JSON editor

Format, validate, compare, and transform JSON.

Transform JSON

How to use the JSON editor

  1. Paste JSON in the editor or open a file from your device.
  2. Use format, minify, or repair buttons as needed.
  3. Compare two versions or download the result after validation.

JSON editor — frequently asked questions

Yes. The editor is completely free and runs in your browser with no install.

Yes. It shows errors with line numbers and suggests fixes for common issues.

Yes. Open two panes side by side and view differences between them.

No. Editing and validation happen locally in your browser.

Yes. It handles relatively large files with fast format and minify tools.