A gh CLI extension that opens GitHub's compare view in your browser. It detects forks, resolves your repository's default branch automatically, and supports branch and commit comparisons.

This was built to replace the compare command from the deprecated hub tool.

gh extension install wassimk/gh-compare

The command must be run inside a git repository with a GitHub remote.

Compare the current branch against the repository's default branch.

gh compare

Compare the current branch against another branch.

gh compare other_branch

Compare any two branches using ... (three-dot) notation. This shows only the changes introduced by the second branch, like a pull request diff. Commits added to the first branch after the two diverged are ignored.

gh compare main...my_branch

You can also use .. (two-dot) notation for a direct diff between two branches as they exist right now. Unlike three-dot, this includes the effect of commits on both sides.

gh compare main..my_branch

Compare any two commits.

gh compare 7a67154..205b073

If your repository is a fork with an upstream remote, gh compare automatically generates a cross-fork compare URL. For example, running gh compare on a fork will produce a URL like:

https://github.com/upstream-owner/repo/compare/main...your-user:your-branch

This matches GitHub's compare-across-forks behavior so the diff is shown against the upstream repository.

gh extension upgrade wassimk/gh-compare
gh extension remove gh-compare