Apply JSON Merge Patch
Apply an RFC 7396 merge patch locally and inspect the result.
Result
Enter your values. Your result will appear here.
How it works
- Inspect the example or enter your own input.
- Check the units and operation, then run the tool.
- Review the result, then copy or download it. Keep a copy of your original data.
Example & practical use
Starting example: Input: {"name":"Mug","stock":3,"old":true} · Merge patch: {"stock":5,"old":null}
Limits and help
Null deletes an object property. Arrays and primitive patch values replace the target; no server is contacted. Runs on your device without uploading input. Maximum 200,000 characters per field; numeric calculations use finite JavaScript numbers unless exact integer/decimal arithmetic is stated.
Your files are yours.
Image and text processing happens in your browser. Your files are not uploaded to our servers.
Troubleshooting
Valid JSON uses double quotes and does not allow comments or trailing commas. Check the error location. Compare large numeric identifiers with the original; represent identifiers as strings when your format permits.