JSON Formatter
Format, validate, minify and inspect JSON without sending it to a server.
Open formatter →FAST · PRIVATE · BROWSER-BASED
Developer tools that just work.
Fast, private browser-based utilities for everyday development work. No sign-up required.
- ✓ No sign-up
- ✓ Runs in your browser
- ✓ Free to use
BROWSER UTILITIES
Developer tools
JSON Compare
Compare two JSON documents and clearly highlight structural and value changes.
Open tool →JWT Decoder
Inspect JWT headers, payloads, claims and expiry information locally.
Open tool →GUID Generator
Generate one or many UUIDs with practical formatting options.
Open tool →Base64 Encode & Decode
Encode or decode text in Base64 directly in the browser.
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PRACTICAL GUIDES
Learn as you build
How to format JSON safely
A practical guide to validating and formatting JSON without exposing sensitive data.
4 min readWhat is inside a JWT?
Understand headers, payloads, claims and why decoding is not verification.
5 min readGUID vs UUID: is there a difference?
A concise explanation of the terms, formats and common practical uses.
3 min read