JSON Formatter & Validator

Paste messy JSON to format it with clean indentation, minify it to save space, or find syntax errors with a readable message. Runs in your browser, so your data stays private.

About this tool

Paste JSON to beautify it with indentation, minify it into one line, or check whether it is valid. If the JSON is broken, the error message points to the problem so you can fix missing commas, quotes or brackets quickly. Developers use it for APIs, config files and debugging.

How to use the JSON Formatter & Validator

Paste your JSON.
Click Format or Minify.
Copy the result, or fix the error shown.

Why use this tool?

It is 100% free, needs no signup, gives instant results and works on desktop, tablet and mobile. Your data is processed in your browser and is not stored on our servers.