JSON Formatter & Validator
Pretty-print or minify JSON and find the exact position of a syntax error.
JSON Formatter & Validator
Pretty-print or minify JSON and find the exact position of a syntax error.
About this tool
Privacy
What you enter is calculated on this device and never sent to a server.
How to use
- Enter numbers or paste text in the box above, and pick any options you need.
- The result appears right away. Generators (UUID, password) make a new one each time you press the button.
- Copy the result and paste it wherever you need it.
Frequently asked questions
Does it show where my JSON is invalid?
Yes. If the JSON has a syntax error it shows the line and column. It can also indent with 2 spaces, 4 spaces or tabs, sort keys and minify.
Is the JSON Formatter & Validator free?
Yes. It is free with no sign-up, no install and no usage limit. It runs right in your browser.
Is what I enter sent to a server?
No. Everything is calculated on your device, and nothing you type is sent or stored. Only the currency converter downloads the latest exchange rates.
Does it work on a phone?
Yes. It works in any modern browser on phones, tablets and computers, so there is no app to install.