This is my attempt to make the smallest possible font. Each character fits inside a 3x3 pixel square (4x4 pixels if you include the space between characters). This font can be useful where pixel space is at a premium, like on an LED matrix or a mechanical display.
I don't consider this a truly complete font because there is no distinction between the capital letters and small letters. Also, some of the special characters can be difficult to descern without context. Nevertheless, this font can create readable text strings and convey information using a minimum of resources.
I am publishing this font under a Creative Commons license, so that anyone can use it for any purpose. Attribution is appreciated but not required.
Leave a comment if you make something cool with it!