Were you on a computer you couldn't screenshot from? Like a work/school computer or something?

Alt+PrintScreen will shot your current web. Then you can post to a website like Imgur or something, and just save the image on your cell phone; assuming it was the potato of choice for this picture.

Then upload your nice, clean picture! Friends don't let friends use potatocam on computer screens.

GLHF

its a effect I used on my computer