JSON formatter

Validate, format, or minify JSON with helpful error messages.

Ready when you areLOCAL PROCESSING

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⌁ Your inputs stay in this browser. Download your work before leaving.

MAKE THE MOST OF IT

How to use json formatter

Paste JSON and choose Format or Minify. Download the result when you are done.

Things worth knowing

Only strict JSON is accepted: use double quotes, no comments, and no trailing commas. Large integer values can lose precision in JavaScript.

Is my input saved or uploaded?

Your input is processed locally and is not saved by this site. Reloading or leaving the page clears your work. Copy or download anything you want to keep. Only saved and recent tool IDs are stored on this device.

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