Diff Viewer

Compare two texts and highlight differences

Original

Modified

About Diff Viewer

Diff Viewer is a free online tool that allows you to compare two text files or code snippets side-by-side to identify differences instantly. It highlights additions, deletions, and modifications in a clear visual format, making it perfect for developers, writers, and anyone who needs to track changes between document versions.

How to use Diff Viewer

1Paste or upload your first text/code snippet into the left panel
2Paste or upload your second text/code snippet into the right panel
3Click the 'Compare' button to generate the diff analysis
4Review the highlighted differences where green shows additions and red shows deletions

Frequently Asked Questions

Is Diff Viewer completely free to use?

Yes, Diff Viewer is 100% free with no registration required. You can compare unlimited files without any hidden charges or premium features.

What file types does Diff Viewer support?

Diff Viewer supports plain text, code files (JavaScript, Python, HTML, CSS, etc.), JSON, XML, and most text-based formats.

Is my data secure when using Diff Viewer?

All comparisons are processed locally in your browser. Your data is never stored on our servers and is completely private.

Can I download or save the diff results?

Yes, you can copy the results to your clipboard or export them as a text file for documentation purposes.

Tips and Tricks

✓Use the 'Ignore Whitespace' option when comparing code to focus on actual logic changes rather than formatting differences
✓For large files, consider splitting them into smaller sections for clearer and more manageable comparisons
✓Use line-by-line diff mode for detailed analysis of specific changes in programming projects
✓Bookmark Diff Viewer for quick access during your development workflow and code review processes