Paste JSON to pretty-print, validate or minify it. Errors point to the exact line and column.
🔒 Your JSON stays in your browser – nothing is sent or saved.
How to use the json formatter
- Paste your JSON.
- Click Format, Minify or Validate.
- Copy or download the result.
Safe for API keys and private data
Many online formatters send your JSON to a server. This one runs entirely in your browser, so tokens and customer data stay private.
Frequently asked questions
How do I find a JSON syntax error?
Click Validate. The tool shows the error message and the line and column where it occurs.
What is JSON minify?
It removes all whitespace to make the JSON as small as possible for sending over the network.
Can it sort keys?
Yes. Tick Sort keys before formatting.