How to use JSON Formatter
- Paste your JSON.
- Format to pretty-print, or minify to compress.
- Fix any validation errors the tool reports.
- Copy the result.
Worked examples
Concrete numbers and cases you can check against the tool above.
Minified webhook body
A single-line payload is unreadable. Format it with 2-space indent to find a missing comma or a string that should have been a number. Minify again only when you need to paste into a size-limited field. Invalid JSON should fail with a parse error, not silently “pretty-print” broken data.
When to use JSON Formatter
Minified API payloads are painful to read. Formatting and validating JSON in the browser helps debugging without posting secrets to online formatters.
Common use cases
- Pretty-print a webhook body while building an integration.
- Validate a config file before committing it.
- Minify JSON for an embed size budget.
- Find a missing comma in a hand-edited payload.
Inputs and outputs
- JSON text
Privacy
This tool runs entirely in your browser. Your data never leaves your device — nothing is uploaded to our servers.
Frequently asked questions
- What if my JSON is invalid?
- The formatter will indicate a parse error. Check commas, quotes, and brackets, then try again.
- Does minify change meaning?
- No. Minifying removes unnecessary whitespace while keeping the same data.
- Is JSON uploaded?
- No. Formatting stays on your device.