Free Text Compare

A text compare tool places two versions of a document side by side and highlights every word-level difference between them. Instead of reading through both versions line by line, you see additions in green, removals in red, and unchanged text in its normal state — instantly.

This is essential for anyone who edits text across drafts. Whether you're comparing an original paragraph with a rewritten version, checking what an AI tool changed in your content, or verifying that a colleague's edits preserved your key points, a visual diff eliminates guesswork.

Our text compare tool uses a longest-common-subsequence algorithm to compute word-level diffs with a similarity percentage. It runs entirely in your browser — no text is sent to any server, so confidential documents stay private.

Text comparison is useful anywhere you need to track what changed between two versions of written content.

Most diff tools — like those in Git or VS Code — are designed for code. They compare line by line, which works for programming but produces noisy, unhelpful output for prose. A single reworded sentence shows up as an entire line deletion plus an entire line addition, hiding the actual change.

A text-level comparison tool works at the word level instead. It shows you exactly which words were added, removed, or kept — within the flow of the sentence. This makes it practical for editing, rewriting, and content comparison where changes are granular and meaning-sensitive.

If you're comparing two versions of an essay, blog post, or AI-generated paragraph, a word-level diff gives you the precision that line-level tools can't.