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Online Developer Tools and Practical Technical References
Professional Browser-Based Developer Toolkit
Use practical browser-based tools for passwords, JSON, encoding, JWT, hashing, timestamps, regex and query strings, with straightforward supporting pages and responsive layouts.
How To Use
Personalized Workspace
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Favorite Tools
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Featured Tools
Create strong passwords and UUID v4 or UUID v7 values in your browser with flexible length, quantity and character settings.
Format, validate, minify and inspect JSON in one browser-based workspace with code view and tree view.
Encode or decode URL text, Base64 and Base64URL values in one browser-based workspace.
Decode JWT tokens, inspect claims and verify HS256, HS384 or HS512 signatures directly in the browser.
Generate MD5, SHA-1, SHA-256, SHA-512 and HMAC values, then compare them against an expected hash in the browser.
Convert Unix timestamps and date strings into readable formats for API checks, logs and time-based debugging.
Test regular expressions, inspect matches and preview replacement results in a browser-based workspace.
Parse query strings or full URLs, inspect decoded parameters and build clean query strings from editable rows.