✅
Validators
Validate and lint your data with confidence.
7 free tools · updated regularly
✅ Validators
Cron Expression Parser
Translate a cron schedule into plain English and see each field explained.
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XML Validator
Check whether your XML is well-formed and get clear error messages for any problems.
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URL Parser
Break any URL into protocol, host, port, path, query parameters and hash.
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Credit Card Validator
Check a card number with the Luhn algorithm and detect the card type — private and free.
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Email Validator
Check whether one or many email addresses are correctly formatted, instantly and in bulk.
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Regex Tester
Test regular expressions with live match highlighting, flags and capture groups.
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JSON Formatter & Validator
Beautify, minify and validate JSON instantly — with clear error messages. Free and private.
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Validate JSON, regex, credit cards, emails and more — with clear, instant feedback.