JSON Tools
Flatten JSON Object
Flatten nested JSON structures into simple key-value pairs using dot notation. Configure delimiters, array notation styles, and output formats. Export as JSON, key-value pairs, or Java properties format.
Updated 2025-12-03
JSON Flatten Tool
Flatten nested JSON objects
Convert deeply nested JSON into flat key-value pairs with dot notation.
Flatten Options
How to use
- Paste or upload your nested JSON structure
- Choose the key delimiter (dot, slash, etc.)
- Select array notation style and output format
- Click "Flatten JSON" to convert to flat key-value pairs
Example: {"a": {"b": 1}} → {"a.b": 1}