What is Git LFS: Large File Storage for Git Explained

Git LFS (Large File Storage) is an extension for Git that helps manage large files by storing them outside the main repository. It replaces big files with small pointers inside Git, keeping the repository fast and lightweight.

How It Works

Imagine your Git repository is like a photo album. Normally, every photo (file) is stored directly inside the album, making it heavy and slow to carry if the photos are very large. Git LFS works like a special photo album that keeps only small notes about each photo inside the album, while the actual large photos are stored safely in a separate box.

When you clone or pull the repository, Git LFS fetches the real large files from this separate storage automatically. This way, your main Git repository stays small and fast, but you still have access to all your big files when you need them.

Example

This example shows how to track a large file type with Git LFS and push it to a remote repository.

bash

git lfs install
git lfs track "*.psd"
git add .gitattributes
# Add your large file
git add design.psd
git commit -m "Add large design file with Git LFS"
git push origin main

Output

Git LFS initialized.
Tracking *.psd
[main abc1234] Add large design file with Git LFS
 2 files changed, 1 insertion(+)
To origin/main
   abc1233..abc1234  main -> main

When to Use

Use Git LFS when your project includes large files like images, videos, audio, or design files that slow down your Git operations. It is especially helpful in teams where many people clone and work with the repository often.

For example, game developers, graphic designers, and video editors use Git LFS to keep their repositories manageable while still versioning big assets. Without Git LFS, these files would make cloning and pushing changes very slow and consume a lot of storage.

Key Points

• Git LFS stores large files outside the main Git repository.
• It replaces large files with small pointer files inside Git.
• Helps keep repositories fast and lightweight.
• Automatically downloads large files when needed.
• Ideal for projects with big media or binary files.

Key Takeaways

Git LFS manages large files by storing them outside the main Git repository.

It keeps your repository fast by replacing big files with small pointers.

Use Git LFS for projects with large media or binary files to improve performance.

Git LFS automatically handles downloading large files during clone or pull.

It is essential for teams working with big assets to avoid slow Git operations.