JSON Formatter & Validator
JSON Formatter beautifies, validates and minifies JSON. Invalid JSON produces a clear, friendly error so you can fix it fast.
How to use
- Paste your JSON.
- Choose Beautify, Minify or Validate.
- Copy or download the result.
Features
- Beautify with custom indent
- Minify to one line
- Validation with error details
- Offline & private
Frequently asked questions
Why does it say invalid JSON?
JSON requires double quotes on keys and no trailing commas. The error message points to the issue.
Is my data sent anywhere?
No, all processing happens locally in your browser.