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JSON Formatter & Validator

Free JSON formatter and validator. Beautify or minify JSON, sort keys, and catch syntax errors instantly in your browser.

JSON input

Indent

Object keys

Paste JSON and format to validate.

Output

JSON formatter tips

How do I validate JSON?

Paste JSON and click Format / Validate. Invalid JSON shows a parse error message.

Can I minify JSON?

Yes. Use Minify or set indent to Minify.

Can object keys be sorted?

Yes. Choose “Sort alphabetically” before formatting.

Is my JSON uploaded?

No. Parsing runs locally in your browser.