Is JSON uploaded?
No. Parsing and formatting run in your browser.
JSON formatter online
Format and validate JSON
Paste JSON, format it with indentation, minify it, or validate it directly in your browser.
Paste JSON to start.
How to use
- Paste JSON into the input box.
- Format, minify, or validate the JSON.
- Copy the output for your editor, API client, or documentation.
FAQ
Will invalid JSON be overwritten?
No. Invalid input shows an error and keeps your previous output.