Redraw makes a new random design with the current settings.
Channels R, G, B each draw their own set of curves. Inside a channel, curves cancel wherever an even number overlap (that's the XOR), and the three channels add up into yellows, cyans, magentas and white. B&W adds a white channel. Turn channels off for fewer colors.
Black BG / White BG switches between light adding up on black and ink layering on white.
Equalize anchors every curve's control points to the edges, for more even, balanced shapes.
Ribbon draws translucent ribbons of varying width instead of XOR fills; set their width under Lines.
Count sets how many curves are drawn. A few curves make bold shapes; hundreds make fine lace.
Circle draws inside a circle. Then Spiral winds the curves inward, +Edge lays a square-frame pattern over the circle, and Edge+ puts the circle over a square-frame pattern.
BG Image places a photo behind the art; set its opacity with the slider.
Play redraws over and over at the FPS you set. With Morph Mode on, the same curves drift instead of being replaced; Drift sets how far.
Sweep animates the curve count up from From to To and back in steps of Step. Tween Mode glides between designs instead of jumping.
PNG saves a high-resolution picture. SVG saves a true vector version (as a web page) you can scale to any size.
Export MP4 saves the sweep as a video: Reel / Story 9:16 (1080 × 1920) for Facebook and Instagram reels, or Square for posts. GIF works in comments and messages. WebM is the highest quality but most social sites won't take it.
Share gives your design its own page at xor.odd.place/s/…, with the picture at full resolution (2400 × 2400), an optional video clip, and a Make your own like this button. Post to Facebook posts that page, and Facebook shows your actual design. Add a title if you like.
To post a reel, press Make a clip in the share window, then Post clip as a Facebook reel…: the clip is saved and Facebook's reel creator opens, with a caption and link ready to paste. On phones, Share clip… sends it straight to the Facebook or Instagram app.

Your settings are kept in the page address and in every share. Each drawing is random, so opening settings makes a new design in the same style; the share page keeps the exact one.

XOR Bézier draws random cubic Bézier curves, closes each one against the edges of the frame or the circle, and fills them using exclusive-or: paint where an odd number of shapes overlap, bare background where an even number do. Each color channel is drawn this way on its own and then blended, which is where the stained-glass colors come from.

Everything runs in your browser. Nothing you make is uploaded.

Made by Jason Buchheim. Produced by Odyssey Expeditions.

XOR Bézier: generative XOR curve art, on odd.place