JSON Flatten
Flatten nested JSON into dot-notation path format to quickly view deep data structures.
How to Use
- Paste or type nested JSON data into the left input box.
- Click the "Flatten" button to expand the nested structure into dot-notation path format.
- The flattened result appears on the right, with each key using its complete dot-separated path.
- Click "Copy Result" to quickly copy the flattened JSON.
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About JSON Flatten
JSON Flatten is a free online tool that converts deeply nested JSON data into flattened dot-notation path format. When working with complex API responses, configuration files, or database exports, nested structures can be difficult to browse and analyze quickly.
Through flattening, each value is represented with its complete key path (e.g., "user.address.city"), letting you see all data fields at a glance. Flattened data is also ideal for importing into spreadsheets, log analysis tools, or data processing pipelines. Supports arbitrary nesting depths with automatic array and object handling.