I've been plugging away on MadHatter (https://madhatter.app), a web tool for knitting/crochet projects. It works best on desktop!

Why? Many yarncrafters painstakingly build spreadsheets, or try to bend existing general purpose pixel editors to their will. It's time consuming & frustrating.

Along the way, I've solved a bunch of problems:

  - Automatic decreases (shapes the hat) / overstitching markers (shows when multiple colors are used in the same row)
  - Parameterized designs, like waves, trees, geometric shapes. No more manually moving an object by a couple of pixels, it's a simple click & drag.
  - Color palette merging (can't delete a color if you already use it in a pattern!)
  - Export to PDF (so you can print it or stick it on a tablet)
  - Repeat previews (visualize the pattern as it repeats horizontally)

The core feature that makes this more useful than most general purpose editors is that the canvas is continuous.

If you drag a shape near the right edge of the canvas, you'll see it "wrapping around" onto the right edge.

This reflects the 3D reality of a hat!