Board Thread:Support Requests - Getting Technical/@comment-3012625-20171028233554/@comment-26402117-20171104150006

Here's CSS with a more specific selector group that you could use: img[data-image-key$=".gif"], img[alt$=".gif"]:not([data-image-key]) { opacity: 0; } This should work around FANDOM:
 * it bypasses ?cb parameters in locally uploaded images.
 * it also picks up embedded external images (these only seem to work when the link ends with a file extension).