Since both scripts are on Dev wiki... like I said before, you should ask there.
This really should have been posted at Dev wiki.
Links to their walls are listed here: https://memory-gamma.fandom.com/wiki/Special:ListUsers/sysop
That wiki has no content moderators.
Your info is very vague... if we have to guess what you're talking about we won't be able to help you very well.
Every wiki has different policies, so there is no general answer. If you tell us the wiki, we can look for their policies.
Yeah, that looks more like buggy stripping code.
That is not the script. It is just the code to have it render somewhere. What wiki is this screenshot from?
Dev wiki is probably a better place to ask for help troubleshooting.
@Joshuabirger can you give a link to where you added the code for the dev script?
But there are plenty of online tools to scale, crop, and convert to .ico... Most wikis would want to have a favicon that fits their topic, not some random image for a premade repository or clip art library.
I've never heard of a "favicon image repository".
FYI, inline CSS doesn't work on mobile.
Well it could also be your browser config...
The problem is the behavior has changed like every 3 months for like a year and a half.
What is "favicon image repository"?
I'm shocked the AutoDMod actually flagged this post. I seems to fail with 9 out of 10 bad titles.
There was some CSS to force redlinks to always show as red, but FANDOM keeps changing the skin so it stops working. Undetectable redlinks is one of the most annoying SEO strategies FANDOM has come up with and they are extra great at being annoying.
Also seems like sockpuppeting too.
If it plays in the browser, either the browser is ignoring the mime type or the uploader is checking something in the GIF that isn't normally in GIFs.
Also, how did you try to upload the GIF? Did you try Special:Upload?