Introduction

Visual Studio Code can compare branches either through its built-in Git commands or through extensions such as GitLens. The important part is understanding what you want to compare: the full branch diff, the history between two refs, or a specific file’s changes across branches.

Compare Branches with the Command Palette

The built-in Git integration exposes branch comparison commands through the Command Palette.

Git: Compare with Branch...

A practical workflow is:

1. open the repository folder in VS Code
2. open the Command Palette
3. run Git: Compare with Branch...
4. choose the branch you want to compare against

VS Code then shows the differences between your current branch and the selected branch.

Use the Source Control View for File-Level Review

Once the comparison is active, the Source Control view and diff editors help you inspect file-by-file changes. This is useful when you want a review-oriented view rather than a raw Git command output.

For many day-to-day workflows, this is enough:

• compare your feature branch with main
• inspect changed files
• open side-by-side diffs
• decide what is ready to merge or rework

Terminal Fallback Is Still Useful

Even inside VS Code, the integrated terminal is often the fastest way to answer branch-diff questions precisely.

git diff main..feature-branch

or from your current branch:

git diff main...

Those commands help when you want exact Git semantics rather than the editor’s UI abstraction. VS Code and Git are complementary here, not competing tools.

Compare Histories, Not Just File Content

Sometimes the real question is not “what lines changed?” but “which commits differ?” In that case, use log-oriented commands or branch history views.

git log --oneline main..feature-branch

That tells you which commits exist on one branch and not the other. It is often more helpful before a rebase or merge than a giant file diff.

GitLens Can Make Branch Comparison Easier

If you use GitLens, it provides richer branch comparison UI, history browsing, and ref-picking. That is helpful for larger repositories or teams that spend a lot of time reviewing history inside the editor.

Still, the core idea does not change: you are comparing Git refs, not invoking a special VS Code-only concept.

Pick the Right Comparison Target

A common source of confusion is comparing the wrong refs.

• compare your branch with main before opening a pull request
• compare with origin/main if you care about the remote state
• compare with a tag if you want release-to-release differences

Being precise about the comparison target matters more than the UI you use.

Common Pitfalls

A common mistake is comparing your local branch to an outdated local copy of main instead of the latest remote-tracking branch. Another is expecting branch comparison to show only commits unique to one side without understanding the difference between two-dot and three-dot Git diff semantics. Developers also sometimes install an extension before learning the built-in VS Code commands, even though the core editor may already cover the comparison they need.

Summary

• VS Code can compare branches through built-in Git commands such as Git: Compare with Branch....
• The integrated terminal remains useful for exact git diff and git log comparisons.
• Compare against the correct ref, such as main, origin/main, or a tag.
• Use file diffs for code review and commit history views for integration planning.
• Extensions like GitLens can improve the UI, but the underlying comparison is still standard Git ref comparison.