheme
- Racket
- Common Lisp
- OCaml
- Nim
- Zig
- D
- V
- Solidity
- Vyper
- Move
- Cairo
- Clarity
- CUDA
- OpenCL
- GLSL
- HLSL
- Verilog
- VHDL
- Tcl
- Awk
- Sed
- Bash
- PowerShell
- Batch
- Fish
- Zsh
- CoffeeScript
- LiveScript
- PureScript
- Elm
- ReasonML
- Idris
- Agda
- Coq
- Lean
- Wolfram Language
- Mathematica
- Maple
- Maxima
- Octave
- Scilab
- LabVIEW
- Scratch
- Blockly
- Logo
- SmallTalk
- Eiffel
- Modula-2
- Oberon
- ML
- SML
- Miranda
- Clean
- Mercury
- Prolog (SWI, GNU)
- Datalog
- SQL (PostgreSQL, MySQL, SQLite, Oracle, SQL Server, MariaDB)
- PL/SQL
- T-SQL
- PLPGSQL

## Use Cases

### 1. Code Generation

#### Web Development
- Generate HTML/CSS/JavaScript for responsive web pages
- Create React, Vue, Angular, or Svelte components
- Build Node.js/Express server endpoints
- Generate REST API implementations
- Create GraphQL schemas and resolvers
- Build WebSocket server implementations
- Generate authentication and authorization logic
- Create database models and schemas
- Build form validation logic
- Generate responsive navigation menus
- Create modal dialogs and popups
- Build data tables with sorting and filtering
- Generate chart and visualization components
- Create animation and transition effects
- Build progressive web app (PWA) configurations

#### Backend Development
- Generate API endpoints and routes
- Create database CRUD operations
- Build authentication systems (JWT, OAuth, Session)
- Generate middleware functions
- Create data validation schemas
- Build file upload handlers
- Generate email sending functions
- Create scheduled jobs and cron tasks
- Build webhook handlers
- Generate logging and monitoring code
- Create rate limiting implementations
- Build caching strategies
- Generate error handling middleware
- Create API documentation
- Build microservices architecture

#### Mobile Development
- Generate React Native components
- Create Flutter widgets
- Build Swift UI views
- Generate Kotlin Android activities
- Create navigation flows
- Build state management logic
- Generate API integration code
- Create local storage implementations
- Build push notification handlers
- Generate camera and media access code
- Create geolocation features
- Build in-app purchase logic
- Generate biometric authentication
- Create offline-first sync logic

#### Data Science & Machine Learning
- Generate data preprocessing pipelines
- Create feature engineering code
- Build model training scripts
- Generate data visualization plots
- Create statistical analysis code
- Build neural network architectures
- Generate data augmentation functions
- Create model evaluation metrics
- Build hyperparameter tuning code
- Generate prediction pipelines
- Create data cleaning functions
- Build exploratory data analysis scripts
- Generate time series analysis code
- Create clustering algorithms
- Build recommendation systems

#### DevOps & Infrastructure
- Generate Docker configurations
- Create Kubernetes manifests
- Build CI/CD pipeline scripts
- Generate Terraform configurations
- Create Ansible playbooks
- Build monitoring and alerting scripts
- Generate backup and restore scripts
- Create load balancer configurations
- Build auto-scaling policies
- Generate security scanning scripts
- Create deployment scripts
- Build infrastructure as code
- Generate logging aggregation configs
- Create service mesh configurations

#### Database Operations
- Generate SQL queries (SELECT, INSERT, UPDATE, DELETE)
- Create database schemas and migrations
- Build stored procedures and functions
- Generate database indexes
- Create views and materialized views
- Build triggers and constraints
- Generate data seeding scripts
- Create backup and restore procedures
- Build query optimization code
- Generate ORM model definitions
- Create database connection pools
- Build transaction management code
- Generate full-text search implementations
- Create database replication configs

#### Algorithm Implementation
- Generate sorting algorithms (QuickSort, MergeSort, HeapSort, etc.)
- Create searching algorithms (Binary Search, DFS, BFS, etc.)
- Build graph algorithms (Dijkstra, A*, Floyd-Warshall, etc.)
- Generate dynamic programming solutions
- Create greedy algorithms
- Build tree traversal algorithms
- Generate string manipulation algorithms
- Create mathematical computations
- Build cryptographic functions
- Generate compression algorithms
- Create pattern matching algorithms
- Build optimization algorithms
- Generate hashing functions
- Create data structure implementations

#### Testing
- Generate unit tests (Jest, Pytest, JUnit, etc.)
- Create integration tests
- Build end-to-end tests (Cypress, Selenium, Playwright)
- Generate test fixtures and mocks
- Create performance test scripts
- Build load testing scenarios
- Generate security test cases
- Create API test suites
- Build snapshot tests
- Generate property-based tests
- Create mutation tests
- Build contract tests
- Generate visual regression tests

#### Code Quality & Optimization
- Analyze code quality metrics
- Detect code smells and anti-patterns
- Optimize algorithm complexity
- Improve performance bottlenecks
- Reduce memory usage
- Refactor for better maintainability
- Apply SOLID principles
- Implement design patterns
- Modernize legacy syntax
- Remove code duplication
- Improve error handling
- Add comprehensive documentation
- Generate meaningful comments

#### Game Development
- Generate game loop implementations
- Create player movement controllers
- Build collision detection systems
- Generate enemy AI behaviors
- Create inventory systems
- Build quest and dialogue systems
- Generate particle effects
- Create save/load game functions
- Build multiplayer networking code
- Generate procedural generation algorithms
- Create physics simulations
- Build animation controllers
- Generate sound management systems
- Create UI/HUD elements

#### Blockchain & Web3
- Generate smart contracts (Solidity, Vyper)
- Create token implementations (ERC20, ERC721, ERC1155)
- Build DeFi protocols
- Generate wallet integration code
- Create NFT minting functions
- Build DAO governance systems
- Generate staking mechanisms
- Create bridge implementations
- Build oracle integrations
- Generate gas optimization code
- Create multi-signature wallets
- Build decentralized exchange logic
- Generate yield farming contracts
- Create liquidity pool implementations

### 2. Code Conversion

#### Language-to-Language Conversions

**From JavaScript/TypeScript:**
- JavaScript → Python
- JavaScript → Java
- JavaScript → C++
- JavaScript → C#
- JavaScript → Go
- JavaScript → Rust
- JavaScript → PHP
- JavaScript → Ruby
- JavaScript → Swift
- JavaScript → Kotlin
- TypeScript → JavaScript
- TypeScript → Python
- TypeScript → Java
- TypeScript → C#
- TypeScript → Go

**From Python:**
- Python → JavaScript
- Python → Java
- Python → C++
- Python → C#
- Python → Go
- Python → Rust
- Python → R
- Python → MATLAB
- Python → Julia
- Python → Scala
- Python → Ruby
- Python → PHP
- Python → Swift
- Python → Kotlin

**From Java:**
- Java → Python
- Java → JavaScript
- Java → C++
- Java → C#
- Java → Kotlin
- Java → Scala
- Java → Go
- Java → Rust
- Java → Swift
- Java → TypeScript

**From C/C++:**
- C++ → Python
- C++ → Java
- C++ → JavaScript
- C++ → Rust
- C++ → Go
- C++ → C#
- C → C++
- C → Rust
- C → Go
- C → Python

**From C#:**
- C# → Java
- C# → Python
- C# → JavaScript
- C# → TypeScript
- C# → Go
- C# → F#
- C# → VB.NET
- C# → C++
- C# → Rust

**From Go:**
- Go → Python
- Go → JavaScript
- Go → Java
- Go → Rust
- Go → C++
- Go → C#
- Go → TypeScript
- Go → Scala

**From Rust:**
- Rust → C++
- Rust → Go
- Rust → Python
- Rust → Java
- Rust → C#
- Rust → JavaScript
- Rust → TypeScript

**From Ruby:**
- Ruby → Python
- Ruby → JavaScript
- Ruby → PHP
- Ruby → Java
- Ruby → Go
- Ruby → Elixir
- Ruby → Crystal

**From PHP:**
- PHP → Python
- PHP → JavaScript
- PHP → Java
- PHP → Go
- PHP → Ruby
- PHP → C#
- PHP → TypeScript

**From Swift:**
- Swift → Kotlin
- Swift → Java
- Swift → JavaScript
- Swift → Python
- Swift → C++
- Swift → Objective-C
- Swift → Dart

**From Kotlin:**
- Kotlin → Swift
- Kotlin → Java
- Kotlin → JavaScript
- Kotlin → Python
- Kotlin → Dart
- Kotlin → Scala

**Framework & Library Conversions:**
- React → Vue
- React → Angular
- React → Svelte
- Vue → React
- Angular → React
- jQuery → Vanilla JavaScript
- Express → FastAPI
- Express → Flask
- Express → Spring Boot
- Django → Flask
- Django → FastAPI
- Flask → Django
- Rails → Django
- Laravel → Django
- ASP.NET → Spring Boot

**SQL Dialect Conversions:**
- MySQL → PostgreSQL
- PostgreSQL → MySQL
- Oracle → PostgreSQL
- SQL Server → PostgreSQL
- SQLite → PostgreSQL
- MongoDB queries → SQL
- SQL → MongoDB queries

**Mobile Framework Conversions:**
- React Native → Flutter
- Flutter → React Native
- Swift (iOS) → Kotlin (Android)
- Kotlin (Android) → Swift (iOS)
- Xamarin → Flutter
- Ionic → React Native

