Validators
Check JSON, XML, YAML, HTML, CSS, JavaScript, emails, URLs and more for errors.
- Credit Card Validator Check card numbers with the Luhn algorithm and identify the card brand, without the numbers leaving your browser.
- Email Validator Check a list of email addresses for valid syntax, with the reason for each failure and a disposable-domain flag.
- JSON5 Validator Parse JSON5 the way the specification defines it and jump straight to the first mistake.
- TOML Validator Check a TOML file against the 1.0 grammar and see exactly where the first problem sits.
- URL Validator Check a list of URLs for valid, absolute http or https syntax, with a reason for each failure.
Other categories
- JSON tools
- XML tools
- YAML tools
- CSV and TSV tools
- HTML tools
- CSS tools
- JavaScript tools
- SQL tools
- Code formatters
- Minifiers
- Data converters
- Encoders and decoders
- Escape and unescape
- Hash and cryptography
- String and text tools
- Number tools
- Color tools
- Unit converters
- Date and time tools
- Generators
- Random data generators
- Image tools
- Compress and decompress
- Network and DNS tools
- Web and developer tools
- Chart makers
- Cheat sheets
- Fun text tools
- Calculators