Tamim Labs

JSON Formatter & Validator

Beautify, minify, validate and sort JSON as you work. Everything runs in your browser's memory — your data never leaves your device.

Runs in your browser — nothing is uploaded

JSON input

Waiting for input
0 B in

Formatted JSON appears here.

0 B out

What JSON Formatter & Validator does

  • Collapsible tree view with JSONPath and a key/value search
  • Beautify (2/4-space, tab), minify or deep-sort keys
  • Convert to YAML, CSV, XML or TypeScript interfaces
  • Repair mode for comments, trailing commas and single quotes
  • Escape / unescape, upload or drag-drop a file
  • Live validation with the exact line & column of errors
  • Real byte counts, key/array counts and depth

How to use it

  1. 01

    Open the JSON tool.

  2. 02

    Paste or type JSON, drop in a file, or load the sample.

  3. 03

    Explore the tree, or format, minify, sort, repair or convert it.

  4. 04

    Copy or download the result. Nothing is uploaded.

Common questions

Is my JSON uploaded anywhere?
No. Your JSON is parsed and re-serialised entirely inside your browser's memory using your own device's processing. Nothing you paste is ever sent to a server, and closing the tab discards it.
How do I fix JSON that has comments or trailing commas?
Open the tool, switch on Repair mode, and it converts comments, trailing commas and single-quoted strings into strict JSON. It also reports the exact line and column of any syntax error so you can jump straight to it.
Can I convert JSON to another format?
Yes. Besides formatting and validating, the tool converts JSON to YAML, CSV, XML and TypeScript interfaces, so you can move a payload into the format your next task needs.

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