This page makes a cracked glass surface. The pattern is the border between the polygons the picture is cut into, and there are three ways to cut it. Radial runs spokes and rings out from a single point, shatter clusters the pieces around a few impacts, and craze spreads an even network over the whole surface.
Density is how finely the surface is cut, and rings is the number of concentric circles the radial kind draws. Raise the jitter and the lines spread out in direction and spacing; raise the branch and short cracks run into the faces. A new seed gives a different pattern at the same settings, and clicking the picture draws another one.
The surface panel holds the glass tint and fill, the crack colour, width, and strength, and how much the faces differ in brightness. Anything left unpainted stays transparent, so a fill of zero gives an image of cracks alone. The output panel sets the size and saves a PNG, redrawn at that size rather than stretched from the screen.
Panels move when you drag them by the heading, resize from any edge or corner, and stick to the edges of the screen. Double-click a heading to switch to the fixed layout, where one panel sits in the top right. Click Rollpie at the top left to see the other applications, the falling pane of glass among them.