Git Diff Viewer

Paste git diff output to visualize changes with color coding and line numbers. 100% client-side.

Last reviewed: April 2026
Reviewed by , software engineer · last updated April 2026

New to this tool? Click here for instructions

Diff Input
Diff Output
Paste git diff output above to visualize it.

How to Use the Git Diff Viewer

To use the Git Diff Viewer, simply copy your git diff output and paste it into the input area. Choose a view mode: Unified View shows changes in a single column, while Side-by-Side View places old and new versions next to each other. Review the output to see additions highlighted in green, deletions in red, and context lines in gray.

When to Use the Git Diff Viewer

The Git Diff Viewer is essential during code reviews, debugging sessions, and release audits. It helps you spot problematic changes more easily compared to reading raw terminal output. During debugging, it isolates the exact change that introduced a bug. Before releases, it gives you a clear picture of everything that will ship.

How it Works

The Git Diff Viewer parses unified diff format output, which is the standard format produced by git diff, git show, git log -p, and patch files. It renders this output as a color-coded, readable display with line numbers. Unlike a generic diff checker, this tool is specifically designed to parse and visualize pre-existing git diff output, making it ideal for reviewing pull request diffs, email patches, or terminal output in a more readable format.

Tips, Edge Cases, or Limitations

For the best experience, use git diff -U5 to include 5 lines of context around each change. Use git diff --word-diff in your terminal for word-level highlighting, which is useful for prose changes. When reviewing large diffs, use git diff --stat first to see which files changed.

Frequently Asked Questions

A git diff is the output of the git diff command, which shows the differences between two versions of a file or between two branches.
No, your diff data is processed entirely in your browser. This tool does not send any data to a server.
Unified view shows all changes in a single column, while side-by-side view splits the display into two columns, showing the old and new versions next to each other.
Run git diff in your terminal or editor, copy the output, and paste it into the input area of the Git Diff Viewer.
This tool is specifically designed to parse and visualize pre-existing git diff output, making it ideal for reviewing pull request diffs, email patches, or terminal output in a more readable format. A generic diff checker compares two text inputs.