These are all standards that could help an image board like this immensely. Better compression is good for everyone. Any Forums needs less traffic for the same content, users can enjoy watching WebM's without being bothered by artifacts, and archivists can take a breather on upgrading their capacity.
Is there a reason why we don't have any of these technologies? VP9 is already outdated at this point, but it would still be a significant boost from current WebM's.
ISP NAT that you can't forward ports through? What times we live in.
Adrian Roberts
While I understand not wanting extra costs, there's still the option of using a VPN (either self-hosted on a VPS or using a VPN provider) to expose your home server to WAN.
Charles Long
90% high-quality JPEG. Still has some visible artifacts.