Minify JSON Online
Minify JSON (strip whitespace and line breaks) to reduce its size.
🔒 100% client-side — no data sent
Compress your JSON files onto a single line by removing unnecessary whitespace, line breaks and indentation. Perfect for shrinking data before transfer or storage. Everything runs in your browser: no data is ever sent to a server.
What is it for?
- ▸ Shrink an API response before sending it
- ▸ Optimize a config file for production
- ▸ Paste minified JSON into a variable or URL
- ▸ Lighten a payload for performance testing
FAQ
Does minifying change my data?
No, only whitespace and line breaks are removed. The JSON structure and values stay exactly the same.
Is my JSON sent to a server?
No, processing is 100% local in your browser. Your data never leaves your device.
What happens if my JSON is invalid?
The tool flags the error so you can fix it before minifying.