Diffinity
Focus on what's new in pull requests
Diffinity highlights copied code in GitHub pull requests, so you can distinguish refactored or moved code from new code at a glance.
Also runs on Edge, Brave, and other Chromium browsers via the Chrome Web Store.
Why it helps
- Reduces cognitive load. Stop spending energy re-reading existing code that hasn't been modified.
- Focus on what's new. With refactors highlighted, your attention can center on the code that actually changes behavior.
- Faster reviews. Reduce the time it takes to review code with increased perception, allowing you to proceed with speed and accuracy.
- Refactor with confidence. Large refactors are much easier to review, with subtle regressions made obvious.
Features
- Two-pass matching: exact, and re-indented
- Theme awareness: purple highlighting for GitHub light and dark themes
- Color blind friendly: highlight colors tuned for GitHub's protanopia & deuteranopia and tritanopia themes
- Fast: analyzes the diff in milliseconds
Private by design
- Runs entirely in your browser; your code never leaves your device
- No tracking and no analytics
- Only acts on GitHub pull-request pages while you're viewing them
Frequently asked questions
How do I install Diffinity?
- Add Diffinity to Chrome or Firefox.
- Open any pull request on github.com.
- Copied, moved, and re-indented code is highlighted.
What does Diffinity highlight?
When you view a PR, Diffinity scans the diff and highlights added lines that match code removed elsewhere in the same PR, so as a reviewer you can focus on what's actually new.
Does Diffinity work with GitHub's color blind themes?
Yes. Diffinity's highlight colors are designed to stand out clearly in GitHub's light and dark themes, including the color vision deficiency themes: protanopia & deuteranopia, and tritanopia.
Does Diffinity collect my code?
For maximum privacy, Diffinity does not collect any code. Each PR diff is fetched directly from GitHub in your browser and analyzed locally. Your code is never sent to any third-party server.
Which browsers does Diffinity support?
Google Chrome and Mozilla Firefox, plus Chromium-based browsers such as Microsoft Edge and Brave.