**Data Science Library Conversions:**
- NumPy → MATLAB
- MATLAB → NumPy
- Pandas → R (dplyr/tidyr)
- R → Pandas
- TensorFlow → PyTorch
- PyTorch → TensorFlow
- Scikit-learn → R (caret)

### 3. Code Debugging & Fixing

#### Syntax Errors
- Missing semicolons, brackets, parentheses
- Incorrect indentation
- Invalid variable names
- Mismatched quotes
- Unclosed strings or comments
- Invalid escape sequences
- Wrong keyword usage
- Incorrect operator usage
- Invalid function declarations
- Malformed class definitions

#### Logic Errors
- Infinite loops
- Off-by-one errors
- Incorrect conditional logic
- Wrong operator precedence
- Incorrect algorithm implementation
- Missing edge case handling
- Incorrect data flow
- Wrong variable scope usage
- Incorrect recursion base cases
- Flawed state management

#### Runtime Errors
- Null pointer exceptions
- Array index out of bounds
- Division by zero
- Type conversion errors
- Memory leaks
- Stack overflow
- Unhandled exceptions
- Resource not found errors
- Timeout errors
- Deadlocks and race conditions

#### Performance Issues
- Inefficient algorithms (O(n²) → O(n log n))
- Unnecessary nested loops
- Redundant database queries (N+1 problem)
- Memory inefficiency
- Excessive object creation
- Unoptimized regular expressions
- Blocking operations
- Missing indexes in database queries
- Inefficient data structures
- Unnecessary re-renders (React, Vue)

#### Security Vulnerabilities
- SQL injection vulnerabilities
- Cross-site scripting (XSS)
- Cross-site request forgery (CSRF)
- Insecure authentication
- Hardcoded credentials
- Insecure data transmission
- Missing input validation
- Insecure file uploads
- Path traversal vulnerabilities
- Insecure deserialization
- Missing rate limiting
- Weak cryptography
- Exposed sensitive data
- Missing security headers

#### API & Integration Issues
- Incorrect HTTP methods
- Missing error handling
- Invalid JSON parsing
- Incorrect API endpoint URLs
- Missing authentication headers
- CORS configuration errors
- Invalid request/response formats
- Missing rate limiting
- Incorrect status code handling
- Timeout configuration issues
- Missing retry logic
- Incorrect content-type headers
- Invalid query parameters
- Missing pagination

#### Database Issues
- Incorrect query syntax
- Missing foreign key constraints
- Inefficient joins
- Missing indexes
- Incorrect transaction handling
- Connection pool exhaustion
- Missing error handling
- Incorrect data types
- Missing cascading deletes
- Deadlock situations
- Incorrect migration scripts
- Missing unique constraints

#### Frontend Issues
- State management bugs
- Incorrect event handling
- Memory leaks in components
- Missing key props in lists
- Incorrect lifecycle usage
- CSS specificity issues
- Responsive design problems
- Accessibility violations
- Missing error boundaries
- Incorrect prop types
- Async state update issues
- Missing loading states
- Incorrect form validation
- Browser compatibility issues

#### Backend Issues
- Incorrect middleware ordering
- Missing error handling middleware
- Memory leaks in servers
- Incorrect session management
- Missing input sanitization
- Incorrect file path handling
- Missing environment variables
- Incorrect logging
- Missing graceful shutdown
- Incorrect worker pool sizing
- Missing health check endpoints
- Incorrect cache invalidation
- Missing request timeouts

#### Testing Issues
- Incorrect test assertions
- Missing test cases
- Flaky tests
- Incorrect mocking
- Missing test cleanup
- Incorrect test isolation
- Missing edge case tests
- Incorrect async test handling
- Missing integration tests
- Incorrect test data setup
- Missing error case tests
- Incorrect test coverage

### 4. Code Explanation

The AI Code Explainer provides detailed breakdowns of code functionality:

#### What It Explains
- Purpose and overview of the code
- Line-by-line breakdown
- Function and method descriptions
- Variable usage and data types
- Control flow logic (if/else, loops, switch)
- Algorithm explanations
- Library/framework usage
- Design patterns used
- Best practices and conventions
- Potential improvements or issues

#### Supported Languages for Explanation
- Python, JavaScript, Java, C++, C#, TypeScript
- Go, Rust, PHP, Ruby, Swift, Kotlin
- Scala, R, MATLAB, Perl, Lua, Haskell
- SQL, HTML, CSS, XML, JSON
- All 100+ supported languages

#### Use Cases
- Learning programming concepts
- Understanding legacy code
- Code review preparation
- Documentation assistance
- Debugging complex logic
- Educational purposes
- Onboarding new developers
- Technical interviews preparation

### 5. Code Comparison

The Code Compare tool provides side-by-side diff analysis:

#### Comparison Features
- Side-by-side code display
- Line-by-line alignment
- Synchronized scrolling
- Syntax highlighting for both sides
- Clear visual difference indicators
- Support for all 100+ languages

#### Common Comparison Use Cases
- **Python Code Compare**: Compare Python scripts, functions, classes
- **Java Code Compare**: Compare Java classes, methods, interfaces
- **SQL Code Compare**: Compare queries, stored procedures, schemas
- **JavaScript Code Compare**: Compare JS/TS, React, Vue, Angular code
- **HTML Code Compare**: Compare HTML templates and markup
- **C# Code Compare**: Compare .NET classes and methods
- **PHP Code Compare**: Compare PHP scripts and WordPress/Laravel code

#### Comparison Scenarios
- Code reviews and pull requests
- Version control diff checking
- Before/after refactoring validation
- Merge conflict resolution
- Bug fixing verification
- Learning from code examples
- Template comparison
- Configuration file changes
- Documentation updates
- API version differences

#### What Gets Compared
- Syntax differences
- Logic changes
- Variable modifications
- Function additions/deletions
- Class structure changes
- Import/dependency changes
- Comment updates
- Formatting differences
- Algorithm changes
- Performance optimizations

### 6. Code Formatter & Beautifier

Format and beautify code with proper indentation:

#### Formatting Features
- Automatic code indentation
- Proper spacing and line breaks
- Language-specific formatting rules
- Configurable formatting options
- Support for all 100+ languages
- Instant beautification

#### Common Formatter Use Cases
- **HTML Code Beautifier**: Format HTML markup with proper nesting
- **JavaScript Beautifier**: Format JS, TypeScript, React, Vue, Angular code
- **JSON Beautify**: Format JSON data with proper indentation
- **Python Code Beautifier**: Format Python following PEP 8 guidelines
- **Java Beautifier**: Format Java classes and methods
- **PHP Beautifier**: Format PHP scripts and frameworks
- **SQL Beautifier**: Format database queries with indentation
- **CSS Beautifier**: Format stylesheets with proper spacing
- **XML Beautifier**: Format XML with tag hierarchy

#### Formatter Scenarios
- Clean up minified production code
- Format messy or inconsistent code
- Standardize team code formatting
- Improve code readability
- Prepare code for reviews
- Learn code structure and patterns
- Format API responses (JSON, XML)
- Clean up generated code

#### What Gets Formatted
- Indentation (spaces or tabs)
- Line breaks and spacing
- Bracket and brace placement
- Operator spacing
- Statement alignment
- Comment formatting
- Import/export organization
- Code block structure

### 7. Code to PDF Export

Convert code to professional PDF documents:

#### PDF Export Features
- Professional formatting
- Monospace font for code
- Syntax highlighting preserved
- Automatic pagination
- Header with language and timestamp
- Footer with page numbers and branding
- Support for all 100+ languages
- Free for all logged-in users

#### Common PDF Export Uses
- **Python to PDF**: Export Python scripts and notebooks
- **HTML to PDF**: Convert HTML code for documentation
- **LaTeX to PDF**: Export LaTeX source code
- **Java to PDF**: Create PDF documentation of Java code
- **SQL to PDF**: Export database queries and schemas

#### Use Cases
- Code documentation
- Portfolio presentations
- Technical reports
- Educational materials
- Code sharing
- Archive storage
- Print-ready code
- Client deliverables

### 8. Text to PDF Converter

Convert plain text to professional PDF documents:

#### Text to PDF Features
- Professional formatting with clean fonts
- Customizable font size (8pt to 14pt)
- Optional line numbers
- Automatic pagination for long documents
- Header with timestamp and metadata
- Footer with page numbers
- Real-time character and line count
- Free for all logged-in users
- Client-side conversion (no server upload)

#### Common Text to PDF Uses
- **Notes to PDF**: Convert study notes and personal notes
- **Documents to PDF**: Transform text documents to PDF format
- **Essays to PDF**: Export essays and written assignments
- **TXT to PDF**: Convert .txt files to professional PDFs
- **Letters to PDF**: Create formatted letters and correspondence

#### Use Cases
- Student notes and essays
- Document archiving
- Professional correspondence
- Written reports
- Text file conversion
- Note taking and organization
- Print-ready documents
- Universal document sharing

### 9. JWT Decoder

Decode and parse JSON Web Tokens (JWT) instantly:

#### JWT Decoder Features
- Instant token decoding (real-time)
- Display header, payload, and signature
- Algorithm detection (HS256, RS256, ES256, etc.)
- Expiration status checking (expired/valid)
- Issued time (iat) and expiry time (exp) display
- 100% client-side processing (no server upload)
- Token validation and format checking
- Copy decoded JSON to clipboard
- Free unlimited use, no registration required

