Free Online Diff Checker - No Signup Required
Compare two texts and instantly see the differences highlighted. Perfect for code reviews, document comparisons, and version tracking. 100% free - no registration needed.
Original Text
Modified Text
Differences will appear here after comparison...
Features
Line-by-Line Comparison
See exactly which lines were added, removed, or changed
Side-by-Side View
Compare original and modified text in a clear split view
No Registration
100% free - no signup or account required
Inline View Mode
View all differences in a single unified format
Copy & Download
Export your diff results as unified diff format
Privacy First
All processing happens locally in your browser
Best Free Online Diff Checker - No Signup Required
Welcome to the most powerful diff checker available online - completely free with no signup required. Our professional text comparison tool instantly highlights differences between two texts, making it perfect for code reviews, document comparisons, and version tracking.
Key Features
📊 View Modes
- Side-by-Side: Compare original and modified text in parallel columns
- Inline: See all changes in a single unified diff format
💻 Perfect for Developers
- Code Reviews: Quickly spot changes in code
- Config Files: Compare configuration changes
- JSON/XML: Diff structured data files
✨ Difference Highlighting
- Added Lines: Shown in green with + indicator
- Removed Lines: Shown in red with - indicator
- Unchanged: Clean display without highlighting
📥 Export Options
- Copy: One-click copy as unified diff format
- Download: Save diff as a text file
- Swap: Quickly swap original and modified texts
How to Use Our Diff Checker
Paste Original Text
Enter your original text in the left panel
Paste Modified Text
Enter your modified text in the right panel
Compare & Review
Click Compare to see all differences highlighted
Frequently Asked Questions (FAQ)
Is this diff checker free?
Yes, our diff checker is completely free with no signup required. All features are available without any limitations.
What view modes are supported?
We support two view modes: Side-by-Side view shows the original and modified text in separate columns, and Inline view shows all differences in a single unified format.
Is my text data safe?
Absolutely. All text processing happens locally in your browser. We never store, transmit, or access your data.
Can I compare code files?
Yes! Our diff checker works great for comparing code, configuration files, JSON, and any other text content.
Perfect for Developers, Writers, and Teams
Whether you're reviewing code changes, comparing document versions, or tracking configuration updates, our diff checker provides a clear, visual representation of all differences. The side-by-side view makes it easy to spot changes at a glance.
Try our free diff checker today - the fastest way to compare texts online.