When a web browser widget is displayed in 3d using an actor with widget component, the loaded content scales differently on editor and android. You can try to load following HTML to see the outcome:
@SunSamurai Is this happening on a standalone Quest headset or an Android phone? Also, which Unreal version are you using?
I develop Meta Quest 3D WebView, a paid browser plugin for standalone Quest with configurable browser resolution. It may be relevant if you’re targeting Quest, but I’d want to test your example before suggesting it as a solution to this particular scaling issue.