#### Common JWT Use Cases
- **Development & Debugging**: Inspect tokens during authentication development
- **API Testing**: Verify token claims and expiration before API calls
- **Security Auditing**: Check token structure, algorithm, and payload claims
- **Learning**: Understand JWT structure and token-based authentication
- **Token Analysis**: View user roles, permissions, and custom claims

#### What Gets Decoded
- **Header**: Algorithm (alg), token type (typ), key ID (kid)
- **Payload**: User claims, roles, permissions, issuer (iss), subject (sub), audience (aud)
- **Signature**: Raw signature string (Base64URL encoded)
- **Timestamps**: Issued at (iat), expiration (exp), not before (nbf)
- **Validation**: Token format validation and expiry checking

#### Use Cases
- Debug authentication issues in web apps
- Verify JWT tokens from Auth0, Firebase, AWS Cognito
- Check token expiration before making API calls
- Inspect user roles and permissions in tokens
- Learn JWT structure and claims
- Audit security implementations
- Parse tokens from OAuth/OIDC flows
- Analyze JWT from mobile apps

### 10. Unix Timestamp to Date Converter

Convert Unix timestamps to human-readable dates instantly:

#### Unix Timestamp Features
- Support for seconds (10 digits) and milliseconds (13 digits)
- Multiple date format outputs (ISO 8601, UTC, local time, date-only, time-only)
- Reverse conversion back to Unix timestamps
- Use current timestamp button for quick access
- Client-side processing (100% secure)
- Free unlimited use, no registration required

#### Common Unix Timestamp Use Cases
- **API Development**: Debug API responses that return Unix timestamps
- **Log Analysis**: Convert timestamps from server logs and application logs
- **Database Queries**: Convert stored Unix timestamps to readable dates
- **JavaScript Development**: Convert timestamps from Date objects and JSON responses

#### What Gets Converted
- **Input**: Unix timestamp in seconds or milliseconds
- **Output**: Multiple date formats including ISO 8601, UTC, local time, date-only, time-only, and reverse timestamps

#### Use Cases
- Debug REST API responses with Unix timestamps
- Analyze server logs and database timestamps
- Convert JavaScript Date.now() or Date.getTime() values
- Understand database timestamps in queries
- Parse timestamps from JSON responses
- Convert timestamps across different programming languages

### 11. Base64 to PDF Converter

Decode Base64 encoded PDF strings to downloadable PDF files:

#### Base64 to PDF Features
- Decode Base64 strings to PDF files instantly
- Support for data URLs (data:application/pdf;base64,...) and pure base64 strings
- PDF preview before download
- Upload PDF to get base64 representation
- Client-side processing (100% secure)
- Free unlimited use, no registration required

#### Common Base64 to PDF Use Cases
- **API Integration**: Decode Base64 PDFs from REST API responses
- **Database Storage**: Extract PDFs stored as Base64 in databases
- **Email Attachments**: Decode Base64 PDFs from email systems
- **Frontend Development**: Convert Base64 PDFs received in JavaScript applications

#### What Gets Decoded
- **Input**: Base64 encoded PDF string (with or without data URL prefix)
- **Output**: Downloadable PDF file with preview

#### Use Cases
- Decode PDFs from API JSON responses
- Extract PDFs from database text fields
- Decode PDFs from email attachments
- Convert Base64 PDFs from localStorage or API calls
- Process PDFs stored in NoSQL databases (MongoDB, Firebase)

### 12. PDF to Base64 Converter

Encode PDF files to Base64 strings for APIs, databases, and JSON payloads:

#### PDF to Base64 Features
- Upload PDF files or drag and drop
- Generate pure Base64 or data URL format
- Support for PDFs up to 10MB
- Copy Base64 string or data URL to clipboard
- Client-side processing (100% secure)
- Free unlimited use, no registration required

#### Common PDF to Base64 Use Cases
- **API Integration**: Encode PDFs for REST API requests
- **Database Storage**: Store PDFs as Base64 in text fields or JSON columns
- **Email Attachments**: Encode PDFs for email systems
- **JavaScript Applications**: Store PDFs in localStorage or send via fetch API

#### What Gets Encoded
- **Input**: PDF file (up to 10MB)
- **Output**: Base64 encoded string (pure base64 or data URL format)

#### Use Cases
- Send PDFs through REST APIs that require base64-encoded data
- Store PDFs in databases (MongoDB, Firebase) as text or JSON
- Encode PDFs for email attachments
- Store PDFs in browser localStorage for client-side applications
- Include PDFs in JSON configuration files
- Transmit PDFs through WebSocket connections

### 13. Data Format Converters

SwapCode provides 15 specialized data format converters for seamless data transformation:

#### YAML to JSON Converter
- Convert YAML configuration files to JSON format
- Preserves data structure, arrays, and nested objects
- Perfect for Kubernetes manifests, Docker Compose files, CI/CD configs
- Client-side processing for maximum security
- Free unlimited conversions

#### XML to JSON Converter
- Transform XML documents to JSON format
- Preserves attributes as @attributes objects
- Handles nested elements and repeated elements (converted to arrays)
- Supports namespaces and CDATA sections
- Perfect for API integration and legacy system migration

#### JSON to Dart Converter
- Generate Dart model classes from JSON
- Auto-creates fromJson factory constructors and toJson methods
- Type-safe code generation with proper Dart types
- Perfect for Flutter app development
- Production-ready code with best practices

#### JSON to Excel Converter
- Convert JSON arrays to Excel/CSV format
- Each object becomes a row, properties become columns
- Download as .xlsx or .csv files
- Perfect for data analysis and reporting
- Handles large datasets efficiently

#### JSON to YAML Converter
- Transform JSON to human-readable YAML format
- 2-space indentation (standard for Kubernetes, Docker)
- Perfect for configuration files
- Compatible with Kubernetes, Docker Compose, GitHub Actions
- Cleaner syntax than JSON for configs

#### JSON to PDF Converter
- Create professional PDF documents from JSON data
- Syntax highlighting and proper indentation
- Multi-page support for large JSON files
- Customizable formatting options
- Perfect for documentation and reports

#### Excel to JSON Converter
- Convert Excel/CSV files to JSON arrays
- First row becomes property names (keys)
- Handles multiple data types (text, numbers, dates, booleans)
- Empty cells become null values
- Perfect for data migration and API integration

#### JSON to HTML Table Converter
- Generate HTML table code from JSON arrays
- Each object becomes a table row
- Properties become table columns
- Customizable with CSS classes
- Works with React, Vue, Angular (adjustable for JSX)

#### JSON to TypeScript Converter
- Generate TypeScript interfaces from JSON
- Auto-infer types (string, number, boolean, arrays)
- Nested objects create nested interfaces
- Perfect for API response typing
- Type-safe development with IntelliSense support

#### Python Dict to JSON Converter
- Convert Python dictionary syntax to JSON
- Handles True/False/None → true/false/null conversion
- Single quotes → double quotes transformation
- Nested dict and list support
- Perfect for cross-language data sharing

#### PDF to JSON Converter
- Extract structured JSON data from PDF files
- Table extraction to JSON arrays
- Form field extraction
- Text content structuring
- Perfect for data migration and automation

#### JSON to XML Converter
- Transform JSON to valid XML documents
- JSON properties become XML elements
- Arrays create multiple elements with same name
- Special character escaping (<, >, &)
- Custom root element support

#### Text to JSON Converter
- Convert text files, CSV, and logs to JSON
- Line-by-line conversion to JSON arrays
- CSV detection and parsing
- Key-value pair recognition
- Log file parsing with field extraction

#### PHP Array to JSON Converter
- Convert PHP array syntax to JSON format
- Handles both array() and [] notation
- Associative array (=>) to JSON object conversion
- Single/double quote normalization
- Perfect for Laravel, Symfony data transformation

#### String to JSON Converter
- Parse and format JSON strings
- Proper escaping of special characters
- Multi-line string support with \n sequences
- JSON validation and error detection
- Perfect for API testing and debugging

All data converters feature:
- 100% client-side processing (secure, no data upload)
- Instant conversion with real-time processing
- Copy to clipboard functionality
- Download converted files
- Syntax validation and error reporting
- Free unlimited use, no registration required
- Mobile-friendly responsive design

### 25. Code Optimizer

Optimize code for better performance and efficiency:

#### Optimization Features
- Algorithm complexity reduction (O(n²) → O(n log n))
- Database query optimization
- Memory usage improvement
- Loop optimization
- Caching strategy implementation
- Lazy loading suggestions
- Resource pooling
- Bundle size reduction

#### Use Cases
- Improve application performance
- Reduce server costs
- Optimize database queries
- Improve mobile app responsiveness
- Reduce memory consumption
- Optimize API response times

### 9. Code Comment Generator

Automatically add meaningful comments to your code:

#### Comment Generation Features
- Function/method documentation
- Parameter descriptions
- Return value explanations
- Complex logic clarification
- TODO markers for improvements
- Code example comments
- JSDoc, Docstring, JavaDoc formats

#### Use Cases
- Document legacy code
- Improve team collaboration
- Generate API documentation
- Code review preparation
- Educational code examples
- Maintainability improvement

### 10. Code Improver

Improve code quality with modern best practices:

#### Improvement Features
- Modernize syntax (ES6+, Python 3.10+)
- Apply language-specific best practices
- Improve naming conventions
- Refactor complex logic
- Add error handling
- Remove code duplication
- Optimize data structures
- Improve readability

