Text Diff Tool
Result
Text Diff Tool
This text diff tool compares two blocks of text side by side and highlights exactly what changed between them. It marks the words or lines that were added, removed, or left unchanged, so you can spot a single edited character in a long document without reading the whole thing twice. The comparison runs entirely in your browser, which means your text stays private and is never uploaded.
A diff is invaluable whenever two versions of something should be nearly identical. Writers use it to review edits between drafts, students to check a corrected essay against the original, and anyone working with code, contracts, or configuration files to confirm that only the intended lines moved. It turns a tedious manual scan into a glance.
How to use it
Paste the original text on one side and the revised version on the other, then run the comparison. Differences appear colour-coded so deletions and insertions are easy to tell apart. For the cleanest results, paste plain text rather than richly formatted content, since invisible formatting can register as a change. Once you have reviewed the highlights, copy the corrected version back into your document with confidence that nothing slipped past.