Depends on the website usually, one that I managed to "hack" is a newspaper in my country (the biggest one actually) that only hides the article text through a

Depends on the website usually, one that I managed to "hack" is a newspaper in my country (the biggest one actually) that only hides the article text through a CSS class; You just remove that from the HTML through dev tools and have access to the whole thing. I hope in most cases it is more complicated than that