#### Use Cases
- Modernize legacy code
- Prepare code for production
- Apply best practices
- Improve maintainability
- Code quality enhancement
- Technical debt reduction

### 11. Test Code Generator

Generate comprehensive unit tests automatically:

#### Test Generation Features
- Unit test creation (Jest, PyTest, JUnit, etc.)
- Test case coverage (positive, negative, edge cases)
- Mock and stub generation
- Assertion generation
- Test fixture creation
- Integration test templates
- Property-based tests
- Test documentation

#### Supported Testing Frameworks
- **JavaScript**: Jest, Mocha, Jasmine, Vitest
- **Python**: PyTest, unittest, nose2
- **Java**: JUnit, TestNG, Mockito
- **C#**: NUnit, xUnit, MSTest
- **Go**: testing package, Testify
- **Ruby**: RSpec, Minitest

#### Use Cases
- Improve test coverage
- Save time writing tests
- Learn testing best practices
- Generate edge case tests
- Create test skeletons
- TDD/BDD development

### 12. Code Review

Get AI-powered code review with comprehensive analysis:

#### Code Review Features
- Security vulnerability detection (SQL injection, XSS, CSRF)
- Performance bottleneck identification
- Best practice violations
- Code smell detection
- Error handling analysis
- Code complexity metrics
- Maintainability assessment
- Detailed feedback with line numbers

#### Review Categories
- **Security**: Authentication, authorization, input validation
- **Performance**: Algorithm efficiency, database queries, caching
- **Quality**: Naming, structure, documentation, testing
- **Maintainability**: DRY, SOLID, design patterns

#### Use Cases
- Pre-commit code review
- Pull request analysis
- Learning code best practices
- Security audit preparation
- Code quality improvement
- Technical debt assessment

### 13. Code Refactoring

Restructure code applying SOLID principles and design patterns:

#### Refactoring Features
- Extract Method/Class
- Rename variables/functions
- Simplify conditionals
- Remove code duplication (DRY)
- Apply design patterns (Strategy, Factory, Observer, etc.)
- Improve separation of concerns
- Optimize data structures
- Enhance error handling

#### Refactoring Types
- **Method Extraction**: Break down large functions
- **Class Extraction**: Improve separation of concerns
- **Variable Renaming**: Improve code clarity
- **Conditional Simplification**: Reduce complexity
- **Pattern Implementation**: Apply Gang of Four patterns
- **Dependency Injection**: Improve testability

#### Use Cases
- Clean up legacy code
- Improve code architecture
- Prepare for feature additions
- Reduce technical debt
- Improve testability
- Enhance maintainability

### 14. Code Quality Analyzer

Analyze code quality, detect smells, and get improvement suggestions:

#### Analysis Features
- Code smell detection (Long Method, Large Class, etc.)
- Complexity metrics (Cyclomatic, Cognitive)
- Maintainability index
- Code duplication analysis
- Naming convention checks
- Documentation coverage
- Test coverage gaps
- Dependency analysis

#### Quality Metrics
- Lines of code (LOC)
- Cyclomatic complexity
- Cognitive complexity
- Maintainability index
- Technical debt estimation
- Code duplication percentage

#### Use Cases
- Assess codebase health
- Identify refactoring targets
- Track quality over time
- Onboarding code evaluation
- Technical debt management
- Code review preparation

## Features

### Trial Plan (Free)
- Limited attempts per day
- Advanced AI models (GPT-4, Claude)
- Up to 20,000 characters per request
- Access to all 14+ tools
- Support for 100+ languages
- Priority chat support
- Regular updates & new features
- No credit card required

### Monthly Plan ($5/month)
- Unlimited uses
- Advanced AI models (GPT-4, Claude)
- Up to 20,000 characters per request
- Priority processing
- Access to all 14+ tools
- Support for 100+ languages
- Priority chat support
- Cancel anytime

### Pro Tier (Lifetime - $50)
- One-time payment, lifetime access
- Unlimited uses
- Advanced AI models (GPT-4, Claude)
- Up to 20,000 characters per request
- Priority processing
- Access to all 14+ tools
- Support for 100+ languages
- Priority chat support
- 30-day money-back guarantee

## Technical Specifications

### Input Formats
- Plain text code
- Natural language descriptions
- Code snippets
- Full file contents
- Multiple files (concatenated)

### Output Formats
- Formatted code with syntax highlighting
- Inline comments and explanations
- Error descriptions and fixes
- Best practice recommendations
- Performance optimization suggestions

### Security
- No code storage on servers
- Real-time processing only
- Encrypted data transmission (HTTPS)
- No training on user code
- GDPR compliant
- SOC 2 Type II compliant

### API Endpoints
- POST /api/v1/generate - Generate code from description
- POST /api/v1/convert - Convert code between languages
- POST /api/v1/debug - Debug and fix code issues
- POST /api/v1/explain - Explain code functionality
- POST /api/v1/format - Format and beautify code
- POST /api/v1/optimize - Optimize code for performance
- POST /api/v1/add-comments - Add meaningful comments
- POST /api/v1/improve - Improve code quality
- POST /api/v1/test - Generate unit tests
- POST /api/v1/review - Get code review feedback
- POST /api/v1/refactor - Refactor code structure
- POST /api/v1/quality - Analyze code quality

## Converter & Utility Tools Details

### Morse Code Text Translator
Convert text to morse code and morse code to text instantly.

**Features:**
- Bidirectional conversion (text ↔ morse code)
- Audio playback of morse code signals
- Complete International Morse Code chart
- Support for letters, numbers, and punctuation
- Real-time conversion

**Use Cases:**
- Learning morse code for amateur radio
- Aviation communication practice
- Assistive technology for accessibility
- Emergency signaling education
- Historical communication study

**URL:** https://swapcode.ai/morse-code-text-translator

### HEX to CMYK Converter
Convert HEX color codes to CMYK values for print design.

**Features:**
- Convert HEX to CMYK color values
- Live color preview with swatch
- RGB values displayed alongside
- Color picker for visual selection
- Copy to clipboard functionality
- Accurate print color conversion

**Use Cases:**
- Preparing digital designs for print
- Brand color consistency across media
- Print production file preparation
- Graphic design workflows
- Marketing material creation

**URL:** https://swapcode.ai/hex-to-cmyk-converter

### PMS to HEX Converter
Convert Pantone PMS colors to HEX, RGB, and CMYK.

**Features:**
- Search 27+ popular Pantone colors
- Convert PMS to HEX, RGB, and CMYK
- Visual color preview and swatches
- Popular color quick-access grid
- Auto-suggestions for similar colors
- Industry-standard conversions

**Use Cases:**
- Brand guideline implementation
- Digital adaptation of print brands
- Website design with brand colors
- App development color matching
- Marketing campaign consistency

**URL:** https://swapcode.ai/pms-to-hex-converter

### Binary to Gray Code Converter
Convert between binary and Gray code for digital systems.

**Features:**
- Bidirectional conversion (binary ↔ Gray code)
- Step-by-step conversion visualization
- Decimal value calculations
- Quick reference table (0-15)
- Educational explanations
- Up to 32-bit support

**Use Cases:**
- Digital electronics design
- Rotary encoder programming
- K-map (Karnaugh map) simplification
- Error correction systems
- Position tracking systems
- Educational purposes

**URL:** https://swapcode.ai/binary-to-gray-code-converter

### Code to Word Converter (NATO Phonetic Alphabet)
Convert text to NATO phonetic alphabet for clear communication.

**Features:**
- Text to NATO phonetic conversion
- Character-by-character breakdown
- Complete A-Z and 0-9 chart
- Pronunciation guides included
- Instant conversion
- Copy functionality

**Use Cases:**
- Aviation communication
- Military radio operations
- Emergency services dispatch
- Customer service (spelling names, codes)
- Amateur radio communications
- Clear verbal communication

**URL:** https://swapcode.ai/code-to-word-converter

### Expiration Date Code Converter
Decode product expiration date codes and Julian dates.

**Features:**
- Support for 6 date formats
- Julian date decoding (YYDDD, YYYYDDD)
- Standard formats (MMDDYY, DDMMYY, YYMMDD, YYYYMMDD)
- Calculate days ago/until
- Week of year and day of week
- Industry-specific guidance

**Supported Formats:**
- Julian dates (5-digit and 7-digit)
- MMDDYY (North American format)
- DDMMYY (European format)
- YYMMDD (sortable format)
- YYYYMMDD (ISO standard)

**Use Cases:**
- Decoding food expiration dates
- Cosmetics manufacturing date identification
- Pharmaceutical expiration tracking
- Automotive part date codes
- Battery manufacturing dates
- Product freshness verification

**URL:** https://swapcode.ai/expiration-date-code-converter

## AI Generator Tools Details

### AI Rap Lyrics Generator
Generate original rap lyrics with AI for multiple styles and themes.

**Features:**
- Multiple rap styles (Trap, Boom Bap, Drill, Old School, Melodic, Conscious, Battle, Freestyle)
- Customizable themes and topics
- Mood/vibe selection (Aggressive, Confident, Chill, Emotional, Party, Introspective)
- Rhyme scheme options (AABB, ABAB, AAAA, Free Style)
- Wordplay complexity levels (Simple, Medium, Complex)
- Variable length (8, 16, 24, 32 bars)

**Use Cases:**
- Songwriting inspiration and starter bars
- Overcoming writer's block
- Learning rap structure and flow
- Practice material for rappers
- Educational purposes for hip-hop studies
- Creative writing exercises

