Text Diff Checker

Compare two text documents and instantly visualize the differences with our free online diff checker. Perfect for developers, writers, and content creators to track changes between versions.

Original Text

Modified Text

Why Use Our Text Diff Checker?

Real-time Comparison

See differences highlighted instantly as you type with our real-time diff engine.

Privacy First

Your data never leaves your browser. All processing happens locally.

No Limits

Compare texts of any length with no restrictions or sign-ups required.

Fully Responsive

Works perfectly on all devices - desktop, tablet, and mobile.

Frequently Asked Questions

A Text Diff Checker is a tool that compares two blocks of text and highlights the differences between them. It's commonly used by developers to compare code versions, writers to track document changes, and content creators to identify modifications between text revisions.
Absolutely! All text comparison happens directly in your browser. Your data never leaves your computer and is not stored on any server. This ensures complete privacy and security for your sensitive documents.
When you enable real-time mode, our tool continuously monitors both text areas. Any changes you make trigger an instant comparison, updating the results as you type. This feature uses efficient algorithms to ensure smooth performance even with large texts.
Yes! Our diff checker can handle documents of any size. However, for extremely large texts (over 100,000 characters), you might experience slight delays as the browser processes the comparison.
Green highlights show text added in the modified version
Red highlights show text removed from the original version