Toolwinder
🧩

JSON Formatter

Beautify, minify, validate, and explore JSON with a tree viewer. Runs completely in your browser.

Loading tool…

Frequently Asked Questions

Is my JSON data uploaded anywhere?+
No. Formatting, validation, and the tree view all run entirely in your browser. Your JSON never leaves your device.
What happens if my JSON is invalid?+
The tool highlights the parse error inline, including the reason (e.g. unexpected token) so you can quickly locate and fix the issue.
Can I switch between compact and readable formatting?+
Yes. Use Beautify to pretty-print with 2 spaces, 4 spaces, or tabs, or Minify to collapse everything to a single line.

Related Tools

🕓
Timestamp Converter
Convert between Unix timestamps, ISO 8601, UTC, and local time
🔁
Encoding & Decoding
Encode and decode Base64, URL, HTML entities, Unicode, and Hex
🎨
Color Tools
Convert HEX, RGB, RGBA, and HSL, pick colors, and generate palettes
↔️
Text Diff Checker
Compare two texts side-by-side or inline and highlight differences