JSON Formatter
Beautify, minify and validate JSON.
Validate, beautify and minify JSON instantly — everything runs in your browser, nothing is uploaded.
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About JSON Formatter
The JSON Formatter validates, beautifies and minifies JSON entirely in your browser. Paste raw JSON, drop a .json file or load the sample, and the output pane updates as you type — pretty-printed with 2-space, 4-space or tab indentation, or collapsed to a single minified line for production payloads.
Validation is built in: the tool tells you instantly whether the document is valid JSON and, when it is not, reports the exact line and column of the first error with a “Go to error” shortcut. Handy stats show line count, key count and nesting depth, and minifying reports how much smaller the output is.
An optional “Sort keys A→Z” switch normalizes object key order, which makes diffing two JSON documents far easier. Copy the result to your clipboard or download it as a formatted or minified .json file.
How to use JSON Formatter
- Paste your JSON into the editor, drop a .json file onto it, or click Sample.
- Check the status badge — invalid JSON shows the line and column of the error.
- Choose Beautify or Minify, then pick the indent style (2 spaces, 4 spaces or tabs).
- Enable Sort keys A→Z if you want a normalized key order.
- Copy the result or download it as a .json file.