Free Developer Tool
JSON Flattener
Convert nested JSON objects into a flat key-value structure.
What is JSON Flattener?
The JSON Flattener converts deeply nested JSON into flat key-value pairs, making it easier to analyze, export and process data.
How to use
- Paste your JSON.
- Flatten the structure.
- Copy the flattened result.
Features
- Flatten nested objects
- Support nested arrays
- Instant conversion
- Copy output
Common Use Cases
- Preparing CSV exports
- Simplifying API responses
- Data analysis
- Debugging nested structures
Example
Input
{
"user":{
"name":"John"
}
}Output
{
"user.name":"John"
}FAQ
Does it flatten arrays?
Yes. Nested arrays are also flattened.
Will the output remain valid JSON?
Yes. The flattened result is valid JSON.
Can I restore the original structure?
Yes. Use the JSON Unflattener.
Missing a feature?
If this tool doesn't cover your use case or is missing functionality, please let me know through the Contact page.
New improvements and features are added based on user feedback.