Text Compare Diff Tool
Compare two blocks of text side by side and highlight every difference.
Seeing what changed
Finding the differences between two versions of text by eye is slow and unreliable, especially when they are long and mostly the same. This compares two blocks and highlights exactly what was added, removed and changed, so a reworded line, an edited value or a single altered character stands out immediately.
Paste the two versions and the differences are marked.
Line and character level
A good diff works at more than one granularity: it shows which lines differ, and within a changed line, which characters actually changed — so you are not left comparing two nearly-identical lines to find the one word that moved. It is invaluable for comparing drafts of a document, reviewing edits, checking two config or data files really match, or confirming a change did only what you expected and left everything else alone. Proving that nothing else moved is often as useful as seeing what did.
Questions & answers
What does it highlight?
Additions, deletions and edits between the two texts, down to which characters changed within a modified line.
What can I compare?
Any two blocks of text — document drafts, config files, data, code — to see exactly what differs.
Is my text uploaded?
No. The comparison happens in your browser.