elementary OS has evolved a lot from just a simple skin on top of Ubuntu. You can see here [1] all the projects which are maintained by the team.
122 karma · joined April 26, 2012
I personally want that feature too.
EDIT: I stand corrected. This has not happened yet. I confused this with some other changes.
There is a problem with Epiphany, namely that the webkit version that ships with Ubuntu is long outdated, hopefully that's going to get fixed: https://blogs.gnome.org/mcatanzaro/2016/02/01/on-webkit-secu...
And if FLIF achieves such great lossless compression, imagine what amazing compression you can achieve with lossy compression.