**URL:** https://swapcode.ai/ai-rap-lyrics-generator

### AI Reply Generator
Generate smart, contextual replies for emails, messages, and comments.

**Features:**
- Multiple tone options (Professional, Friendly, Casual, Formal, Enthusiastic, Apologetic)
- Reply length customization (Short, Medium, Long)
- Purpose-based templates (Answer Question, Acknowledge, Decline, Thank, Follow Up)
- Context-aware responses
- Copy to clipboard functionality
- Real-time generation

**Use Cases:**
- Customer support responses
- Email management and replies
- Social media comment responses
- Professional correspondence
- LinkedIn messaging
- Business communication

**URL:** https://swapcode.ai/ai-reply-generator

### Instagram Username Generator
Create unique, creative Instagram usernames with AI.

**Features:**
- Multiple style options (Aesthetic, Professional, Funny, Cool, Cute, Creative)
- Interest/niche customization
- Name and keyword-based generation
- Bulk generation (5-20 usernames at once)
- Copy username to clipboard
- Instant availability checking tips

**Use Cases:**
- New Instagram account creation
- Personal brand rebranding
- Business account naming
- Influencer profile setup
- Content creator identity
- Username inspiration

### AI Bio Generator
Generate professional and creative bios for social media and profiles.

**Features:**
- Platform-specific optimization (Instagram, Twitter, LinkedIn, TikTok, Website)
- Multiple style options (Professional, Creative, Funny, Inspirational, Minimalist)
- Customizable profession and interests
- Character limit awareness per platform
- Emoji inclusion options
- Multiple bio variations generated

**Use Cases:**
- Social media profile optimization
- LinkedIn professional summaries
- Twitter/X bio creation
- Instagram profile descriptions
- TikTok bio writing
- Author and speaker bios
- Personal website about sections

**URL:** https://swapcode.ai/ai-bio-generator

### AI Review Generator
Create authentic product and service reviews for multiple platforms.

**Features:**
- Star rating selection (1-5 stars)
- Tone customization (Professional, Casual, Enthusiastic, Balanced, Critical)
- Review length options (Short, Medium, Long)
- Platform-specific formatting (Amazon, Google, Yelp, TripAdvisor, General)
- Key points integration
- Copy to clipboard

**Use Cases:**
- Product review writing assistance
- Customer feedback articulation
- Service review creation
- Restaurant reviews
- Hotel and travel reviews
- App and software reviews
- E-commerce product reviews

**Important:** Only for genuine experiences. Tool helps articulate, not fabricate reviews.

### AI Love Letter Generator
Generate heartfelt, romantic letters for any occasion with AI.

**Features:**
- Multiple styles (Romantic, Sweet & Tender, Passionate, Poetic, Casual, Apology)
- Occasion-specific (Just Because, Anniversary, Valentine's Day, Birthday, Long Distance)
- Personalization with names and memories
- Length options (Short & Sweet, Medium, Long & Detailed)
- Closing style customization
- Special memory integration

**Use Cases:**
- Anniversary letters and cards
- Valentine's Day messages
- Apology and reconciliation letters
- Long-distance relationship correspondence
- Birthday romantic messages
- Proposal letters
- Just-because love notes

**URL:** https://swapcode.ai/ai-love-letter-generator

### AI Worksheet Generator
Generate custom educational worksheets for teachers and students.

**Features:**
- Multiple subjects (Math, English/Language Arts, Science, Social Studies, Vocabulary, Grammar)
- Grade level customization (K-2, 3-5, 6-8, 9-12)
- Worksheet types (Practice Problems, Quiz/Assessment, Review Sheet, Homework, Warm-up)
- Question count options (5, 10, 15, 20 questions)
- Difficulty levels (Easy, Medium, Hard, Mixed)
- Optional answer key generation
- Print-ready formatting

**Supported Subjects:**
- **Math**: Arithmetic, algebra, geometry, word problems
- **English**: Grammar, vocabulary, reading comprehension, writing
- **Science**: Biology, chemistry, physics, earth science
- **Social Studies**: History, geography, civics

**Use Cases:**
- Classroom teaching materials
- Homework assignments
- Test preparation
- Homeschooling resources
- Tutoring materials
- Practice worksheets
- Assessment creation

**URL:** https://swapcode.ai/ai-worksheet-generator

## Prompt Generator Tools Details

### Writing Prompt Generator
Generate creative writing prompts for overcoming writer's block and finding inspiration.

**Features:**
- Keyword-based prompt generation
- Support for all fiction genres (fantasy, sci-fi, mystery, romance, thriller, horror)
- Story starters and plot ideas
- Character-driven scenarios
- Unlimited prompt variations
- Daily writing practice prompts

**Use Cases:**
- Overcome writer's block
- Daily writing practice
- Creative writing assignments
- Novel and short story ideas
- Fiction contests and challenges
- Writing group exercises
- NaNoWriMo preparation

**URL:** https://swapcode.ai/writing-prompt-generator

### Art Prompt Generator
Create detailed art prompts for AI image generators and artistic inspiration.

**Features:**
- Detailed prompt generation for AI art tools
- Multiple art styles (photorealistic, abstract, impressionist, surreal)
- Composition and lighting details
- Color palette suggestions
- Mood and atmosphere specifications
- Technical quality modifiers

**Supported AI Tools:**
- Midjourney (all versions)
- Stable Diffusion
- DALL-E and DALL-E 3
- Leonardo AI
- Adobe Firefly

**Use Cases:**
- AI art generation
- Digital art inspiration
- Concept art creation
- Character design
- Environment art
- Style exploration
- Professional art projects

**URL:** https://swapcode.ai/art-prompt-generator

### Drawing Prompt Generator
Generate drawing prompts for daily practice and skill development.

**Features:**
- Daily drawing challenges
- Subject matter variety (portraits, landscapes, still life, characters)
- Skill-focused prompts (anatomy, perspective, shading, composition)
- Difficulty levels
- Time-based challenges
- Mixed media suggestions

**Use Cases:**
- Daily art practice
- Sketchbook filling
- Art improvement challenges
- Teaching assignments
- Portfolio development
- Creative warm-ups
- Art community challenges

**URL:** https://swapcode.ai/drawing-prompt-generator

### AI Image Prompt Generator
Craft professional-quality prompts for AI image generation with proper syntax and modifiers.

**Features:**
- Platform-specific optimization (Midjourney, Stable Diffusion, DALL-E 3)
- Quality tags and parameters
- Aspect ratio suggestions
- Negative prompts (Stable Diffusion)
- Style modifiers and weights
- Camera and lighting terms
- Technical specifications

**Advanced Features:**
- Midjourney parameters (--ar, --v, --quality, --stylize)
- Stable Diffusion sampling methods
- DALL-E 3 natural language optimization
- Professional photography terms
- Artistic style references
- Composition guidelines

**Use Cases:**
- Professional AI art generation
- Marketing and advertising visuals
- Social media content
- Product visualization
- Concept art for projects
- Book covers and illustrations
- NFT art creation

**URL:** https://swapcode.ai/ai-image-prompt-generator

### Story Prompt Generator
Generate engaging story prompts and plot ideas for novels and short fiction.

**Features:**
- Complete plot scenarios
- Character-driven story ideas
- Conflict and tension elements
- Genre-specific prompts (mystery, romance, sci-fi, fantasy, thriller)
- Narrative hooks and opening lines
- Plot twist suggestions
- Multi-genre crossover ideas

**Use Cases:**
- Novel writing
- Short story creation
- Creative fiction assignments
- Story contests
- Anthology submissions
- Plot brainstorming
- Series planning

**URL:** https://swapcode.ai/story-prompt-generator

### AI Prompt Generator
Universal AI prompt generator for any AI tool including ChatGPT, Claude, Gemini, and image generators.

**Features:**
- Multi-purpose prompt creation
- Language model optimization (ChatGPT, Claude, Gemini, Bard)
- Image generation prompts
- Task-specific prompt templates
- Context and role-playing instructions
- Output format specifications
- Best practices guidance

**Supported AI Tools:**
- ChatGPT (GPT-3.5, GPT-4)
- Claude (all versions)
- Google Gemini
- Microsoft Copilot
- Midjourney, DALL-E, Stable Diffusion
- Specialized AI tools

**Use Cases:**
- Content creation prompts
- Code generation instructions
- Analysis and research queries
- Creative writing assistance
- Data processing tasks
- Problem-solving prompts
- Educational prompts

**URL:** https://swapcode.ai/ai-prompt-generator

### ChatGPT Prompt Generator
Create effective prompts specifically optimized for ChatGPT conversations.

**Features:**
- ChatGPT-specific optimization
- Prompt engineering best practices
- Role and persona instructions
- Context setting techniques
- Output format specifications
- Few-shot learning examples
- Chain-of-thought prompting

**Prompt Categories:**
- Content creation (blogs, social media, marketing copy)
- Code generation and debugging
- Analysis and research
- Creative writing
- Business and professional
- Educational and tutoring
- Problem-solving

**Use Cases:**
- Blog post generation
- Social media content
- Marketing copy
- Code assistance
- Research and analysis
- Learning and education
- Business communications


### Character Prompt Generator
Generate detailed character profiles for stories, games, and creative projects.

**Features:**
- Complete character backgrounds
- Personality traits and quirks
- Physical appearance details
- Motivations and goals
- Strengths and weaknesses
- Character relationships
- Backstory elements
- Character arcs

