Developer tool
JSON Formatter & Validator
Validate, format and minify JSON with helpful errors.
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About this tool
Fast results without the upload.
Paste or load JSON to validate it, pretty-print it for readability or minify it for transport. Invalid JSON includes the closest available error position.
- 1Choose or enter your content.
- 2Adjust the clear, touch-friendly controls.
- 3Download or copy your result instantly.
JSON Formatter & Validator FAQ
Answers before you start
Does the validator send JSON to a server?
No. Parsing, formatting and validation run entirely in your browser.
Can I load and download .json files?
Yes. You can load a local file and download the formatted result.