How these are made

There is no artist and no clip art. Each page is drawn by a program from a single number called a seed. The same seed always produces the same drawing, which is why every design here has a fixed number you can come back to.

The program picks a structure — concentric bands, radiating spokes, nested polygons, interlocking circles, spirals, woven rings and several more — then a style, a level of detail, and a set of decorations. Before a design is published, its recipe is checked against every recipe already used. If it matches one, the program rolls again. No two pages on this site share a structural recipe, and none ever will.

Because the drawings are vector, they print sharp at any size, from a postcard to a poster. The PDF files are true vector too, not pictures of a drawing.

What you get

PNG

2480 × 2480 px, which is A4 at 300 dpi. Opens anywhere.

PDF

Vector, sized for A4 or US Letter with even margins. Best for printing several.

SVG

The original file, a few kilobytes, scalable without limit.