**Character Elements:**
- Demographics (age, gender, occupation)
- Physical description
- Personality traits (MBTI, enneagram)
- Skills and abilities
- Fears and desires
- Character flaws
- Moral alignment
- Speech patterns

**Use Cases:**
- Story character creation
- RPG character development
- D&D character sheets
- Original character (OC) design
- Character art references
- Roleplaying scenarios
- Novel character planning

**URL:** https://swapcode.ai/character-prompt-generator

### Fanfic Prompt Generator
Generate creative fanfiction prompts with AU scenarios and shipping dynamics.

**Features:**
- Alternate universe (AU) scenarios
- Shipping prompts for OTP (one true pairing)
- Crossover ideas
- Canon divergence scenarios
- Trope-based prompts (enemies to lovers, slow burn, fake dating)
- Character dynamics
- Plot bunny ideas

**Popular AU Types:**
- Coffee shop AU
- College/University AU
- Soulmate AU
- Royalty AU
- Modern AU
- Fantasy AU
- Time travel AU

**Use Cases:**
- Fanfiction writing
- OTP scenarios
- Archive of Our Own (AO3) submissions
- Fanfiction.net stories
- Shipping content
- Fandom creativity
- Character exploration

**URL:** https://swapcode.ai/fanfic-prompt-generator

### Couple Prompt Generator
Generate romantic couple prompts for OTP scenarios and relationship storylines.

**Features:**
- Romance tropes (enemies to lovers, fake dating, forced proximity)
- Relationship dynamics
- Meet-cute scenarios
- First date ideas
- Confession scenes
- Relationship milestones
- Conflict and resolution

**Romance Tropes:**
- Enemies to lovers
- Friends to lovers
- Fake dating/marriage
- Second chance romance
- Forced proximity
- Opposites attract
- Slow burn
- Love triangle

**Use Cases:**
- Romance writing
- OTP fanfiction
- Relationship stories
- Romance novels
- Creative writing prompts
- Character relationship development
- Romantic scenes

**URL:** https://swapcode.ai/couple-prompt-generator

### Poetry Prompt Generator
Inspire poetic creativity with prompts for all forms of poetry.

**Features:**
- Form-specific prompts (haiku, sonnet, villanelle, free verse)
- Thematic inspiration (love, nature, society, identity, mortality)
- Imagery and metaphor suggestions
- Emotional themes
- Structural guidance
- Poetic devices

**Poetry Forms:**
- Haiku (5-7-5)
- Sonnets (Shakespearean, Petrarchan)
- Villanelles
- Free verse
- Acrostic poems
- Limerick
- Spoken word

**Themes:**
- Love and relationships
- Nature and seasons
- Social justice
- Identity and self-discovery
- Loss and grief
- Joy and celebration
- Existential questions

**Use Cases:**
- Poetry writing practice
- Creative writing assignments
- Poetry contests
- Spoken word performances
- Personal expression
- Academic poetry courses
- Literary magazines

**URL:** https://swapcode.ai/poetry-prompt-generator

### Random Zip Code Generator
Generate random valid US zip codes with complete location information.

**Features:**
- Generate 1-50 random zip codes at once
- Filter by region (Northeast, Southeast, Midwest, Southwest, West)
- Filter by specific states (California, Texas, New York, Florida)
- Real, valid US postal codes
- Complete information (zip code, city, state, region)
- Bulk copy functionality
- Individual copy for each zip code

**Use Cases:**
- Software testing and QA
- Form validation testing
- Database seeding and sample data
- E-commerce shipping calculator testing
- Address validation testing
- Development and staging environments
- Educational projects and datasets
- Location-based feature testing

**URL:** https://swapcode.ai/random-zip-code-generator

### UPI QR Code Generator
Generate UPI payment QR codes for Indian digital payments.

**Features:**
- Compatible with all UPI apps (Google Pay, PhonePe, Paytm, BHIM, Amazon Pay, WhatsApp Pay)
- Optional fixed amount or flexible payment
- Payee name customization
- Transaction note/description
- Customizable QR code size (200x200 to 500x500)
- Customizable QR code color
- Download as PNG image
- Copy UPI payment string
- Client-side generation (no server upload)

**Required Information:**
- UPI ID (VPA) - e.g., yourname@paytm, 9876543210@ybl
- Optional: Payee name, amount, transaction note

**Use Cases:**
- Small business payments and billing
- Freelancer invoicing and payments
- Restaurant and retail contactless payments
- Event ticketing and registration
- Donations and fundraising campaigns
- Service providers and consultants
- Street vendors and kiosks
- Online stores and marketplaces
- Personal money requests
- Bill splitting and group payments

**Supported UPI Apps:**
- Google Pay (GPay)
- PhonePe
- Paytm
- Amazon Pay
- BHIM (Bharat Interface for Money)
- WhatsApp Pay
- Mobikwik
- Freecharge
- All NPCI-compliant UPI apps

## Common Patterns & Templates

### Authentication Patterns
- JWT authentication
- OAuth 2.0 integration
- Session-based authentication
- API key authentication
- Multi-factor authentication
- Password reset flows
- Email verification
- Social login integration

### API Design Patterns
- RESTful API design
- GraphQL schema design
- WebSocket implementations
- Server-sent events
- Pagination strategies
- Filtering and sorting
- Rate limiting
- API versioning
- HATEOAS implementation

### Database Patterns
- Repository pattern
- Active Record pattern
- Data Mapper pattern
- Unit of Work pattern
- Identity Map pattern
- Lazy Loading
- Eager Loading
- Database sharding
- Read replicas
- Connection pooling

### Frontend Patterns
- Component composition
- Higher-order components
- Render props
- Custom hooks
- State management (Redux, MobX, Zustand)
- Form handling
- Error boundaries
- Code splitting
- Lazy loading
- Server-side rendering
- Static site generation

### Backend Patterns
- MVC architecture
- Microservices architecture
- Event-driven architecture
- CQRS pattern
- Saga pattern
- Circuit breaker pattern
- Retry pattern
- Bulkhead pattern
- API Gateway pattern
- Service mesh

### Testing Patterns
- Arrange-Act-Assert (AAA)
- Given-When-Then (BDD)
- Test fixtures
- Test doubles (mocks, stubs, spies)
- Integration testing strategies
- End-to-end testing strategies
- Snapshot testing
- Property-based testing
- Mutation testing

## Best Practices

### Code Quality
- Follow language-specific style guides
- Use meaningful variable names
- Write self-documenting code
- Add comments for complex logic
- Keep functions small and focused
- Follow DRY (Don't Repeat Yourself)
- Follow SOLID principles
- Use design patterns appropriately
- Handle errors gracefully
- Write testable code

### Performance
- Optimize algorithms and data structures
- Minimize database queries
- Use caching strategically
- Implement lazy loading
- Optimize bundle sizes
- Use CDNs for static assets
- Implement pagination
- Use database indexes
- Profile and monitor performance
- Optimize images and media

### Security
- Validate and sanitize all inputs
- Use parameterized queries
- Implement proper authentication
- Use HTTPS everywhere
- Store passwords securely (bcrypt, argon2)
- Implement rate limiting
- Use security headers
- Keep dependencies updated
- Follow principle of least privilege
- Implement proper logging

### Maintainability
- Write clear documentation
- Use version control effectively
- Implement CI/CD pipelines
- Write comprehensive tests
- Use linting and formatting tools
- Follow consistent coding standards
- Refactor regularly
- Monitor and log errors
- Use dependency injection
- Keep dependencies updated

## Integration Examples

### Version Control
- Git workflows
- GitHub Actions
- GitLab CI
- Bitbucket Pipelines
- Pre-commit hooks
- Commit message conventions

### Cloud Platforms
- AWS (Lambda, EC2, S3, RDS, DynamoDB)
- Google Cloud (Cloud Functions, Compute Engine, Cloud Storage)
- Azure (Functions, VMs, Blob Storage)
- Heroku
- Vercel
- Netlify
- DigitalOcean
- Railway

### Databases
- PostgreSQL
- MySQL
- MongoDB
- Redis
- Elasticsearch
- Cassandra
- DynamoDB
- Firebase
- Supabase
- PlanetScale

### Monitoring & Logging
- Sentry
- LogRocket
- Datadog
- New Relic
- Prometheus
- Grafana
- ELK Stack
- CloudWatch
- Application Insights

## Recent Updates (November 2024)

### UI/UX Improvements

#### Theme System
- **Light Theme Only**: Site now uses only light theme across all pages
- **Simplified UI**: Removed dark theme toggle from header and mobile menu for cleaner interface
- **Consistent Experience**: All users see the same professional light theme

#### Authentication & User Experience
- **Smart Redirects**: Users are redirected to their original page after login (instead of defaulting to playground)
- **Modern Sign-In**: Redesigned sign-in button with flat, modern design in header
- **Enhanced Profile**: Larger, more modern profile icon with gradient backgrounds and better spacing
- **Improved Dropdowns**: Modernized sign-in and profile dropdowns with better styling and visual hierarchy

#### Navigation Improvements
- **Simplified Header**: Cleaned up header links to show only important navigation (Code Tools, Data Tools, All Tools, Pricing)
- **Removed Clutter**: Eliminated multiple dropdown menus for better SEO and UX
- **All Tools Link**: Added smooth-scrolling link to footer tools section
- **Mobile Optimized**: Improved mobile menu structure and navigation

