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JSON Formatter
JSON Formatter
Beautify and structure your JSON data with custom indentation
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About the JSON Formatter
Format, beautify and indent JSON so it is easy to read and debug. Paste minified or messy JSON and get a clean, validated result.
How to use the JSON Formatter
- Paste your JSON, or press Load Sample JSON to try it.
- Choose the Indentation Level: 2 Spaces, 4 Spaces or Tabs.
- Press Format & Beautify JSON. Use Copy JSON or Download .json to keep the result.
Worked example
The input {"name":"Ada","langs":["en","fr"]} becomes an indented structure with each key on its own line.
When to use the JSON Formatter
- Making API responses readable while you debug.
- Preparing JSON for documentation or code review.
- Spotting missing brackets and commas in configuration files.
Common mistakes to avoid
- Trailing commas, single quotes and unquoted keys, all of which are invalid in JSON.
- Pasting a JavaScript object and expecting it to be valid JSON.
- Including comments, which JSON does not allow.
Tips
- If formatting fails, the JSON has a syntax error such as a trailing comma, single quotes or an unquoted key.
- Do not paste secrets such as API keys into shared or public tools.
Frequently Asked Questions
JavaScript Object Notation, a lightweight text format for structured data used by most web APIs.
Formatting changes the layout. Validating checks that the JSON is correct. This tool does both: invalid JSON gives an error.
Look at the position mentioned in the error. It is usually a missing quote, a comma in the wrong place or an unclosed bracket.