JSON Formatter & Validator
Beautify, minify, and validate JSON instantly. Find errors with the exact line and column, then copy or download clean JSON.
How to Format JSON
Paste your JSON into the Input box and click Format. The tool checks your JSON, shows any errors with the exact line and column, and outputs clean, indented JSON you can copy or download. Use Minify to remove all spaces and line breaks when you need the smallest file size. Tip: press Ctrl + Enter to format quickly.
Frequently Asked Questions
What is JSON?
JSON (JavaScript Object Notation) is a lightweight format for storing and sharing data. It is used by most APIs, apps, and AI tools because it is easy for both people and computers to read.
Why is my JSON invalid?
The most common causes are missing commas, trailing commas after the last item, single quotes instead of double quotes, and keys without quotes. The error message above points to where the problem starts.
Is my data safe?
Yes. Your JSON is processed entirely in your browser and is never uploaded to our servers.
What is the difference between format and minify?
Format adds indentation and line breaks to make JSON easy to read. Minify removes them to make the file as small as possible for faster loading.
Want More Free AI Tools and Tips?
Get one practical AI tip every week, plus new free tools as soon as we launch them.
Subscribe for Free →