code
Developer Tools
11 free tools
Free online developer utilities. Format JSON, test regex, decode JWT, encode Base64, generate hashes, edit Markdown, and more. Built for developers, by developers.
data_object
JSON Formatter
Prettify and validate JSON.
schedule
Timestamp Converter
Unix to date & back.
lock
Base64 Encoder/Decoder
Encode/decode Base64 strings.
manage_search
Regex Tester
Real-time regex matching.
token
JWT Decoder
Inspect JWT tokens.
edit_note
Markdown Editor
Live Markdown preview.
link
URL Encoder/Decoder
Encode/decode URLs.
fingerprint
Hash Generator
SHA-256, MD5, SHA-1 hashes.
code
HTML Encoder/Decoder
Encode/decode HTML entities.
timer
Cron Expression Generator
Build cron jobs easily.
difference
Text Diff Checker
Compare and diff text.
About Developer Tools
Free online developer utilities. Format JSON, test regex, decode JWT, encode Base64, generate hashes, edit Markdown, and more. Built for developers, by developers. Every tool runs entirely in your browser with no data uploaded to any server. No signup, no limits, completely free.