Online Tool Store
JSON Config Merge Tool
Merge two JSON config objects with overwrite, deep merge, and array handling choices plus a diff-style preview.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
CONFIG MERGE
MERGED OUTPUT
How to use JSON Config Merge Tool
- Paste base and override objects, choose merge and array behavior, then review conflicts and output.
- Review the live result and refine the controls for your scenario.
- Use the output as a focused browser aid; nothing is uploaded for processing.
FAQ
Does JSON Config Merge Tool run locally?
Yes. Inputs, selected files, previews, and calculations stay in this browser and are not uploaded for processing.
Can I replace the sample input?
Yes. A realistic sample appears on load, and the controls let you provide and clear your own input.
How should I use the result?
Use it as a practical preview, estimate, or reference, and verify important decisions against an authoritative source.
How we compare
| Capability | Online Tool Store | Manual code editing | CLI merge utility |
|---|---|---|---|
| Base, override, and merged panes | Included | Possible | Output only |
| Deep merge and array policy switches | Included | Manual | Configurable |
| Visible override count and JSON errors | Included | Manual review | Varies |
Merge two JSON config objects with overwrite, deep merge, and array handling choices plus a diff-style preview. Choose the specialist alternative when you need certified, collaborative, or production-grade output.