JSON Formatter & Beautifier
Paste or drop a JSON file to format it with proper indentation, syntax highlighting, and an interactive tree view.
Input
Output
How to Use the JSON Formatter
Simply paste your JSON into the input panel on the left. The formatter will automatically beautify your JSON with proper indentation and syntax highlighting in real time. You can also drag and drop a .json file directly onto the input area.
Features
- Syntax highlighting -- keys, strings, numbers, booleans, and null values are each colored differently for easy scanning.
- Collapsible tree view -- switch to the Tree View tab to explore your JSON structure interactively. Click any node to expand or collapse it.
- Configurable indentation -- choose between 2 spaces, 4 spaces, or tabs.
- Error detection -- if your JSON is invalid, you will see a clear error message with the line and position of the problem.
- One-click copy -- copy the formatted output to your clipboard instantly.
What Is JSON Formatting?
JSON formatting (also called "beautifying" or "pretty-printing") takes compact or minified JSON and adds consistent indentation and line breaks to make it human-readable. This is essential when debugging API responses, reading configuration files, or reviewing data structures.
Tips
- Use the Tree View to navigate large nested JSON objects quickly.
- If your JSON is invalid, the error message will point you to the exact location of the problem.
- Formatted JSON is for readability only -- use the JSON Minifier when you need compact JSON for production.