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JSON Formatter & Validator

Paste JSON to instantly beautify, minify or validate it. Clear error messages help you find the exact problem — all in your browser.

Free · no sign-up Developer

About the JSON Formatter

Paste JSON to instantly beautify, minify or validate it. Clear error messages help you find the exact problem — all in your browser.

Will it tell me where an error is?

Yes — invalid JSON shows a clear parser message so you can fix it fast.

Is my JSON sent to a server?

No — formatting happens entirely in your browser.