Compress JSON by removing indentation and unnecessary whitespace while keeping structure intact. Paste pretty-printed JSON, minify it, and copy the compact payload for APIs, configs or size checks. Invalid JSON is rejected with a clear error before anything is produced. Everything runs locally.
🔒 Your file is processed locally in your browser whenever supported. This tool runs entirely on your device — nothing you type or upload is sent to a server, logged, or stored.
No. Only whitespace outside string values is removed. Key order and values are preserved exactly as parsed.
Some servers expect a specific Content-Type or reject very long single lines. Validate with the JSON formatter/validator first, and check the API docs for size limits.
The formatter pretty-prints for readability. The minifier does the opposite — compact output for transport and storage.
| Platform | Supported | Offline | Local | Server | Network |
|---|---|---|---|---|---|
| WEB | Yes | Yes | Yes | No | Not required |
| PWA | Yes | Yes | Yes | No | Not required |
| ANDROID | Yes | Yes | Yes | No | Not required |
| IOS | Yes | Yes | Yes | No | Not required |
Pretty-print and validate JSON with clear error messages.
Check whether text is valid JSON and see the parsed type.
Convert CSV with a header row into a JSON array.
Convert a JSON object into simple YAML.
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