Drag across a monospace grid to cycle Unicode glyphs from light to dense (by rasterized pixel count). Narrow which blocks you use via the pills, tune columns, rows, and speed, scatter or clear, toggle looping, and copy the grid as plain text.
Demo: https://reagent-systems.github.io/unicode-canvas/embed.html
Locally: Open unicode-canvas.html (or embed.html) from the repo root.