GNOME Web (née Epiphany) now supports WebKit Content Blocker rules but sadly still comes configured with AdBlock rules that do not protect your privacy (they block some ads).
I’ve updated the instructions for replacing them with Better Blocker’s rules instead if you care about protecting your privacy.
https://ar.al/2018/07/17/enabling-better-blocker-in-gnome-web/
TL; DR: Enter this a terminal window:
gsettings set org.gnome.Epiphany content-filters "['https://better.fyi/blockerList.json']"
PS. GNOME Web could have changed the default blockers but chose not to due to aesthetic reasons (“does not block YouTube ads”). Guess what? If you’re on YouTube, you’re already being tracked (and I’d love to know how AdBlock plus – which gets paid by Google and others to not block their trackers – blocks YouTube ads using WebKit Content Blocking Rules).
https://gitlab.gnome.org/GNOME/epiphany/issues/77
If they start caring about your privacy, they can do so by changing a single line in their codebase.
