Code Validators
Validate and check code syntax and data formats. Support for PHP, SQL, CSV, XML, JSON, UUID, and SEO validators.
All Code Validators
Data Validation
Code Validation
SEO & Web
How to Validate Code and Data Online
Check your code and data for errors before deployment.
- Choose your validator - Select the validator for your code type or data format
- Input your code or data - Paste your code, upload a file, or enter a URL to validate
- Click Validate - Press the validate button to check for errors
- Review the results - Check the validation report for errors, warnings, and suggestions
- Fix identified issues - Use the error messages and line numbers to fix problems in your code
Frequently Asked Questions
Why should I validate my code before deployment?
Validation catches syntax errors, structural issues, and common mistakes before they cause problems in production. A simple typo in SQL can corrupt data, invalid robots.txt can block search engines, and malformed JSON can break APIs. Validators help you catch these issues early when they are easy to fix.
What types of errors do validators detect?
Our validators detect syntax errors (missing brackets, quotes, semicolons), structural issues (invalid nesting, wrong data types), format violations (incorrect date formats, invalid URLs), and semantic errors (undefined references, duplicate keys). Each validator provides detailed error messages with line numbers and suggestions.
Is my data secure when using validators?
Yes, most validators process data entirely in your browser using JavaScript. Your code, configuration files, and data never leave your device. For validators that require server processing, all data is transmitted over HTTPS and immediately deleted after validation.
Can I validate large files?
Yes, our validators handle files of any reasonable size. Browser-based validators process data locally without upload limits. For very large files (100MB+), we recommend splitting into smaller chunks or using our API for batch validation.
How accurate are the validation results?
Our validators follow official specifications and standards for each format. PHP validation uses PHP parser rules, SQL follows ANSI SQL standards, XML validates against schemas, and SEO validators follow Google guidelines. Results are highly accurate for standard use cases.
Do validators fix errors automatically?
Validators identify and report errors but do not automatically fix them. This is intentional - automatic fixes could change your intended logic. Instead, validators provide detailed error messages, line numbers, and suggestions so you can make informed corrections.