JSON Formatter and Validator

Paste raw JSON to check it is valid and read it with clean indentation. Errors point to the exact line and column.

How to use the JSON Formatter and Validator

  1. Type or paste your text into the box on the left.
  2. Adjust the options above if you need to. The result updates as you type.
  3. Click Copy result or Download to use your result.

What you can use it for

  • Debug API responses
  • Validate config files
  • Minify JSON payloads

Private by design

The JSON Formatter and Validator runs entirely in your browser. Your text and files are never uploaded or stored on a server, so it is safe for work documents and personal information. It is free, with no sign-up and no limits on how often you use it.

Frequently asked questions

How do I find a JSON error?

Paste your JSON. If it is invalid, the message shows the line and column where parsing failed.

What does sort keys do?

It orders object keys alphabetically at every level, which makes two files easy to compare.

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