Attempting to ascertain the image quality yielded by a digital camera or lens by close inspection of its output at 100% zoom (or greater). Some consider this behaviour to be obsessive.
The default picture used by over 84% of users of the popular networking site myspace (See definition #4).
-Man, she looks fine!
-Can't you tell? That's a horrible pixelated shot of an underdeveloped highschool freshman in their underwear trying their best to make a seductive face, dude.
A meme within the SCPfandom referring to a containment breach of SCP-096 that was caused by "four Pixels... Four Fucking Pixels" the photo was taken by a civilian on a mountain and the breach was caused by the same civilian