aseline

aseline is a small drawing tool with one rule: every line runs from one grid intersection to another. It is the notebook-margin doodle (stars, knots, string art) given real tools.

What's in it

- Lines and dots that snap to the grid

- Bend any line into a curve with one slider

- Symmetry drawing: mirror, 4-way rotation, 8-way kaleidoscope

- Select, move, rotate and mirror what you have drawn

- Tabs: several canvases open at once, copy between them

- Animation: frames, layers, onion skin, tags, a live preview window

- Export PNG, animated GIF, sprite sheets (with .json), or a PNG per frame

- Light and dark paper

- Autosaves as you go

Private by design

It runs entirely in your browser. No account, no upload, nothing leaves your computer.

How to use it

Play it right here, or download it to keep it offline: unzip and open aseline.html in Chrome or Edge. Help > Keyboard shortcuts lists every key.

Made by one person. More of my things: https://2fish.pages.dev