What is the Text Diff tool?

It is a free online diff tool that visually displays differences between two texts with color-coded highlighting.

Is it free? Is my data safe?

Completely free. Text comparison processing happens entirely in your browser, and no data is sent externally.

Can I use it for code comparison?

Yes. It is great for code reviews, checking configuration file changes, identifying edits in documents, and any other text comparison task.

Text Diff

An online diff tool that visually highlights differences between two texts using color-coded markup for additions, deletions, and changes. It performs fast line-by-line comparison even with large documents and code files. Widely used by developers for code reviews, editors for tracking document revisions, and teams verifying configuration file changes.

Original

Modified

Enter text in both text areas to see the differences in real time.

Practical Guide

Tools for everyday text work such as counting, replacing, comparing, reading aloud, and converting tables. Useful for draft review, log cleanup, documentation prep, and small editorial tasks.

When this tool is useful

Text Diff helps with common Text Tools tasks that require quick checking, conversion, or creation. It supports workflows such as Color-coded highlighting of text differences, Visually confirm additions, deletions, and changes per line without forcing users to switch pages or apps.

Processing and privacy

Your input is processed in the browser and is not designed to be sent to a server just to use the tool. This makes it suitable for temporary checks, draft work, and pre-publication cleanup.

Workflow tip

After checking the result, use the related tools and same-category links near the bottom of the page to continue the surrounding task. Frequently used tools also appear in the Recently Used section.