A while back, I came across the idea of millitext, where text is encoded using the coloured subpixels that make up an individual pixel on a screen.
Unfortunately, the generator that's also on that website doesn't work anymore, so I was inspired to make my own version.
My version uses a 2-pixel width for each character and uses a font that I designed that can display all printable ASCII characters (control characters are just boxes), including lowercase. I might make a version that includes larger character sizes that look nicer or uses an extended ASCII character set later.
Full printable ASCII character set, actual size
Same image, but magnified with phone camera
