Is my data sent to a server?

No. This tool runs entirely in your browser. Your data never leaves your browser.

What does minifying JSON do?

Removes whitespace and line breaks so the payload is smaller for APIs and storage.

No. Minified JSON is semantically identical — only formatting changes.

Developer Tools

Is my data sent to a server?: No. This tool runs entirely in your browser. Your data never leaves your browser.
What does minifying JSON do?: Removes whitespace and line breaks so the payload is smaller for APIs and storage.
Will minify change my data?: No. Minified JSON is semantically identical — only formatting changes.

Free online JSON formatter and validator. Beautify, minify, and validate JSON instantly in your browser with line-level errors.

Validate JSON online with line-level syntax errors. Free, instant, and private — runs entirely in your browser.

Convert JSON to YAML online in your browser. Free, fast, and private — no server upload.

Convert YAML configs to formatted JSON in your browser. Free, private, and instant.