when you download an image from the web these days, instead of a PNG or a JPEG, you get one of these new formats which is 8% more efficient, not compatible with any "pre-covid software" and has a name which sounds like

JEG
WebUP
High Information Format Format
webLICC
AppleLuppy
j-eggings Layer 6
ProRes ProxyGold (Grain Profile)
PrBufEncapDCT
h.26vorbis
h.26NeRFscene
Radiance XML
EXIFnoimage
rayJSON
WebX 2000
base64staticBlogSVG.meta
bitplaneConwayAnim

@jk Firefox and GIMP support AVIF and webP so I'm able to view and edit them fine, but no website's image uploader supports them so it's effectively a read-only format used by big tech companies, good job everyone.
@jplebreton @jk one of my weirder recurring tasks at work is converting these weirdass formats to jpeg when viewers email them in so they can be run through the bitumenous coal fired apparatus that lets us show them on the air