This seems excessive. What percentage of wikis will actually use multi-page TIFF files? Probably a very small percentage.

In T398530#10970818, @Pppery wrote:

This seems excessive. What percentage of wikis will actually use multi-page TIFF files? Probably a very small percentage.

Thanks for the comment.

My understanding is that this is necessary for displaying any TIFF files, including single-page TIFF files. TIFF files can be higher-quality (but also therefore bigger filesize) images than jpg or webp. And they are available from Commons.

I'm actually looking for a multiple page TIFF file example right now, if anyone has any ideas.

In T398530#10971453, @Aklapper wrote:

The focus here is that it can be used to display TIFF files, whether single page or multi-page. Otherwise, TIFF files can't be shown.

That's an "argument" to ship any potential extension to display any potential file type.

@Bugreporter2: Please stop filing lots of "Bundle ... with core" tasks to bloat core with uncommon functionality. These tasks will get declined.

This doesn't apply here. TIFF is a common filetype, and has functionality that other image filetypes lack.

It's not "bloating the core" because it's not going into the core, but being bundled alongside it.

And this should be considered by the developers. You are not the sole judge of this.

Which "the developers"?