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Learn how to find differences between two texts in seconds using our free online text comparison tool. Follow these simple steps.
Paste or type the original text in the left panel and the modified text in the right panel. You can also use the paste buttons for quick input.
Hit the "Compare Texts" button. Our diff engine processes your texts instantly in your browser — no server upload, completely private.
View the results in unified or side-by-side mode. Additions are shown in green, deletions in red, with word-level highlighting for precise change detection.
Paste your original and modified texts below to see the comparison in action.
When comparing long documents, the unified view is often the most useful as it shows changes in context. Use the line numbers to quickly navigate to specific changes. The stats bar at the top gives you an at-a-glance summary of how many lines were added, removed, or left unchanged.
Our word-level highlighting makes it easy to spot changes within lines. If a single word was changed in a line, both the old and new versions will be highlighted inline, so you don't have to compare the entire line manually.
When comparing code, the monospaced font and line numbers make it feel like a native code diff tool. The output format is compatible with standard unified diff/patch format, so you can download it and apply it using command-line tools.
Because everything runs in your browser, you can safely compare sensitive documents, private code, or confidential text without worrying about data leaks. This makes our tool ideal for comparing contracts, legal documents, or proprietary code.