Drop two PDFs to compare their text. text.compare extracts the text of each page in your browser, then highlights every word that was added, removed or changed, and shows paragraphs that moved.
Because the files are never uploaded, it is safe for contracts, statements and other private documents. When you're done, export a redline report to send to someone, or print it as a PDF.
Only if the PDF contains selectable text. Scanned pages are images, so there is no text to compare; run them through OCR first.
No, it compares the words. To compare how two pages look, save them as images and use the image comparison.
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.