nexusmods.com - broken styles, images and favicon no longer loading

[MrChow]

The gist of it:

* Due recent revamp, nexusmods.com has changed the way it serves images, so instead of proper jpeg, png and even ico files it outputs custom webp and avif, which fail to load / parse in Palemoon most of the time.
* Due the same revamp, the styles are now seemingly using Chrome-specific constructions which makes Palemoon fail to display mod preview images on authors profile pages even if they were successfully loaded, essentially making the browser useless for the purposes of interaction with this site.

I use Palemoon 33.2.0 and also tested everything with Firefox 115 and Chromium 100 - both appear to work just fine.

[Moonchild]

Yup, they are serving avif images despite it not being in out content negotiation header (Accept: request header), even though the file name of the images has a .png extension. I guess someone was overzealous trying to "optimize" the images.
We don't support the AVIF image file type.

[back2themoon]

That website is down at the moment.

[moonbat]

That website is down at the moment.

Hopefully someone realized they screwed up and are fixing this

[Moonchild]

I shot them a message after reading this thread; maybe they're trying to fix it? not sure.

[Moonchild]

So far doesn't look good. I received a response stating they weren't familiar with the context of the format they started to use but that it "looks to be a well-supported and growing format with good compression and quality" and if them opening an issue for AVIF on our repo would be worth it.

In response I gave some objective context to clarify, what position AVIF takes compared to the established formats, how it compares to other formats, how it doesn't provide significant improvements or interesting features to the existing ecosystem of images and indicating we went for JPEG-XL instead (that combines the best parts of AVIF and other formats) for the typical uses where one would consider AVIF (small web graphics isn't one of them, actually, where webp significantly outperforms it). I indicated that a request for AVIF would not be prioritized in that context because we have limited resources.

Result:

Thanks for the response.
All the best with Pale Moon.

I'm not sure how to read this, but it seems like they are just giving us (and in turn all nexusmods users) the middle finger with that, not wanting to even consider using webp or other established formats when we indicate the formats supported in our "Accept:" headers.
Well, at least it was clarified a little more:

For clarity, I've passed on your feedback about AVIF as a format to other relevant parties at Nexus Mods.
Thanks for sending it over.

I can only hope they do something with it.