JSON Formatter & Validator
Format messy JSON into readable indented output, minify it, or validate that your data is well-formed — all in your browser.
JSON input
Not validated yet
Output
How to use the JSON Formatter & Validator
Paste any JSON text and instantly reformat it into readable, indented output — or minify it to save space. The tool also validates your data and reports the exact error if it is not well-formed.
Steps
- Paste JSON — type or paste your raw JSON into the input box.
- Format — click Format to pretty-print with 2-space indentation. If the input is not valid JSON, the exact parser error is shown inline.
- Minify — click Minify to compress the JSON to a single line, ideal for storage or transfer.
- Copy — copy the output to your clipboard with one click.
The status badge turns green for valid JSON and red when something is wrong, so you can trust the result before reusing it.