JSON Formatter — free online tool
You paste some JSON and it's one long, cramped line. No spacing, no indents, and somewhere in there a missing comma is breaking everything. Reading it like that is a headache, and finding the mistake is worse. We added a free tool that sorts it out — JSON Formatter — right in your browser.
What it does
It cleans up your JSON so you can actually read it: proper indents and spacing, neatly laid out. When you want the opposite, it can minify it down to one compact line to save space. And it checks the JSON as you go, so if something is broken it tells you instead of leaving you guessing.
Nothing leaves your device
Everything happens in your browser. Your JSON is never uploaded to a server and nothing is saved. When you close the tab, it's gone. So even work data or private info is fine to paste in.
How to use it
- Open JSON Formatter and paste your JSON into the box.
- Choose format to make it readable, or minify to shrink it down.
- Copy the result, or fix any error it points out.
It's free with no limit. There are more small tools on the Apps page.