Spot the Differences Instantly
Whether you are comparing two versions of a code file, reviewing edits on a legal document, or trying to find a missing semicolon, finding small changes manually is tedious. Our Online Diff Viewer highlights insertions, deletions, and modifications instantly in a side-by-side or unified view.
Essential for Code and Content Review
- Syntax Highlighting: Supports syntax highlighting for major programming languages, making code reviews much easier to read.
- Side-by-Side vs. Unified: Choose how you want to view the changes. Side-by-side is great for wide screens, while the inline unified view is perfect for mobile.
- Ignore Whitespace: Toggle the option to ignore trailing whitespace or line-break differences so you can focus strictly on logic changes.
How to Use This Tool
- Upload or Input Data: Select your file or paste your data directly into the tool interface. Everything remains on your device.
- Configure & Process: Adjust any optional settings if necessary. The tool will process your data instantly inside your browser.
- Download Result: Preview the output and click the download or copy button to save your final results.
Frequently Asked Questions
Is my confidential code sent to a server?
Absolutely not. The diffing algorithm runs entirely in your local browser using JavaScript. No data is transmitted.
Can I compare large files?
Yes, the tool is optimized to handle large documents and code files, though pasting files larger than several megabytes may temporarily slow down the browser.
How does it handle added/removed lines?
Just like Git, added lines are highlighted in green, and removed lines are highlighted in red. Modified lines will show the exact character differences highlighted.