I run a technical blog and publish articles regularly that have GIF animations. Examples: one two three.
I plan to aggregate a bunch of these articles into an eBook of sorts. I know I could break out the animations into individual, still images, but I think the fact that they are animated make them much more conducive to learning and involving for the reader.
As far as I know, a typical PDF does not allow for a GIF animation. If not for a PDF, what options do I have for a published eBook that also allow for these animations?