Let monkey 
format that json
100% free · No sign-up · Fully private
How it works
01
Paste your JSON
Paste raw or minified JSON into the input box. No file upload needed.
02
Format or minify
toolmonkey parses your JSON and pretty-prints it with your chosen indent, or strips it down to a single line.
03
Copy or download
Copy the result to your clipboard or download it as a .json file. Everything happens on your device.
Why toolmonkey
On-device.
JSON parsing and formatting happen entirely in your browser. toolmonkey's servers never see your data.
Instant.
No round trip to a server. Format or minify JSON of any size the moment you click.
No account.
Open the page and go. No email, no trial, no subscription to manage.
Frequently asked questions
Is this really free?
Yes, completely. toolmonkey formats JSON with no subscription, no trial, and no catch. It's supported by ads, not fees.
Does my JSON get uploaded to a server?
No. Formatting runs entirely in your browser using JavaScript's built-in JSON parser. Your data never touches toolmonkey's servers.
What happens if my JSON is invalid?
toolmonkey shows you the exact parse error so you can find and fix the problem quickly.
Can I minify JSON too?
Yes. Use the Minify button to collapse formatted JSON down to a single compact line.
Is there a size limit?
No hard limit — the tool runs entirely in your browser's memory, so very large files depend on your device's available memory.
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