Developer Tools

JSON formatter, regex tester, Base64 encoder/decoder, UUID generator, SHA-256 hash generator, JWT decoder, cron builder, and 30+ utilities every developer bookmarks.

Format and validate JSON, test regex patterns with live highlighting, encode/decode Base64 and URLs, generate UUIDs and hashes, decode JWTs, build cron expressions, diff text, and minify CSS/JS/HTML. All 35+ tools run entirely in your browser — your code and data never touch a server.