Swipe between images in lightbox

[gnprice]

In the lightbox, it'd be good to offer the ability to move through a sequence of images, by swiping and/or by tapping buttons. This would include all the images in the current message, and also those in previous and following messages that were shown in the current message list.

Zulip web has this feature, and it's especially convenient for comparing related images. It's also convenient just any time there were several images and you want to view all of them — it makes less friction for getting around.

This feature won't be ready for implementation until we have a design for it.