Format, validate & minify JSON
Beautify or minify JSON live, with clear errors.
No uploads. No accounts. Runs in your browser.
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About this tool
Paste JSON and see it pretty-printed live as you type, with a one-click toggle to minified output. Invalid JSON gets a precise error, including the line where parsing failed, which makes this a quick validator too.
Because parsing happens in your browser, API payloads and config files with secrets in them never leave your machine. Copy the result, download it, or share it via the URL.
How it works
- Paste your input, or drop a text file onto the box.
- The output updates live as you type.
- Copy it to the clipboard, or download it as a file.