Free Developer Tool
JSON Merge Tool
Combine two or more JSON objects or arrays into a single JSON document.
What is JSON Merge Tool?
The JSON Merge Tool combines multiple JSON documents into one. It is useful for merging configuration files, API responses and datasets while preserving valid JSON syntax.
How to use
- Paste or upload JSON documents.
- Choose the merge strategy if available.
- Merge the JSON.
- Copy or download the result.
Features
- Merge JSON objects
- Merge JSON arrays
- Instant validation
- Copy merged JSON
Common Use Cases
- Combining API responses
- Merging configuration files
- Building larger datasets
- Preparing JSON for applications
Example
Input
First JSON:
{"name":"John"}
Second JSON:
{"age":30}Output
{
"name":"John",
"age":30
}FAQ
Can I merge multiple JSON files?
Yes. The tool supports merging multiple valid JSON documents.
Does it validate the JSON?
Yes. Invalid JSON is detected before merging.
Can arrays be merged?
Yes. Arrays can be combined depending on the selected merge strategy.
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.