JSON Formatter and Validator
Paste JSON to validate it, then format it with your preferred indentation or minify it.
Runs in your browser. Nothing is uploaded.
How to use it
- Paste your JSON.
- Choose Format or Minify.
- Fix any error shown, then copy the output.
Common uses
- Reading API responses
- Checking config files
- Shrinking JSON for transfer
Questions
What does the validator check?
That the text is valid JSON according to the standard parser built into your browser.
Is my data private?
Yes. It never leaves your device.