How is this different from git diff in the terminal?

The FixTools visual diff shows the same information as git diff but in a clean, browser-based UI with colour-coded highlights. It is easier to read, shareable via copy-paste, and does not require git or a terminal.

Can I use this to review pull request changes?

Yes. Copy the two versions of any file from your PR and paste them into the Diff Checker for a visual review. This is especially useful for reviewing specific files in isolation.

Does this replace GitHub's built-in diff viewer?

It complements it. FixTools is useful when you want to compare specific file versions outside of GitHub, share a diff without giving repository access, or quickly compare pasted snippets.

Can I compare files from different branches?

Yes. Use git show branch:file to get the content from each branch, then paste both into the Diff Checker for comparison.

Does it support unified diff format?

You can paste raw unified diff output, but the tool works best when you paste the two raw file contents rather than the diff notation itself.

Is this useful for code review without a Git platform?

Yes. If you are reviewing code emailed to you or shared via a document, paste both versions into the Diff Checker for an instant visual diff.

Free · Fast · Privacy-first

Git Diff Online — Visual Code Comparison Without the Terminal

The terminal git diff output works, but it's not always the most readable format for reviewing changes — especially when sharing with teammates or reviewing complex multi-file changes. FixTools gives developers a clean, visual diff UI: paste any two versions of a file and get a colour-coded, easy-to-read comparison without opening a terminal.

⚡ Use Tool Now How it works

Cost: Free forever
Sign-up: Not required
Processing: In your browser
Privacy: Files stay local

⚡

Visual diff UI — no terminal commands needed

🔒

Colour-coded additions and deletions

✨

Great for sharing diffs with non-terminal users

Developer Tool

Diff Checker

All processing happens in your browser — your files are never uploaded to any server.

🚀Open Diff Checker

100% Free · No account · Works on any device

How to use this tool

💡

Copy the two versions of a file from your git history (using git show or git checkout) and paste them into the Diff Checker for a visual side-by-side comparison.

How It Works

Step-by-step guide to git diff online — visual code comparison without the terminal:

1
Get your two file versions from git
Run git show <commit-hash>:path/to/file to get each version, or checkout each branch and copy the file content.
2
Open Diff Checker
Navigate to the FixTools Diff Checker.
3
Paste original version
Paste the older or base-branch version into the left panel.
4
Paste updated version
Paste the newer or feature-branch version into the right panel.
5
Review the visual diff
Click Compare for a colour-coded, readable diff you can share or review without the terminal.