The diff-pdf repository provides a tool for visually comparing two PDFs. Users can download precompiled versions for Windows or install it on Mac using Homebrew or MacPorts. Compiling from sources requires various libraries and dependencies, with specific instructions for different operating systems. The tool allows for viewing PDF differences and identifying translation-only changes. Users can also shift pages relative to each other and zoom in on details using simple GUI features. The repository is not actively developed, but developers are encouraged to make improvements by submitting pull requests. No support is provided for feature requests or fixes.
https://github.com/vslavik/diff-pdf