Drop two .docx files to see what changed between them, even when track changes wasn't turned on. Each paragraph is compared, with changed words highlighted and moved paragraphs marked.
The documents are read in your browser, so drafts, contracts and reports stay private. Export the result as a redline report or print it to PDF.
Only the newer .docx format. Open an older .doc file in Word or LibreOffice and save it as .docx first.
No. It compares the text of each paragraph, which is usually what matters when checking a revision.
Not to compare it. The comparison runs entirely in your browser, and the text you paste and the files you open are never sent to a server for that. There are no ads. The site counts visits with Google Analytics, which sees which page you opened, and keeps its own anonymous tally of what kind of comparisons are made (for example “a Word file, about 500 lines”), but neither ever sees the text you compare. If you copy a share link, the text is packed into the link itself, in the part after the # that is never sent to a server or to analytics. Your history and saves stay in your browser unless you sign in. If you do, they are uploaded to your account, but only after they are encrypted in your browser with a passphrase only you know, so nobody else can read them. The site stores your email address and that encrypted data, and can see how much you have saved but not what it says.