Smart Web Apps JSON Formatter
Category

JSON Formatter

Pretty print or minify JSON with optional key sorting. Includes clear parse errors and copy buttons.

Paste JSON, choose options, then click Format.
Output
Formatted JSON
Minified JSON
Formulas

Tool description

This JSON formatter parses JSON safely in your browser and outputs both pretty-printed and minified versions. Optional key sorting can make diffs more stable for configs and API responses.

How to use

  1. Paste JSON into the input box.
  2. Select indent level and optional key sorting.
  3. Click Format to see formatted/minified outputs.
  4. Copy the version you need.

Why it’s useful

  • Fix formatting quickly for PRs and diffs.
  • Minify payloads for testing or embedding.
  • Spot parse errors with clear messages.

Use cases & interpretation

  • Debugging: format API responses to inspect nested fields.
  • Config files: sort keys to reduce diff noise.
  • Web dev: minify JSON for quick test fixtures.

FAQs

JSON objects are unordered by specification, but some tools preserve insertion order. Sorting changes the order of keys, not the values.

Formatting runs in your browser, but avoid pasting secrets into any web tool if you are unsure of your environment or browser extensions.
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