Compare & Merge Studio helps you review two versions of code or text in a private browser workspace. Paste, import, or drop the original and revised files, then compare them side by side or as a unified diff.
The workflow is simple: identify added, removed, and changed lines, search within the diff, choose merge actions, and export a patch or merged result.
Helpful Details
Review Tips
- Start with whitespace ignored when files were reformatted, then turn it off if spacing or indentation may affect the code.
- Use side-by-side view for line-by-line review and unified diff when preparing a patch-style handoff.
- Search the rendered diff for function names, variable names, keys, or configuration values that matter most.
- Use merge mode carefully when both versions contain useful changes that need to be combined.
Common Mistakes to Avoid
- Do not rely only on similarity percentage; a small percentage change can still affect important logic.
- Check deleted lines closely before exporting a patch, especially when comparing configuration or environment files.
- Avoid merging blindly if both sides changed the same section for different reasons.
Privacy and Limitations
This tool is designed for local browser-based comparison, which is useful for quick reviews without uploading code to a separate diff service. Browser storage may save your workspace locally, so clear the content when working on sensitive files on a shared device.
Very large files may use a faster approximate comparison method, so review the output carefully when comparing long generated files, minified code, logs, or large data exports.
Frequently Asked Questions
Does this code compare tool upload my code anywhere?
No. The app is designed as a browser-based workspace, so comparisons run locally in your browser. If you are using a shared device, clear the editors when you are done.
Can I compare files instead of pasting code?
Yes. You can paste code manually, browse for files, or drag and drop files into the Original and Revised panels before running the comparison.
What is the difference between side-by-side view and unified diff view?
Side-by-side view shows the original and revised versions next to each other for easier line-by-line review. Unified diff view shows changes in a patch-style format that is useful for handoff or review.
Can I merge changes with this app?
Yes. Merge mode lets you choose the original version, revised version, or both for changed sections, then copy or download the merged result.
When should I use the ignore whitespace option?
Use ignore whitespace when formatting changes, indentation, or spacing are making the diff noisy. Turn it off when whitespace may affect the code or file behavior.
Can I export the comparison result?
Yes. You can copy or download a unified patch, and you can also copy or download the merged output after making merge choices.