π Diff Checker
Compare text, code, or any content β see differences instantly
Original Text
Changed Text
How to Use Diff Checker
Compare text, code, and documents instantly β spot every difference
β‘ Compare Texts in 3 Simple Steps
Paste Original Text
Enter your original text in the left panel β this is your baseline version for comparison.
Paste Changed Text
Enter your modified version in the right panel. The tool will compare it against the original.
See Differences Instantly
Click Compare or just keep typing β differences appear automatically with color coding: added lines in blue, removed lines in red.
Diff Checker is an essential tool for comparing text, code, or any documents side-by-side. It highlights added, removed, and unchanged lines, making it easy to spot changes between versions.
Common use cases include: code reviews (Git diff alternative), plagiarism detection, document version control, configuration file comparisons, API response validation, and tracking edits in collaborative writing.
Our free diff tool works entirely in your browser β no data is ever sent to any server. Perfect for sensitive code or confidential documents.
β Everything You Need to Know About Diff Checking
A Diff Checker compares two texts line by line and highlights differences. Added lines are shown in blue, removed lines in red, and unchanged lines in gray. It's like Git diff but for any text β code, documents, or configuration files.
Blue lines indicate content that appears in the changed version but not the original (added). Red lines indicate content removed from the original. Gray lines are unchanged.
Absolutely! The Diff Checker works perfectly for code β Python, JavaScript, HTML, CSS, JSON, or any programming language. It's a great alternative to Git diff when you need to quickly compare two code snippets without opening a terminal.
100% safe! Our Diff Checker works entirely in your browser. No text, code, or documents are ever sent to any server. Everything stays on your device β perfect for comparing sensitive information or proprietary code.
The Swap button exchanges the contents of the Original and Changed panels. Useful when you accidentally pasted them in the wrong order β one click and you're good to go.
The footer shows additions (lines only in changed version), deletions (lines only in original), and total changes. Great for quickly understanding the scope of differences between two documents.
100% free β no signup required! No hidden fees, no premium tiers. Compare unlimited texts as many times as you need. We believe essential developer tools should be accessible to everyone.