JSON Formatter & Minifier
Beautify, minify, and validate JSON in one place — right in your browser. Fast, private, and free with no upload.
How to format and minify JSON
Paste your JSON and choose Beautify to pretty-print it with clean two-space indentation, Minify to compress it to a single line, or Validate to check it for errors. Any parse problem is reported with a clear message so you can fix it fast.
This is a everyday tool for anyone working with APIs, config files, or data payloads. Because it runs entirely in your browser, even sensitive JSON stays on your device.
Frequently asked questions
What's the difference between beautify and minify?
Beautify adds indentation and line breaks so JSON is easy to read and debug. Minify strips all unnecessary whitespace to make the smallest possible file for transmission or storage.
How does validation work?
The validator tries to parse your JSON and reports either 'Valid JSON' or the exact parse error, including where it failed — so you can quickly spot a missing comma or bracket.
Is there a size limit?
There's no hard limit beyond your browser's memory. Very large documents may take a moment to process since everything runs on your device.
Is my JSON uploaded anywhere?
No. All formatting and validation happens locally in your browser — your data never leaves your device, so it's safe for sensitive payloads.