Validators Tools
Test and validate patterns, schemas, and data formats. Ensure your data meets required specifications.
A validator that only says "invalid" is half a tool. These validators parse the input properly and tell you what is wrong and where, covering regex, JSON schema, cron expressions, email, phone, credit card, URL, and IP formats.
14 tools availableRegex Tester
Test regex with syntax highlighting
XPath Tester
Test XPath with live match highlighting
JSON Schema Validator
Validate JSON against a schema
Cron Expression Validator
Parse and preview cron schedules
Email Validator
Validate email address format
Credit Card Validator
Validate credit card numbers using Luhn algorithm
Phone Number Validator
Validate international phone number formats
URL Validator
Validate URL format and structure
IP Address Validator
Validate IPv4 and IPv6 addresses
IBAN Validator
Validate IBANs with mod-97 checksum, 89 countries
File Hash Checker
Calculate and verify file checksums
Regex Builder
Visual regex builder with match highlighting and pattern library
Password Strength Tester
Entropy, 0–4 score, crack-time estimates, weak-pattern checks
Gherkin Validator
Validate Cucumber feature file syntax and structure