Lovecraft wrote horror fiction but never achieved fame in his lifetime. He was a short-story writer, essayist, poet and novelist. He is considered the most important and influential century writer in his genre of science and horror fiction.
Somebody stop claiming that the Evil Dead Necronomicon is the same as the Lovecraft one. "The Necronomicon's appearance and physical dimensions are not clearly stated in Lovecraft's work." Therefore this meme is factually inaccurate.