I use lots of gimp and with time, surely you can get used to it, but generally, it's not a simple photo editor.

Multiplication by a number smaller than one is division

Ferdium is based on electron. But it actually uses it to render websites. It's slick and handy. When talking about profiles, I mean in Firefox, which will grand you all the protections you need. If you need to add addons or change settings, with the user.js config, you will need to type about:setthings or about:addons rathet then cluck on a few buttons, but if all you use it for is just a few sites working in a single window, it's fine.

You can use ferdium for that. I also made a profile, that has hidden all possible buttons and I made links to open website in that cut down profile. You can also use user.js to make it really slick.