JSON Beautifier
Use this free online JSON Beautifier to beautify and pretty print minified or messy JSON with clean indentation. It works instantly in your browser, and your data never leaves your device.
About the JSON Beautifier
JSON (JavaScript Object Notation) is the most common format for APIs and config files, but servers usually send it as one long minified line. A JSON beautifier re-indents it so nested objects and arrays are easy to read, and it flags syntax errors with the exact line so you can fix broken data fast.
Also known as: json beautify, beautify json, json pretty print, json formatter online.
How to use the JSON Beautifier
- Paste your input into the box above, upload a file, or click Sample to try an example.
- Pick any options you need. The JSON Beautifier processes your input instantly as you type.
- Click Copy to copy the output or Download to save it as a file.
Features
- Free with no signup and no daily limits
- Private: runs entirely in your browser
- Works on mobile, tablet and desktop
- Upload files and download results
- Live results as you type, with clear error messages
- Clean, fast interface with no popups
Frequently asked questions
Is the JSON Beautifier free to use?
Yes. The JSON Beautifier is completely free with no signup, no limits on normal use and no watermark.
Is my data safe?
Yes. Everything is processed by JavaScript inside your own browser. Your text is never uploaded to our server or stored anywhere.
Why does it say my JSON is invalid?
The most common reasons are single quotes instead of double quotes, a trailing comma after the last item, keys without quotes, or comments. The error message shows the exact line and column so you can fix it quickly.
Can I upload a JSON file?
Yes. Click Upload to open a .json or .txt file from your device, or paste the content directly. You can download the result as a file.
What else is this tool called?
People also search for it as json beautify, beautify json, json pretty print, json formatter online. It is the same free tool.