#### AI Coder Online Page
- **New URL**: Playground moved from `/playground` to `/ai-coder-online` with 301 redirect
- **SEO Optimized**: Page optimized for "ai coder online" keyword
- **Complete Redesign**: Comprehensive tool index with detailed descriptions
- **Structured Data**: Enhanced schema.org markup with aggregate ratings
- **Optimized Spacing**: Reduced whitespace for better content density
- **Icon-Based Design**: Replaced emojis with professional SVG icons

#### CodeTool Enhancements
- **Collapsible Sidebar**: Added toggle button to collapse/expand tool sidebar
- **Responsive Design**: Sidebar automatically collapses on mobile for space optimization
- **Icon-Only Mode**: Shows tool icons with tooltips when collapsed
- **Smart Tool Suggestions**: Quick action panel suggests next logical tools after operations
- **Tool Usage Tracking**: Tracks tool usage patterns in localStorage for personalized suggestions
- **New Tool Badges**: Subtle "New" badges on untried tools to encourage exploration
- **Dismissible Suggestions**: Close button (X) to dismiss quick action panel
- **Seamless Tool Switching**: Output automatically clears when switching via recommendations
- **Auto-Input Copy**: Previous output becomes input for suggested next tool

#### Crisp Chat Integration
- **Enhanced Context**: Chat widget now includes comprehensive page context
- **User Segmentation**: Automatic segmentation based on login status, tier, and current page
- **Page Details**: Sends URL, title, referrer, viewport size, language, and platform info
- **Tool Context**: Includes current tool information when chatting from CodeTool
- **Better Support**: Support team gets full context for more efficient help

#### Social Proof Removal
- **Cleaner UI**: Removed social proof notification system
- **Reduced Distractions**: Eliminated pop-up notifications for better focus

### Technical Improvements

#### Page Redirects
- All internal links updated from `/playground` to `/ai-coder-online`
- 301 redirect implemented for SEO preservation
- Updated links across: homepage, pricing, alternatives, 404, profile pages

#### User Engagement Features
- **Tool Usage Analytics**: Client-side tracking of tool usage frequency and sequences
- **Personalized Suggestions**: Context-aware tool recommendations based on current tool
- **Tool Switching Patterns**: Tracks which tools users switch between for better UX
- **First-Time Use Tracking**: Identifies and highlights untried tools
- **Non-Intrusive Design**: Subtle badges and dismissible suggestions

#### LocalStorage Structure
```javascript
// Tool Usage Tracking
swapcode_tool_usage: {
  tools: { generate: 5, debug: 3, ... },  // Usage counts
  sequence: ['generate', 'debug', ...],    // Last 20 tools used
  firstUsed: { generate: 1234567890 }      // Timestamps
}

// Tool Switching Patterns
swapcode_tool_switches: {
  'generate->debug': 10,
  'debug->optimize': 5,
  ...
}

// Existing Auth & Settings
isLoggedIn: 'true'
userEmail: 'user@example.com'
userName: 'John Doe'
avatarUrl: 'https://...'
userTier: 'Pro'
redirectAfterLogin: '/page-url'
```

#### Crisp Session Data
- user_tier: User's subscription tier
- is_paid_user: Yes/No indicator
- logged_in: Authentication status
- page_url: Current page URL
- page_path: URL pathname
- page_title: Document title
- referrer: Referring URL
- screen_size: User's screen dimensions
- viewport_size: Browser viewport size
- language: Browser language
- platform: Operating system
- initiated_at: Chat initiation timestamp
- current_tool: Active tool (if applicable)

### Design Philosophy
- **Minimalism**: Clean, distraction-free interface
- **User-Centric**: Features designed based on actual user workflows
- **Performance**: Client-side processing where possible
- **Privacy**: No unnecessary data collection
- **Accessibility**: Modern, spacious, easy-to-use interface

## Support

- Website: https://swapcode.ai
- Live Chat: Available via chat widget on the website (priority support for paid users)
- Documentation: https://swapcode.ai/docs
- AI Coder Online: https://swapcode.ai/ai-coder-online (formerly /playground)
- Pricing: https://swapcode.ai/pricing

## License

All code generated by SwapCode is yours to use without restrictions.
No attribution required. Suitable for personal and commercial use.

---

Last Updated: November 2024
Version: 2.1.0
Platform: Swapcode.ai - 14+ AI-Powered Code Tools

## Recent Changes Summary

**Version 2.1.0 (November 2024)**:
- Light theme only implementation
- Smart tool suggestions with quick actions
- Collapsible responsive sidebar
- Enhanced Crisp chat integration with full context
- Tool usage tracking and analytics
- "New" badges for untried tools
- Playground → AI Coder Online migration
- Improved authentication flow with smart redirects
- Simplified navigation and header
- Social proof removal for cleaner UI

For detailed changes, see CHANGELOG-NOV-2024.md

## New Generator & Utility Tools (November 2024)

### Phone Number Generator
Generate random phone numbers for testing and development with multiple country formats.

**Features:**
- Support for 10+ country formats (US, UK, India, Canada, Australia, Germany, France, Japan, Brazil, Mexico)
- Bulk generation (1-100 phone numbers at once)
- Proper phone number formatting per country
- Copy individual or all phone numbers
- Free with no registration

**Use Cases:**
- Software testing and form validation
- Database seeding with test data
- UI mockups and design prototypes
- Development and staging environments

**URL:** https://swapcode.ai/phone-number-generator

### Incorrect Quotes Generator
Generate hilarious incorrect quotes and misattributed dialogues with AI.

**Features:**
- AI-powered quote generation
- Custom character selection
- Perfect for fan communities and memes
- Unlimited quote generation
- Sign-in required (free)

**Use Cases:**
- Fan fiction and fandom content
- Meme creation for social media
- Creative writing prompts
- Discord and Tumblr posts

**URL:** https://swapcode.ai/incorrect-quotes-generator

### Alphabetical Order Sorter
Sort text lines in alphabetical order with flexible options.

**Features:**
- Sort ascending (A-Z) or descending (Z-A)
- Case-sensitive and case-insensitive sorting
- Remove duplicate lines option
- Handle thousands of lines instantly
- No character limits

**Use Cases:**
- Name lists and directories
- Bibliography and references
- Data organization
- Content management

**URL:** https://swapcode.ai/alphabetical-order-sorter

### D&D Name Generator
Generate unique fantasy character names for Dungeons & Dragons with AI.

**Features:**
- AI-powered name generation
- Support for all D&D races (elves, dwarves, orcs, tieflings, dragonborn, etc.)
- Custom race and background options
- Perfect for player characters and NPCs
- Sign-in required (free)

**Use Cases:**
- D&D character creation
- NPC and villain names
- Fantasy world building
- Creative writing projects

**URL:** https://swapcode.ai/dnd-name-generator

### Text Repeater
Repeat text, words, or phrases multiple times with custom separators.

**Features:**
- Repeat text up to 10,000 times
- Multiple separator options (newline, space, comma, custom)
- Instant text repetition
- No character limits
- Free with no registration

**Use Cases:**
- Software testing and test data
- Data generation and patterns
- Content creation
- Form filling

**URL:** https://swapcode.ai/text-repeater

### Lower to Upper Case Converter
Convert lowercase text to uppercase instantly with bidirectional conversion.

**Features:**
- Convert lowercase to UPPERCASE
- Reverse conversion (uppercase to lowercase)
- Preserve numbers and punctuation
- No character limits
- Free with no registration

**Use Cases:**
- Document formatting
- Code and programming
- Data processing
- Social media posts

**URL:** https://swapcode.ai/lower-to-upper-case

### Playback Speed Calculator
Calculate video and audio duration at different playback speeds.

**Features:**
- Support for 0.25x to 3x playback speeds
- Shows time saved compared to normal speed
- Perfect for YouTube, podcasts, audiobooks, courses
- Custom speed options
- Free with no registration

**Use Cases:**
- Online course planning
- YouTube playlist duration
- Podcast and audiobook optimization
- Lecture review scheduling

**URL:** https://swapcode.ai/playback-speed-calculator

### Binary Translator
Convert binary to text and text to binary instantly with bidirectional conversion.

**Features:**
- Convert binary (0s and 1s) to readable text
- Convert text to binary representation
- Support for ASCII characters
- Space or no-space binary formats
- Real-time conversion
- Free with no registration

**Use Cases:**
- Computer science education
- Binary data analysis
- Programming exercises
- Digital communication understanding
- Debugging binary data

**URL:** https://swapcode.ai/binary-translator

### Hex to Text Converter
Convert hexadecimal strings to readable text instantly.

**Features:**
- Convert hex to text/ASCII
- Support for hex strings with or without spaces
- Handles uppercase and lowercase hex
- Real-time conversion
- Free with no registration

**Use Cases:**
- Web development and debugging
- Data decoding
- Hex dump analysis
- Network protocol analysis
- Cryptography and security

**URL:** https://swapcode.ai/hex-to-text

### Hex to RGB Converter
Convert hexadecimal color codes to RGB values with live preview.

**Features:**
- Convert HEX to RGB (Red, Green, Blue values)
- Live color preview swatch
- Support for 6-digit and 3-digit hex codes
- Copy RGB values easily
- Color picker integration
- Free with no registration

**Use Cases:**
- Web design and CSS styling
- Graphic design color matching
- Design system documentation
- Front-end development
- Digital art and illustration

**URL:** https://swapcode.ai/hex-to-rgb

### REM to PX Converter
Convert CSS REM units to pixels based on font size.

**Features:**
- Convert REM to pixels with custom base font size
- Reverse conversion (pixels to REM)
- Default base: 16px (browser standard)
- Real-time calculation
- Perfect for responsive design
- Free with no registration

