JSON Formatter
Pretty-print and validate JSON online, instantly.
Embed this tool on your site
Free — a link back to LoopStook is included.
What is the JSON Formatter?
Format and validate JSON online for free. Paste minified or messy JSON and get clean, indented output — invalid JSON is flagged with a clear error.
How to use the JSON Formatter
- 1
Add your text
Paste or type your content into the JSON Formatter.
- 2
Set any options
Adjust the available options to fit exactly what you need.
- 3
Copy or download the result
The output is generated instantly in your browser — copy it or download it. Nothing is uploaded to a server.
Frequently asked questions
Is the json formatter free?
Yes — it runs entirely in your browser, so it's free, private, and instant. Nothing is uploaded.
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