Diff Checker — Free Online
Use Diff Checker online for free. Fast, secure processing — files are deleted immediately after download. No sign-up required.
Original
Modified
Options
Diff Results
− Removed: 2+ Added: 2
1- function hello() {
1+ function hello(name) {
2- console.log('Hello');
2+ console.log('Hello ' + name);
3 }
💡 How It Works
- Red/Pink lines: removed from the original
- Green lines: added in the modified version
- Gray lines: unchanged content
- Check "Ignore whitespace" to focus on content changes
Frequently Asked Questions about Diff Checker
- Is Diff Checker completely free to use?
- Yes, Diff Checker is 100% free with no sign-up, no watermarks, and no usage limits.
- Are my uploaded files safe and private?
- Yes. Files are uploaded over HTTPS, processed securely on our servers, and permanently deleted immediately after your download. We never store, view, or share your files.
- What is the maximum file size?
- You can upload files up to 10 MB. For larger files, consider compressing or splitting them first.
- Does it handle large code or data files?
- Yes, the tool handles files and pastes of any size. Very large inputs may take a moment to process.
- Does Diff Checker work on mobile and tablet?
- Yes, Diff Checker is fully responsive and works in all modern browsers on desktop, tablet, and mobile.
Files are processed securely and permanently deleted after download. Never stored or shared.