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JSON Formatter

Prettify unreadable JSON with clean indentation, minify JSON onto a single line, or sort object keys alphabetically in your browser.

Free to useNo sign-up requiredWorks in your browserPrivacy focused

JSON Formatter Workspace

How to use

  1. 1

    Step 1

    Paste your raw or minified JSON data into the Input JSON box, or click Load Sample to see an example.

  2. 2

    Step 2

    Select Format / Beautify (with 2 Spaces, 4 Spaces, or Tab indentation) or Minify, and check Sort Keys (A-Z) if needed.

  3. 3

    Step 3

    Copy the formatted JSON to your clipboard or click Download .json to save it as a file.

Key features

  • Formats compact or messy JSON with your choice of 2 spaces, 4 spaces, or tab indentation
  • One-click Minify mode removes extra spaces and line breaks to shrink payload size
  • Optional Sort Keys (A-Z) arranges object properties alphabetically at every level for easy comparison
  • Shows helpful summary stats including total object keys, nesting depth, and input/output file size

Supported formats

JSON

File limits & notes

Supports JSON documents up to 10 MB directly in your browser. Follows standard JSON syntax rules (double-quoted keys and strings); if your file has comments or trailing commas, click Auto-Fix JSONC to clean them up automatically.

Frequently asked questions

View all FAQs
Is my JSON data sent to any server when I format it?

No. All formatting, key sorting, and minifying happen locally in your browser so API responses, configs, and test data stay private.

Does Sort Keys (A-Z) change the order of items inside arrays?

No. Sorting only reorders named object keys alphabetically while keeping the exact order of items inside every array unchanged.

When should I use Minify mode?

Use Minify when you want to remove all unnecessary spaces and line breaks to make a JSON string as small as possible for API requests or configuration storage.

Practical Example: Making a Compact API Response Easy to Read and Compare

Sample Input
A single-line 450 KB API response with deeply nested objects and keys in random order.
Result
Formatted with clean 2-space indentation and alphabetically sorted keys so changes between two responses are easy to spot.