gdiff 0.2.0

Web-based side-by-side git diff viewer

gdiff

A web-based side-by-side git diff viewer. Generates a self-contained HTML page with syntax highlighting and opens it in your browser.

No more squinting at terminal diffs - see your changes clearly, side by side.

Installation

pip install gdiff

For syntax highlighting (recommended):

pip install gdiff[highlight]

Quick Start

gdiff path/to/file.py

This runs git diff on the file, generates an HTML page, and opens it in your browser.

Usage

# Diff a specific file
gdiff path/to/file.py

# Staged changes
gdiff --staged path/to/file.py

# All unstaged changes
gdiff

# Pipe mode
git diff | gdiff

# Save without opening browser
gdiff --no-open -o diff.html

# Compare branches/commits
gdiff main..feature -- path/to/file.py

# Check version
gdiff --version

Features

• Side-by-side view - old code on the left, new code on the right
• Syntax highlighting - 500+ languages via Pygments
• Dark theme - GitHub-dark inspired, easy on the eyes
• Line numbers - on both sides for quick reference
• File navigation - sticky header with clickable jump links
• Keyboard navigation - j/k to jump between files
• Multi-file support - view all changed files in one page
• Zero config - works out of the box, no setup needed
• Fully offline - self-contained HTML, no external dependencies
• Lightweight - pure Python, no heavy frameworks

How It Works

1. Runs git diff (or reads piped input)
2. Parses the unified diff into structured data
3. Generates a self-contained HTML file with inline CSS/JS
4. Opens it in your default browser

The generated HTML has no external dependencies - it works fully offline.

Requirements

• Python 3.8+
• Git (must be available in PATH)
• Pygments (optional, for syntax highlighting)

Contributing

Contributions are welcome! Feel free to open an issue or submit a pull request.

License

MIT - Younes Boukdir