JSON tools
JSON Beautifier & Formatter
Paste or drop a JSON file and get clean, indented, readable output in one click.
How to use it
-
Paste or drop your JSON
Paste your JSON into the editor, or drag and drop a .json file onto the page.
-
Beautify it
Click Beautify to instantly indent and format the JSON into clean, readable output.
-
Copy, download, or publish
Copy the formatted JSON, download it as a file, or publish it to a live HTTPS link to share.
Frequently asked questions
Is this JSON beautifier free?
Yes, completely free, with no sign-up, no watermark, and no limit on how many times you can use it.
Is my JSON uploaded anywhere?
No. All formatting happens entirely in your browser using JavaScript. Your JSON is never sent to our servers, so it stays private even for confidential data.
Is there a file size limit?
There is no fixed limit. Because the work runs locally, the only real ceiling is your device’s memory. Files up to several megabytes format instantly, and much larger ones still work, just a little slower.
Why does it say my JSON is invalid?
The beautifier parses your JSON first, so it flags real syntax problems: usually a trailing comma, a single quote instead of a double quote, an unquoted key, or a missing bracket. Fix the highlighted spot and re-run. To check structure without reformatting, use the dedicated JSON Validator.
Can I choose the indentation?
Yes. You can switch between 2-space, 4-space, and tab indentation to match your project’s style, then copy or download the result.
How do I host or share the formatted JSON?
Click Publish and your formatted file goes live at its own HTTPS link in seconds, handy for sharing an API sample, a config, or a fixture with a teammate. No build step, no server setup.