Join a stack of screenshots into one image

Some things can only be captured in pieces. A long conversation, a report that scrolls, a settings page taller than the window. You end up with six screenshots which, sent as six screenshots, force whoever receives them to reassemble the sequence in their head and to trust that nothing is missing between them.

One continuous image removes both problems. The order is fixed, the overlap is visible, and a reader can see for themselves that nothing has been cut out between frames. For anything being used as evidence, in a support ticket, a complaint or a dispute, that continuity is the point rather than a nicety.

Which raises the thing worth being careful about. A stitched image is a small piece of editing, and an audience reasonably assumes it shows a continuous sequence. Leaving out an inconvenient frame produces something that is technically a set of real screenshots and is nonetheless misleading. If a section is removed, say so, in the same way you would with any other excerpt.

Practically, the results improve enormously if the captures overlap. Screenshots taken by scrolling exactly one screen at a time tend to lose a line at each boundary, and the join looks wrong in a way that undermines the whole image. Scrolling about two thirds of a screen between captures gives enough overlap to align cleanly.

Screenshots are also a common accidental disclosure. Whatever else was on screen came too: the other browser tabs, the notification that arrived mid capture, the name of the customer in the next row of the list. Worth reviewing the assembled image before it goes anywhere, because six separate images get glanced at and one long one gets read.

Everything happens in the page. Screenshots are among the most sensitive things people share casually, precisely because they are captured in a hurry from a screen that had other things on it, so nothing here is uploaded.