Summarize this article with:
Two files. Hundreds of lines. Spot the difference.
Sounds tedious, right? It doesn’t have to be.
Learning how to compare two files in VSCode turns a frustrating task into a 30-second workflow. The built-in diff editor highlights every added line, removed line, and changed character automatically.
No extensions required. No external tools.
Whether you’re reviewing code changes, debugging merge conflicts, or tracking file versions, Visual Studio Code handles it natively.
This guide covers five methods: Explorer pane comparison, Command Palette shortcuts, command line diff, Git integration, and comparing unsaved content.
Each method takes under two minutes to master.
How to Compare Two Files in VSCode
Comparing two files in VSCode is the process of viewing differences between two documents side by side using the built-in diff editor.
The diff tool highlights added lines, removed lines, and changed characters in real time.
Developers need this feature during code reviews, when merging branches, debugging issues, or tracking changes across file versions.
If you’re new to this web development IDE, understanding what VSCode is will help you get started faster.
This guide covers 5 methods requiring 2-3 minutes and basic familiarity with the Visual Studio Code interface.
Prerequisites
Before you start, make sure you have these ready:
- Visual Studio Code version 1.80 or later installed
- Two files saved on your local disk
- Basic knowledge of the Explorer pane and Command Palette
- Git installed (optional, for version control comparisons)
Time estimate: 2 minutes per method.
Works on Windows 10/11, macOS, and Linux.
Step 1: How Do You Compare Two Files Using the File Explorer?
Right-click the first file in the Explorer pane, select Select for Compare, then right-click the second file and choose Compare with Selected to open a side-by-side diff view showing all differences highlighted.
Action
- Explorer Pane > Right-click first file > Select for Compare
- Right-click second file > Compare with Selected
- Expected result: Diff editor tab opens with both files
Purpose
Best method when both files are visible in your workspace folder.
No keyboard shortcuts needed. Pure mouse workflow.
Step 2: How Do You Compare Two Files Using the Command Palette?
Open the Command Palette with Ctrl+Shift+P (Windows/Linux) or Cmd+Shift+P (Mac), type File: Compare Active File With, and select your second file from the picker to launch the diff panel.
Action
- Open Command Palette:
Ctrl+Shift+P(Windows/Linux) orCmd+Shift+P(Mac) - Type:
File: Compare Active File With... - Select the second file from the file picker
Purpose
Faster than mouse navigation when you already have one file open.
Works well for comparing files across different folders in your project. This approach fits naturally into a structured code review process.
Step 3: How Do You Compare Files Using the Command Line?
Run code --diff path/to/file1 path/to/file2 in your terminal to launch VSCode directly into the diff view, perfect for scripting and automation workflows.
First, learn how to open VSCode from terminal if you haven’t set up the command line tool yet.
Action
- Open terminal or command prompt
- Run:
code --diff path/to/file1 path/to/file2 - VSCode launches with the diff editor already open
Purpose
Ideal for automation scripts, build pipelines, and CI/CD workflows.
Teams using source control management can integrate this command into their tooling. The command line method supports continuous integration setups where file comparison happens automatically.
Step 4: How Do You Read the Diff View Output?
The diff editor uses color-coded highlighting to show added lines (green background), removed lines (red background), and changed characters (intense red/green within light backgrounds) between your two files.
Action
- Green background: Lines added in the second file (right side)
- Red background: Lines removed from the first file (left side)
- Light red/green with intense sections: Individual character changes within a line
Purpose
Understanding the color coding speeds up file review significantly.
You’ll spot differences instantly instead of scanning line by line.
Step 5: How Do You Navigate Between Differences?
Use the arrow icons in the diff editor toolbar or keyboard shortcuts Alt+F5 (next difference) and Shift+Alt+F5 (previous difference) to jump between changes without scrolling manually.
Action
- Click arrow icons in the diff panel toolbar
- Next difference:
Alt+F5 - Previous difference:
Shift+Alt+F5
Purpose
Critical for large files with hundreds of lines.
Jumping between changes beats scrolling through unchanged code. Learn more VSCode keyboard shortcuts to speed up your workflow.
Step 6: How Do You Compare Unsaved Content?
Open the Command Palette, select File: Compare New Untitled Text Files, then paste content into each panel to compare clipboard text, code snippets, or any content without saving files first.
Action
- Command Palette:
Ctrl+Shift+P - Select:
File: Compare New Untitled Text Files - Paste content into each untitled editor panel
Purpose
Perfect for quick snippet comparisons or clipboard content checks.
No need to create temporary files on disk.
Step 7: How Do You Compare Files with Git in VSCode?
Click the Source Control icon in the Activity Bar (Ctrl+Shift+G), then select any modified file under the Changes section to automatically open a diff view comparing your working copy against the HEAD revision.
Action
- Click Source Control icon in Activity Bar or press
Ctrl+Shift+G - Locate modified file under Changes section
- Click the file to open Git diff view
Purpose
Fastest method for version-controlled projects using source control.
See exactly what changed since your last commit. If you haven’t connected your repo yet, check how to connect VSCode to GitHub.
