GoCareerGo Tools
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Developer Tools
Free developer utilities in one place — format and validate JSON, decode JWT tokens, test regular expressions, minify CSS and JavaScript, convert timestamps and encode Base64. Built for quick debugging without leaving the browser.
JSON, JWT, regex and code formatters.
All 10 developer tools are free — use works without login.10 free developer tools — no login to use.
JSON Formatter
Pretty-print and inspect JSON with readable indentation.
Open →JSON Validator
Check whether JSON is valid before you ship or debug.
Open →Base64 Encoder
Encode and decode Base64 strings quickly in the browser.
Open →JWT Decoder
Inspect JWT header and payload without sending tokens anywhere.
Open →Regex Tester
Test regular expressions against sample text live.
Open →HTML Preview
Write HTML and preview the rendered output instantly.
Open →CSS Minifier
Minify CSS to reduce file size for production.
Open →JavaScript Minifier
Compress JavaScript for faster page loads.
Open →UUID Generator
Generate unique UUIDs for APIs, tests and databases.
Open →Color Picker
Pick colours and copy HEX, RGB and HSL values.
Open →