100+ free developer tools, continuously updated — all run in your browser with no sign-up.
Encode strings to Base64 or decode Base64 strings
Encode or decode URL percent-encoded strings
Format, validate and minify JSON
Decode and inspect JSON Web Tokens
Convert colors between HEX, RGB, HSL and ARGB formats
Generate MD5, SHA1, SHA256 and SHA512 hashes
Convert Unix timestamps to human-readable dates and vice versa
Generate RFC 4122 compliant UUIDs (v4)
Convert between JSON and YAML formats
Test and debug regular expressions with match highlighting