How To Check a Previous Version in GitHub (Without Breaking Anything)

Version control can feel a bit mysterious when you’re new to GitHub. You know that “previous versions” of your files are stored somewhere, but how do you actually see them, compare them, or go back if you made a mistake?

This guide walks through the main ways to check previous versions in GitHub, what’s really happening behind the scenes, and how your own setup changes which method makes the most sense.

What “Previous Version” Really Means in GitHub

On GitHub, a previous version of a file isn’t a separate backup copy. Instead, GitHub uses Git, a version control system that tracks changes over time in commits.

A few key ideas:

• A commit is a snapshot of your project at a specific moment.
• Each commit has:
  • A unique hash (an ID like a1b2c3d…)
  • An author
  • A date and time
  • A message (e.g., “Fix typo in README”)
• A branch (like main or master) is just a pointer moving from one commit to the next.

So when you check a previous version, you’re really:

• Looking at an older commit, and/or
• Looking at how a specific file looked in that commit.

Once you see that, you can:

• Just inspect it (for reference)
• Compare it with the current version
• Restore it (by making a new commit that brings it back)

Ways to Check Previous Versions on GitHub

There are two big environments where people do this:

• Directly in the GitHub website (web interface)
• In a local clone using Git commands in your terminal or an app

1. Viewing Previous Versions in the GitHub Web Interface

This is the easiest option if you don’t want to touch command line tools.

A. See the commit history for the whole repository

1. Go to the repository on GitHub.
2. At the top bar, next to the branch name (e.g., main), click “Commits”.
3. You’ll see a list of commits with:
   • Commit message
   • Author
   • Date
   • Short commit hash

From there, you can:

• Click a commit message to see:
  • The project as it looked at that commit
  • The list of changed files
  • The diff (what changed) for each file

B. See the history of a specific file

If you only care about one file (say, index.js):

1. Open the repository on GitHub.
2. Navigate to the file and click it to view.
3. Above the file content, click “History”.

You’ll now see only the commits that touched this file. For each entry, you can:

• Click the commit message to view the changes in that commit.
• Click the file name in that commit to see the old version of the file.

C. Compare a previous version with the current version

From a file’s history:

1. Click a commit in the list.
2. Scroll down to the file you care about.
3. GitHub shows a side-by-side or unified diff, highlighting:
   • Lines removed (usually in red)
   • Lines added (usually in green)

You’re not changing anything yet—you’re just seeing what was different.

D. View the entire project at a past commit

If you want to see the whole repository as it was:

1. Open the repository.
2. Click “Commits”.
3. Click the specific commit hash or message.
4. Use the “Browse files” (or similar) option.

Now you’re effectively browsing a read-only snapshot of your project at that point in time.

2. Checking Previous Versions Locally with Git Commands

If the repository is cloned on your machine, you can do more advanced things with the git command.

A. View commit history

From inside the repo folder in a terminal: