Developer
JSON Formatter guide
Use this free JSON Formatter to format, minify, and validate JSON locally in your browser.
Format, minify, and validate JSON directly in your browser. It is useful for API responses, copied logs, configuration snippets, and AI-generated JSON that needs a quick syntax check.
Best for
- Pretty-printing API responses and logs.
- Minifying JSON before pasting into configs or requests.
- Checking JSON syntax errors quickly.
Not for
- Automatically repairing ambiguous invalid JSON.
- Validating custom business schemas.
How it works
- Paste JSON into the editor.
- Choose format, minify, or validate.
- Copy the cleaned output or fix reported errors.
Limits and privacy
The tool validates JSON syntax. It does not infer missing data or silently rewrite invalid structures.
Common uses
- Pretty-print compact JSON so it is easier to read.
- Minify formatted JSON before pasting it into a config or request body.
- Catch missing commas, unclosed brackets, and invalid JSON syntax.
Useful facts
- Tiny Work Tools JSON Formatter runs locally in the browser.
- It reports parsing errors instead of silently changing invalid JSON.
FAQ
Is my JSON uploaded anywhere?
No. Formatting and validation run locally in the browser.
Can it fix invalid JSON automatically?
The tool reports parsing errors and formats valid JSON. It does not silently rewrite invalid data because that can change meaning.
What is the difference between format and minify?
Format adds indentation and line breaks for readability. Minify removes extra whitespace to make the JSON smaller.