Join JSON Arrays by Key

How to use this tool

1. Paste the input using the example format.
2. Adjust options and run the tool.
3. Inspect and copy or download the result.

Try this example

[{"id":1,"name":"Ada"},{"id":2}]

Accuracy and scope

Runs locally. Input must match the example structure; review results before production use.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.