Full-page screenshot tools usually break on tall pages — sticky headers get duplicated, seams line up wrong, stitches tear apart. SeamShot checks every overlapping region pixel by pixel before joining two slices, which is why long pages come out clean.
It can also watch a page on a schedule, then show you a text-plus-image diff against your last capture — so changes surface on their own instead of you re-checking by hand.
It's free and doesn't require an account.
