Diff Viewer

A proper comparison tool for two versions of anything text-shaped — code, config, prose, query output. It computes a real line diff rather than a naive row-by-row comparison, so an inserted line shifts everything sensibly instead of marking the whole remainder as changed. Inside each changed line it runs a second pass at word level, so you can see the three characters that actually moved rather than re-reading the whole line. View it side by side or as a unified listing, collapse long runs of unchanged context down to a few lines, and ignore whitespace or case when that noise is not what you are looking for. Export the result as a unified diff patch you can hand to git apply, or copy it straight to the clipboard. Everything is computed in your browser.