Fast, private developer tools

Format, validate and beautify JSON

Generate v4 and v7 UUIDs in bulk

Encode and decode Base64 text and files

Test regex patterns with live match highlighting

Inspect JWT header and payload

Convert epoch to human date and back

Generate MD5, SHA-1, SHA-256, SHA-512 hashes

Percent-encode and decode URLs

Generate strong, customizable passwords

Compare two texts and highlight differences