I think it is a good time for refresh on WebP support in Firefox.

The question that bother me most - what are the current reasons for not 
supporting WebP? Are they political or technical?


Is they are political, then it would be really helpful for Firefox supporters 
to know what are they stand for. I know that Mozilla pushes its own solution 
for the better data compression on the web:

https://blog.mozilla.org/research/2014/07/15/mozilla-advances-jpeg-encoding-with-mozjpeg-2-0/
https://blog.mozilla.org/research/2014/12/23/daala-progress-in-2014/

But none of them solves the problems that WebP solves:

1. Better compressed animated .GIFs 
(https://www.google.com/search?q=reactiongifs)
2. Big JPEG images with transparency 
(https://www.google.com/?q=transparency+in+layered+web+design)

I appreciate Mozilla's research into better JPEG compression techniques and I 
would definitely use mozjpeg once it is available and supported by GIMP and 
others, but that is quite orthogonal to the two problems above.


I don't want to argue about what is the best compression algorithm out there, 
because I am not the expert, and it may happen that in future new GPU types and 
quantum computing may bring even more efficient compression techniques, but as 
a user, I'd be more satisfied to get a little practical improvement now than a 
huge theoretical later. Maybe it is possible to get both, but at the moment I 
am afraid that idealization may kill everything.

I suspect that there might be issues with mobile support and security audit, so 
I'd be happy to hear about them. I am sure it is possible to find funding for 
independent security research for WebP code if that is a concern. But it is 
impossible to help resolve the problems without a clear picture what's going on.
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