This is a fast, completely free online text comparison tool designed to help you easily spot the differences between two pieces of text. Whether you are checking document revisions, code changes, or proofreading rewritten articles, you can instantly compare content directly in your browser without downloading or installing any software.

It is very simple. Just paste your original text into the left box and your modified text into the right box. The tool will automatically highlight any added, deleted, or altered content. You can also adjust the comparison settings to check for differences word by word, line by line, or character by character for high precision.

Absolutely secure. Your privacy is fully guaranteed because all text comparison calculations are performed locally within your browser using JavaScript. We do not store, record, or upload any of your input texts to external servers, making it totally safe for sensitive information and business documents.

The Split view displays the original and modified texts side by side, providing a clear visual representation of where changes happened. The Unified view combines both texts into a single, scrolling list, which is particularly useful for reading differences on mobile phones or smaller screens.

You can compare any type of plain text content. This includes essays, contracts, programming source code, JSON data files, and everyday notes. It serves as an essential daily utility for writers, editors, programmers, lawyers, and students to track document changes effortlessly.