Free JSON Formatter & Validator

Format and validate JSON online with configurable indentation and optional key sorting. Read structured output and copy or download formatted JSON.

Free · No AI API key required

How to use this tool

Make a compact JSON document easier to read and find invalid syntax. Choose indentation and optional alphabetical key sorting when inspecting an API response, configuration or sample dataset.

  1. Paste your JSON document.
  2. Choose 0–8 indentation spaces and optionally enable key sorting.
  3. Run the formatter. Fix any validation error, then copy or download the result.

Example to try

{"name":"Sarvam","tools":["images","json"],"free":true}

Supported use and limits

Input must be valid JSON. Comments, trailing commas and single-quoted strings are not JSON. Formatting is not schema validation, and values still need to be checked against your application's rules.

Will formatting repair broken JSON?

No. The formatter parses your input and reports invalid JSON instead of guessing a correction. Fix the syntax first. Use JSON Schema Generator if you also need a starting schema for valid sample data.

Free to use without an account. Submitted input is processed on our server. How Sarvam Tools works.