You may even be familiar with Shift-Command-5 to capture a single window. Most of us are familiar with Shift-Command-3 to capture the entire screen, or Shift-Command-4 to capture a selected portion of a screen. Whatever the reason, some of the standard Mac screenshot options may not do the trick. Perhaps it’s to capture an image for a meme, graphs for a presentation, or to send that annoying error message to a disbelieving customer service rep. Taking screenshots of a webpage is a normal operation for many.