JSON Formatter & Validator Online — Pretty Print or Minify
Validate JSON and pretty-print or minify it.
Runs in your browser · 100% Private (No upload)
Runs instantly in your browser. Nothing is uploaded.
FAQ
JSON Formatter — frequently asked questions
How do I find the error in my JSON?
Paste it into the input box. Invalid JSON shows a clear message with the position of the problem so you can fix it quickly.
Can I minify JSON instead of pretty-printing it?
Yes. Switch the mode to Minify, or keep Pretty-print and choose 2 spaces, 4 spaces or a tab for the indent.
Are my input uploaded or stored anywhere?
No. JSON Formatter runs in your browser, so your input stay on your device and are never sent to our servers or saved anywhere.
Is JSON Formatter really free? Do I need to sign up?
Yes, it is completely free. There is no account, signup, watermark or email to hand over; open the page and use it as often as you like.
More free tools: Base64 Encoder/Decoder · Code Minifier & Beautifier · Text Compare · All developer tools
QUICK GUIDE
How to use JSON Formatter
- Paste or type your input.
- Choose any options you need.
- See the result instantly below.
Privacy
This tool runs in your browser. No data is ever sent to a server.