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About this tool
Highlight the privacy changes that actually matter between two policy versions.
The Privacy Policy Version Diff compares two versions of a privacy policy line by line and reports which lines were added, which were removed, and how many of those changed lines touch privacy-sensitive language. It splits both texts on line breaks, drops blank lines, and treats a line as changed when its trimmed text has no match in the other version — optionally ignoring capitalization. Any added or removed line containing collect, share, retain, delete, sell, consent, right, transfer, processor or cookie is counted separately as a privacy-sensitive change, so the substantive edits surface ahead of the cosmetic ones.
Open Privacy Policy Version Diff on AltFTool — it loads instantly in your browser.
Paste the old wording into 'Previous policy' and the new wording into 'Updated policy'.
Leave 'Treat capitalization-only changes as equal' ticked so a re-cased heading is not counted as both an addition and a removal.
The result gives added and removed counts plus privacy-sensitive changed lines, then lists the first 100 changes marked + or −.
Added and removed lines are re-scanned for ten data-practice keywords so retention and sharing edits are counted apart from wording tweaks.
One toggle makes a re-cased heading or sentence match its old version instead of showing as both an addition and a removal.
You get the before-line total, after-line total and sensitive-change count up front, then the marked +/− lines beneath.
A line counts as removed if its trimmed text appears nowhere in the new version, and as added if it appears nowhere in the old one. Matching is exact on the trimmed text, so moving a sentence between paragraphs shows as unchanged but rewording it shows as one removal plus one addition.
A changed line is counted as privacy-sensitive when it contains any of ten keywords: collect, share, retain, delete, sell, consent, right, transfer, processor or cookie. That count appears as its own figure so you can see at a glance whether the revision touched actual data practices.
The counts cover the whole document, but the marked line list is capped at the first 100 changes. For policies with more edits than that, compare one section at a time to see every line.
No — treat the output as informational triage, not a legal review. It reliably shows which lines differ, but whether a change is material to your obligations is a judgment call for a qualified privacy or legal professional.