World’s Smallest Legible Font
Other fonts have claimed to be the smallest legible font, but I have to say that this 5×1 pixel font by Terry Cavanagh in 2008 is the undisputed king. It cleverly uses the way that LCD displays display pixel color with differently sized dots, depending on color, to create a minuscule but (barely) legible font. Warning, the font only works for LCD displays. But then again, CRTs are about as popular as rotary telephones and VCRs.
I can’t think of a single use for this, but then, why would someone create and paint microscopic sculptures by hand.
Blown up it appears as: