JSON Toolkit · v1.0 · Free forever
The last JSON tool you’ll ever need.
Format, validate, minify and visualize JSON as a tree or grid. Query with JSONPath, diff two documents and generate realistic samples — 100% in your browser.
- Client-side only
- Zero telemetry
- RFC 8259 compliant
- 5 tools · 1 place
JSON Toolkit
Open full page →Indent
Input · RAW
Valid
1 2 3 4 5 6 7 8 9 10 11 12
Output · Formatted
1
READY
TAB · FORMAT444 B
All the tools
Every dev utility, one keystroke away
Handcrafted, keyboard-first, private by default.
JSON Formatter & Validator
Beautify, minify, validate and inspect JSON with a rich Tree Viewer and Grid Viewer.
Open
Base64 Encoder / Decoder
Encode text and files to Base64 or decode Base64 back to text — instantly.
Open
JWT Decoder
Decode and inspect JSON Web Tokens — header, payload, expiry, and claims.
Open
UUID Generator
Generate cryptographically strong UUID v1 / v4 / v7 — single or in bulk.
Open
Hash Generator
MD5, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512 hashes — client-side & safe.
Open
Ship faster
Bookmark it. Share it. Save 100 hours a year.
One keyboard shortcut opens the global search. Everything else is one click away.