Android actually can decode and display animated GIFs, using android.graphics.Movie class. This is not too much documented, but is in SDK Reference. Moreover, it is used in Samples in ApiDemos in BitmapDecode example with some animated flag.
I haven’t tested it but apparently you can add quicktime animations to a pdf (no idea why). So the solution would be to export the animated gif to quicktime and add it to the pdf. Here the solution that apparently works: Open the GIF in Quicktime and save as MOV (Apparently it works with other … Read more
By default browser always plays animated gifs, and you can’t change that behavior. If the gif image does not animate there can be 2 ways to look: something wrong with the browser, something wrong with the image. Then to exclude the first variant just check trusted image in your browser (run snippet below, this gif definitely … Read more