Verification
Confirm your comparison loaded correctly:
- Diff editor shows two panes (left: original, right: modified)
- File paths display in the tab title separated by a comparison symbol
- Color-coded highlights appear where differences exist
- Navigation arrows are active in the toolbar
No highlights visible? The files are identical.
Troubleshooting
Issue: Select for Compare Option Missing
Solution: Verify the file is text-based (not binary) and saved to disk before comparing.
Binary files like images or executables don’t support the built-in diff tool.
Issue: Diff View Shows No Differences
Solution: Check for invisible whitespace characters using View > Render Whitespace.
You can also toggle this through the Command Palette: Toggle Render Whitespace.
Issue: Command Line Diff Not Opening VSCode
Solution: Run Shell Command: Install 'code' command in PATH from Command Palette.
Restart your terminal after installation. This is a common issue on macOS.
Issue: Git Diff Not Showing Changes
Solution: Ensure your file is tracked by Git and you’ve made changes since the last commit.
Untracked files won’t appear in the Source Control panel.
Alternative Methods
Built-in Method (This Guide)
- Time: 30 seconds
- Complexity: Basic
- Best for: Quick comparisons of two specific files
Git Timeline Method
- Time: 45 seconds
- Complexity: Intermediate
- Best for: Comparing file against historical versions in Timeline View
Extension Method (GitLens, Partial Diff)
- Time: 1 minute (after installation)
- Complexity: Intermediate
- Best for: Advanced comparison features, inline diffs, compare folders
Choose built-in method for simple two-file comparisons.
Choose Git Timeline when comparing file revisions within a repository. Choose extensions when you need folder comparison or enhanced diff visualization.
Related Processes
Once you’ve mastered file comparison, explore these related workflows:
- How to format code in VSCode before comparing files
- How to comment in VSCode when reviewing changes
- How to indent multiple lines for cleaner diffs
- How to open settings.json to customize diff editor behavior
Understanding file comparison is part of broader software development workflows.
Teams practicing test-driven development use diff tools constantly when checking test outputs against expected results.
FAQ on How To Compare Two Files In VSCode
What is the keyboard shortcut to compare two files in VSCode?
There’s no default keyboard shortcut for file comparison. Use Ctrl+Shift+P to open the Command Palette, then type “Compare Active File With” to select your second file. You can also assign a custom keybinding through Preferences.
Can I compare files from different folders in VSCode?
Yes. Open both files from any location in your workspace. Right-click the first tab, select Select for Compare, then right-click the second tab and choose Compare with Selected. Folder location doesn’t matter.
How do I compare a file with its previous Git version?
Click the Source Control icon in the Activity Bar. Select any modified file under Changes to see the Git diff against HEAD. For older commits, use the Timeline View in the Explorer pane.
Does VSCode have a built-in diff tool?
Yes. Visual Studio Code includes a native diff editor that shows side-by-side comparisons with color-coded highlighting. Green indicates added lines, red shows removed lines, and changed characters get highlighted within lines.
Can I edit files while comparing them in VSCode?
Yes. The diff view is fully editable. Make changes directly in either panel and save normally with Ctrl+S. Your edits update the original files. This makes merging changes quick during code refactoring sessions.
How do I compare two files using the command line?
Run code --diff file1.txt file2.txt in your terminal. VSCode launches directly into the comparison view. Install the shell command first through Command Palette if the code command isn’t recognized.
What extensions improve file comparison in VSCode?
GitLens adds inline blame annotations and history comparisons. Partial Diff compares text selections. Compare Folders handles directory-level diffs. SemanticDiff provides programming language-aware comparisons that ignore formatting differences.
Can I compare unsaved text or clipboard content?
Yes. Open Command Palette and select “File: Compare New Untitled Text Files.” Two blank editors open side by side. Paste your content into each panel to see differences instantly without creating files.
Why does my diff view show no differences?
Check for invisible whitespace or encoding differences. Enable View > Render Whitespace to reveal hidden characters. Files might also have different line endings (CRLF vs LF). The status bar shows the current encoding.
How do I navigate between changes in the diff view?
Click the arrow icons in the diff editor toolbar or use Alt+F5 for next difference and Shift+Alt+F5 for previous. These shortcuts jump directly to changed sections without manual scrolling.
Conclusion
Knowing how to compare two files in VSCode saves hours of manual code review.
The built-in file diff viewer handles everything from quick text comparisons to complex Git history analysis.
You now have five methods: Explorer pane selection, Command Palette commands, terminal shortcuts, Source Control integration, and unsaved content comparison.
Pick the one that fits your workflow.
The side-by-side view with color-coded highlighting makes spotting differences instant. Navigation shortcuts like Alt+F5` let you jump between changes without scrolling.
Extensions like GitLens and Partial Diff add even more power when you need it.
Start with the Select for Compare method. It works for most situations and requires zero setup.
Your file comparison workflow just got faster.
With over a decade in the tech field, Bogdan blends technical expertise with insights on business innovation in technology.
A regular contributor to TMS Outsource's blog, where you'll find sharp analyses on software development, tech business strategies, and global tech dynamics.
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