▤Free
Deep merge JSON objects
Merge objects recursively; second values replace arrays and leaves.
Merge objects recursively; second values replace arrays and leaves. Merge matching object branches recursively and use the second input for conflicting leaf values. Arrays are replaced as complete values rather than concatenated or merged by index.
How to use
- Enter your text, values, or image.
- Adjust the options and run the tool.
- Copy or download your result.
Worked example
Example input
Input: {"a":{"x":1}}
Second JSON: {"a":{"y":2}}Example result
{
"a": {
"x": 1,
"y": 2
}
}Limitations and details
Both roots must be objects; prototype-related keys and excessive nesting are rejected to avoid unsafe or ambiguous merges.
Inputs and options
- Input
- Text
- Second JSON
- Text
Frequently asked questions
Is this tool free and private?
Yes. All 300 tools are free in this phase. Processing happens in your browser; your input and files are not sent to our servers.