Show HN: OmniDiff is an open-source Rust diff tool for code and other file types

OmniDiff is an AGPLv3 Git difftool that handles 25 programming languages as well as formats such as images, PDFs, archives, cursors, and fonts. Its developer reports diffing C++ files with tens of thousands of lines in under 100 ms on a 2023 ThinkPad T14s; the tool is still in development at version 0.3.0.

The reported speed and broad format support could make OmniDiff useful for teams that regularly review non-code changes, but it is still an early-stage tool. Builders should weigh its coverage against their own file types and workflows; the article provides no independent benchmarks or details on how the different content-specific diffs perform.