How to use Compact JSON
- Paste the JSON you need to process into the input box.
- Select Minify and the result updates immediately, with no upload.
- When it looks right, Copy to save it.
About this tool
Compact JSON is a static, client-side tool with no backend. Compact JSON validates and reshapes your JSON locally with no server round-trip.
Because parsing is local, sensitive payloads never leave the page. Your input never leaves the page, and no account or install is required.
Frequently asked questions
How do I use Compact JSON?
Compact JSON runs entirely on your device: add your input, and it processes it locally in real time.
Is Compact JSON free to use?
Yes — Compact JSON is completely free, with no usage limits.
Where is my data processed by Compact JSON?
Entirely in your browser — Compact JSON keeps your data on your own machine and sends nothing anywhere.
Can Compact JSON handle large or deeply nested JSON?
Yes. Compact JSON parses JSON entirely in your browser, so large or nested documents stay on your device and never upload.
Does Compact JSON work on mobile?
Yes — Compact JSON is just a web page and runs on any modern browser, including phones and tablets.