JSON Formatter
Free JSON formatter and validator. Beautify or minify JSON, see errors highlighted, and copy formatted output. Runs entirely in your browser.
About the JSON Formatter
The JSON Formatter runs entirely in your browser. Your data never leaves your device — there's no upload to any server. This keeps your files and information completely private while delivering instant results.
Free JSON formatter and validator. Beautify or minify JSON, see errors highlighted, and copy formatted output. Runs entirely in your browser. It's free, requires no sign-up, and works on any device — desktop or mobile.
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Frequently Asked Questions
Is the JSON formatter free?
Yes, our JSON formatter is completely free. You can beautify, minify, validate, and copy JSON without any limits or sign-up.
Does the JSON formatter work with large files?
Yes, it handles large JSON files. Since it runs in your browser, performance depends on your device. Most JSON files up to several MB are processed instantly.