JSON Formatter
How to Use
Type or paste JSON data into the textarea to see it automatically formatted. Choose between 2-space or 4-space indentation. If your JSON contains syntax errors, an error message will appear. Use the copy button to copy the formatted output to your clipboard.
What Is JSON
JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate. It is widely used in web APIs, configuration files, and data storage. Pretty-printed JSON with proper indentation makes nested structures visually clear, which is invaluable for debugging and code review.
Privacy
All JSON processing happens entirely in your browser. Your data is never sent to a server, stored, or logged. You can safely paste sensitive or proprietary data.