JSON Formatter
Format, beautify and indent JSON with your chosen indentation, and spot errors instantly. Everything stays in your browser.
How it works
- 1
Paste your input
Type or paste your data into JSON Formatter.
- 2
Adjust options
Tweak the available settings — the output updates as you type.
- 3
Copy the result
Copy the output to your clipboard or download it as a file.
Common uses
- Pretty-print a minified API response so you can actually read it.
- Re-indent a config file to a consistent 2- or 4-space style.
- Spot the exact spot a malformed payload breaks before shipping it.
About the JSON Formatter
Format, beautify and indent JSON with your chosen indentation, and spot errors instantly. Everything stays in your browser.
JSON Formatter is part of a free, privacy-first toolkit. Everything is computed instantly on the client, so your data never leaves the page — useful when you're working with sensitive payloads.
Because json formatter works without any sign-up or installation, you can use it as often as you like and it's always available — on desktop or mobile, and even offline.
Explore more developer tools, or try JSON Validator · JSON Minifier.
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JSON Formatter — FAQ
Yes. Invalid JSON shows a clear error message; valid JSON is beautified with your chosen indentation.