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JSON Beautifier

Beautify JSON online with 2-space, 4-space, or tab indentation. Paste raw or minified JSON and get clean, readable output instantly, complete with a tree view and syntax validation. Everything runs 100% client-side in your browser, so your data never leaves your device.

100% client sideInstant resultNo data sent
Input JSON
Output
Paste JSON to format, beautify, validate, minify, analyze, or view it as a tree.
0 input chars0 output charsWaiting for valid JSON

Frequently asked questions

4 answers
A JSON beautifier takes raw, compact, or minified JSON and rewrites it with consistent indentation, line breaks, and spacing so it becomes easy to read. Paste any valid JSON and choose 2-space, 4-space, or tab indentation, and the beautified output appears instantly. It also validates the syntax as it works, so malformed JSON is caught with a clear error message.

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Convert JSON arrays to CSV spreadsheets instantly.

JSON Schema Validator

Validate JSON data against a JSON Schema definition.

About the JSON Beautifier

APIs, log pipelines, and build tools usually emit JSON as a single compact line to save bandwidth, which makes it nearly impossible to read by eye. This JSON beautifier online tool restores structure instantly: pick 2 spaces, 4 spaces, or tabs, and every object and array is indented consistently with one key per line. The built-in parser validates as it beautifies, so a stray trailing comma or unquoted key is flagged with a precise error instead of producing garbage output. Because the beautifier is free and runs entirely in your browser, it is a safe choice for debugging production API responses, cleaning up config files, and preparing JSON snippets for documentation or code review.