How to make a web page not show up in search results (Browser: mozilla firefox, Search engine: google)

It gets really annoying when I search for something "obscure", not commonly searched for, such as "art station substance designer material breakdown" and I get pinterest showing FUCKING SCREENSHOTS of the page.

TL;DR, I want to make it so pinterest never shows up in my google search results.

Submitted July 30, 2017 at 12:25AM by zigastrmsek http://ift.tt/2hbWuEz