**Use Cases:**
- Responsive web design
- CSS calculations
- Accessibility optimization
- Design system development
- Front-end development

**URL:** https://swapcode.ai/rem-to-px

### Character Counter
Count characters, words, sentences, and paragraphs with detailed analytics.

**Features:**
- Character count (with and without spaces)
- Word count
- Sentence count
- Paragraph count
- Line count
- Average word length
- Reading time estimation
- Real-time counting
- Free with no registration

**Use Cases:**
- Content writing and SEO
- Social media character limits
- Academic writing
- Email and message composition
- Document analysis
- Meta description optimization

**URL:** https://swapcode.ai/character-counter

### Blank Space Copy Paste
Copy invisible blank space characters for various uses.

**Features:**
- Multiple types of invisible characters (zero-width space, em space, en space, hair space, thin space)
- Click-to-copy functionality
- Works in social media, games, and forms
- Bypass character requirements
- Free with no registration

**Use Cases:**
- Invisible Instagram bios
- Discord invisible names
- Gaming invisible usernames
- Bypass form validation
- Create blank text fields
- Social media formatting

**URL:** https://swapcode.ai/blank-space-copy-paste

### Password Creator
Generate strong, secure random passwords instantly.

**Features:**
- Customizable password length (8-128 characters)
- Character type options (uppercase, lowercase, numbers, symbols)
- Generate multiple passwords at once
- Cryptographically secure random generation
- Copy individual passwords
- 100% browser-based (no server upload)
- Free with no registration

**Use Cases:**
- Create strong passwords for accounts
- Security and password management
- System administration
- Web development testing
- User account creation
- API key generation alternatives

**URL:** https://swapcode.ai/password-creator

### Random Number Wheel
Spin a wheel to pick random numbers with animation.

**Features:**
- Customizable number range (minimum and maximum)
- Animated wheel spinning
- Preset ranges (dice 1-6, lottery 1-100, scale 1-10)
- Cryptographically secure random selection
- Unlimited spins
- Free with no registration

**Use Cases:**
- Random number selection
- Games and giveaways
- Classroom activities
- Decision making
- Contest winner selection
- Raffle and lottery number picking

**URL:** https://swapcode.ai/random-number-wheel

### Team Randomizer
Split people into random teams instantly with balanced distribution.

**Features:**
- Random team generation
- Customizable team count
- Balanced team distribution
- Handle uneven divisions fairly
- Visual team display
- Cryptographically secure randomization
- Free with no registration

**Use Cases:**
- Sports and PE classes
- Classroom group formation
- Games and party teams
- Workshop breakout groups
- Project team assignment
- Icebreaker activities

**URL:** https://swapcode.ai/team-randomizer

### Last Name Generator
Generate realistic last names with AI for any purpose.

**Features:**
- AI-powered surname generation
- Culturally diverse names (any origin)
- Custom style specifications
- Fantasy and realistic names
- 10-15 surnames per generation
- Sign-in required (free)

**Use Cases:**
- Creative writing and fiction
- Character development
- Gaming character names
- Worldbuilding projects
- Privacy and pseudonyms
- Role-playing games

**URL:** https://swapcode.ai/last-name-generator

### Character Name Generator
Generate unique character names for stories, games, and creative projects with AI.

**Features:**
- AI-powered full name generation
- Genre-specific names (fantasy, sci-fi, historical, modern)
- Cultural diversity support
- Character description-based generation
- First and last name combinations
- Sign-in required (free)

**Use Cases:**
- Novel and story writing
- RPG and D&D characters
- Video game avatars
- Worldbuilding
- Character development
- Creative projects

**URL:** https://swapcode.ai/character-name-generator

### Base64 to Image Converter
Decode base64 strings to images instantly with preview and download.

**Features:**
- Decode base64 to image files
- Support for all image formats (PNG, JPEG, GIF, WebP, BMP, SVG)
- Accepts data URIs or raw base64
- Image preview before download
- Image information (format, dimensions)
- 100% browser-based (no server upload)
- Free with no registration

**Use Cases:**
- API response debugging
- Email attachment recovery
- Web development testing
- Data recovery from backups
- Database image extraction
- JSON payload image viewing

**URL:** https://swapcode.ai/base64-to-image

### Image to Base64 Converter
Convert images to base64 strings for HTML, CSS, and API embedding.

**Features:**
- Upload images or drag and drop
- Support for all image formats
- Generate base64 string or data URI
- Image preview and details
- File size comparison
- 100% browser-based (no server upload)
- Free with no registration

**Use Cases:**
- HTML/CSS inline images
- Eliminate HTTP requests
- Avoid CORS issues
- API and JSON payloads
- Email embedded images
- Canvas and WebGL operations

**URL:** https://swapcode.ai/image-to-base64

### HTML Viewer Online
View and preview HTML code instantly with real-time rendering.

**Features:**
- Real-time HTML preview
- Upload HTML files
- CSS and JavaScript support
- Split-screen editor and preview
- Inline styles and scripts execution
- Fullscreen preview mode
- 100% browser-based rendering
- Free with no registration

**Use Cases:**
- HTML testing and debugging
- Learning HTML structure
- Email template preview
- Code snippet testing
- Web development education
- Markup validation

**URL:** https://swapcode.ai/html-viewer-online

### Online HTML Compiler
Run HTML, CSS, and JavaScript code with full IDE experience.

**Features:**
- Separate HTML, CSS, JavaScript editors
- Real-time code compilation
- JavaScript console output
- Auto-save in browser localStorage
- External library support (CDN)
- Download complete HTML files
- Error and warning display
- Free with unlimited use

**Use Cases:**
- Learning web development
- Quick prototyping and testing
- Code debugging with console
- Interview preparation
- Frontend experimentation
- Component testing

**URL:** https://swapcode.ai/online-compiler-html

### Online Notepad
Simple, fast text editor with auto-save and word count.

**Features:**
- Auto-save to browser storage
- Real-time word, character, and line count
- Download notes as text file
- Copy to clipboard
- Monospace font for code
- 100% private and secure
- Works offline after loading
- Free with unlimited use

**Use Cases:**
- Quick notes and ideas
- Draft writing without distractions
- Code snippet storage
- To-do lists and task management
- Meeting notes
- Temporary text editing
- Scratch pad for developers

**URL:** https://swapcode.ai/online-notepad

### String Length Calculator
**Description:** Calculate character, word, line, sentence, paragraph count and byte size. Real-time text analysis with reading time estimation.

**Features:**
- Character count (with and without spaces)
- Word, line, sentence, paragraph counting
- Byte size calculation
- Reading time estimation
- Copy statistics
- All languages supported

**URL:** https://swapcode.ai/string-length-calculator

### Comma Separator Tool
**Description:** Add or remove commas from text. Convert lists to CSV format with custom delimiters (comma, semicolon, pipe, tab).

**Features:**
- Add commas between lines
- Remove all commas
- Custom delimiters (semicolon, pipe, tab)
- Trim whitespace and remove empty lines
- Add quotes around items
- CSV formatting

**URL:** https://swapcode.ai/comma-separator

### Online Clipboard Manager
**Description:** Save and manage unlimited text snippets, code blocks, and notes in your browser with labels, timestamps, and search.

**Features:**
- Save unlimited text clips
- Add labels and timestamps
- Search through saved clips
- Copy clips with one click
- Browser localStorage (complete privacy)
- Delete individual or all clips

**URL:** https://swapcode.ai/online-clipboard

### Image Rotator
**Description:** Rotate images by 90°, 180°, 270° or custom angles. Lossless rotation for all image formats (JPG, PNG, GIF, WebP).

**Features:**
- Rotate 90/180/270 degrees
- Custom angle rotation (0-360°)
- All image formats supported
- Lossless transformation
- Side-by-side preview
- Instant browser-based processing

**URL:** https://swapcode.ai/image-rotator

### Image Flipper & Mirror
**Description:** Flip images horizontally (mirror), vertically, or both. Create mirror effects and reverse image orientation instantly.

**Features:**
- Flip horizontal (mirror effect)
- Flip vertical (upside down)
- Flip both directions
- Lossless transformation
- All image formats
- Instant processing

**URL:** https://swapcode.ai/image-flipper

### Image Color Inverter
**Description:** Invert image colors to create negative effects. Reverse RGB values for artistic or technical purposes.

**Features:**
- Invert all colors (negative effect)
- Lossless RGB inversion
- All image formats supported
- Side-by-side comparison
- Instant processing
- Perfect for dark mode conversions

**URL:** https://swapcode.ai/image-inverter

### Graph Paper Generator
**Description:** Create custom printable graph paper with adjustable grid spacing, colors, and paper sizes (A4, Letter, A3, Legal).

**Features:**
- Custom grid spacing (1-50mm)
- Multiple paper sizes (A4, Letter, A3, Legal)
- Portrait and landscape orientation
- Customizable line colors and thickness
- High-resolution printable output
- Download as PNG or print directly

**URL:** https://swapcode.ai/graph-paper-generator

### Text to PDF Converter
**Description:** Convert plain text to PDF documents with customizable fonts, sizes, and formatting. Instant browser-based conversion.

**Features:**
- Convert text to PDF instantly
- Customize font family (Helvetica, Times, Courier)
- Adjust font size (10-18pt)
- Portrait/landscape orientation
- Preserve line breaks and paragraphs
- Download PDF with one click

**URL:** https://swapcode.ai/text-to-pdf-converter