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Developer tools: JSON, Regex, Base64
Strong password generator with customizable rules
Generate unique UUID v4 identifiers
Format and syntax-highlight JSON
Check JSON syntax and find errors
Test regular expressions in real time
Encode and decode Base64
Convert Unix time to a date and back
Convert numbers between binary, octal, decimal, and hex
Encode and decode strings for use in a URL
Generate MD5, SHA-1, and SHA-256 hashes
Compare two texts line by line
Generate realistic test data: names, emails, phones, addresses
Decode and inspect JSON Web Tokens
Format and beautify SQL queries
Hide a secret message inside a PNG image