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Kaito Snezhko
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✓ done2026

BG//SYS — wallpaper generator

Procedural wallpapers in a retro-futurist, Braun-industrial style — rendered on canvas in the browser at any resolution, with presets for iPhone, Mac, iPad, Apple Watch and 4K/5K.

role
Solo developer & designer
stack
JavaScript · Canvas 2D · HTML · CSS · GitHub Pages
BG//SYS — wallpaper generator cover

Problem

I wanted matching wallpapers for all my devices, in the style of Teenage Engineering, Nothing and Dieter Rams' Braun products. Downloading images means licence questions and fixed resolutions.

Solution

  • Everything is generated: nine styles (Keypad Matrix, Dot Matrix, Concentric, Schematic, Horizon, Editorial, Panel Stack, Line Field, Eclipse), palettes like Braun SK-4, grain, vignette and shadows, all driven by a seed.
  • Device presets with sensible export factors: iPhone 14 Pro Max at 2× (2580 × 5592), MacBook at 1.5× (above 4K), and supersampled Apple Watch faces.
  • Every setting lives in the URL hash, so a wallpaper can be shared or recreated exactly. A "variants" view suggests twelve combinations, and there are keyboard shortcuts (space = new seed, R = shuffle everything, D = download, ← → = style).
  • PNG (lossless) or JPEG export. Nothing is uploaded, and there are no external images.

How

Plain JavaScript and the Canvas 2D API, with a small core (seeded random numbers, drawing helpers) and one generator module per style. There's no build step and no dependencies.