Diff Checker

Paste two blocks of text — a previous and current version of a contract, a commit message, or a draft — and see exactly which lines changed. Unchanged lines appear grey on both sides; removed lines are red on the left, added lines are green on the right. The diff is a standard LCS-based line comparison, same idea as diff on a Unix shell.

For comparing structured text like JSON, reformat both sides first with JSON Formatter before running the diff — identical data can otherwise show as completely different if whitespace or key order shifted.