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JSON Formatter & Validator
Format, validate, and minify JSON. All processing happens in your browser.
What is JSON Formatter?
JSON Formatter validates, formats (pretty-prints), and minifies JSON data with configurable indentation. Whether you're working with a compact API response or a sprawling configuration file, this tool transforms raw JSON into a clean, readable structure — or compresses it down to a single line for production use.
How to Use
- Paste your JSON into the editor or drag and drop a .json file
- Click Format to pretty-print, Minify to compress, or Validate to check for syntax errors
- Copy the result to your clipboard or download it as a file
Use Cases
- Debugging API responses by expanding minified JSON into a readable format
- Validating JSON payloads before sending them to an endpoint
- Cleaning up configuration files for version control readability
- Minifying JSON data to reduce file size for production deployments
Privacy & Security
All processing happens entirely in your browser. Your data is never sent to any server. You can verify this by checking the network tab in your browser's developer tools — you'll see zero outbound requests.
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