[GUI] I need help with sizes

Hello, first time really digging into GUI, and I was wondering what’s the size in pixels that a default fullscreen UI has?

I know taking screenshots in game isn’t a very good solution, so I’d like to know a specific size to not mess up anything!

Take note that this is for photoshop usage, not in game, so I need pixel sizes.

So, I think theres no right size, because the size change of which device, but the most big size is the HD Computer / Xbox, that you can see the pixels size on Roblox Studio (in Device switch tab)