Graffiti Wall

Drag with one finger, mouse, or pen to draw. Touch gestures inside the paper are reserved for drawing; scrolling works normally outside it. Undo and redo affect only marks made in this browser session.

This is one public surface: anyone may draw and everyone sees the result. No image uploads, text, scripts, or permanent presence history are accepted. PostgreSQL survives app restarts, but scheduled backups are not enabled yet.