Merge JSON objects
Combine two JSON objects; fields from the second replace matching top-level fields.
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Merge JSON objects — workspace
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How to use: Merge JSON objects
Start with the example, or replace it with your own values.
Review Text or data, Second input, then select “Get result”.
Read the result, then copy or download it. Edit any input to try again.
What you can do
- Combine two JSON objects; fields from the second replace matching top-level fields.
What you get
- A result you can review, copy or download. Numeric tools show labeled calculations; text tools show the transformed output.
What you need
- Text or data
- Enter or paste your value, or start with the example.
- Second input
- Enter or paste your value, or start with the example.
Try an example
- Text or data
{"name":"Sara","city":"Riyadh"}- Second input
{"city":"Jeddah","active":true}
Good to know
- JSON numbers use JavaScript precision. Keep long IDs in quotes. Flattening uses JSON Pointer paths and keeps arrays intact; merging replaces top-level fields.
Your work stays on your device
Your files and entered values are processed in your browser and are not uploaded for processing. The website and any required processing engines still download from the site.
Questions & answers
Is Merge JSON objects free?
Yes. Merge JSON objects is free to use and does not require an account.
Are my files or entered values uploaded?
Your files and entered values are processed in your browser and are not uploaded for processing. The website and any required processing engines still download from the site.
What result can I save?
A result you can review, copy or download. Numeric tools show labeled calculations; text tools show the transformed output.
What should I check before using the result?
JSON numbers use JavaScript precision. Keep long IDs in quotes. Flattening uses JSON Pointer paths and keeps arrays intact; merging replaces top-level fields.