The pix2pix model works by training on pairs of images such as building facade labels to building facades, and then attempts to generate the corresponding output image from any input image you give it. The idea is straight from the pix2pix paper, which is a good read.

"JavE is a free Ascii Editor. Rather than for editing texts, it is intended for drawing simple diagrams by using Ascii characters.It is like a graphics editor for editing texts instead of images."

"This web application allows creation of 16x16 icons (favicons) using simple drawing tools."

Handcrafted pixels and text by Dan Cederholm.