‹ the sandbag

// deterministic wallpaper & poster machine

Seeded Poster Generator

Type any phrase and this room turns it into an abstract poster: a palette, a layout, a pile of shapes, all decided by that exact text. The same seed always makes the identical poster in this browser. Change one letter and you get a different one. That is the entire toy — there is no meaning buried in it, just a small deterministic random number generator wearing a beret.

Your poster

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Seed and controls

The poster redraws as you type. Press Enter or tab away to save this seed to your history. Every character counts — a trailing space makes a different poster than none.

This is a deterministic generative-art toy. Your seed text is hashed into a number, that number seeds a small pseudo-random generator (mulberry32), and that generator makes every decision in the poster — palette, layout, shape count, position, rotation — in a fixed order. Feed it the same text twice and you get the same poster twice, in this browser, forever. Downloading saves the current canvas as a PNG straight from your device; nothing is ever uploaded anywhere. Your current seed and up to 10 recent seeds are kept in this browser under one storage key, sandbag.seededposter.v1, so a reload shows the poster you left on.