Blackboard — Infinite Dark Canvas
Chalk-textured infinite board for teaching and sketching. High-contrast dark surface, pastel chalk colours and full pan/zoom. Private by design.
Teach and sketch on a dark slate
Chalk pastels on a flat #1A1D1B board. Infinite pan/zoom, short share links and local autosave. Ideal for maths and diagrams.
Launch BlackboardHow it works
Open the blackboard and write immediately. The surface is a flat dark slate — easier on the eyes for long teaching sessions and gives pastel chalk colours natural contrast.
Use Pen for bold chalk, Pencil for fine graphite and the stroke-eraser to delete a whole line in one swipe. Pick from white, yellow, blue, pink and mint pastels or add a custom colour, and adjust thickness with the slider. Toggle Plain, Grid or Dots backgrounds for graph work.
Everything is calculated locally: pan, zoom, strokes and settings never leave your browser. Share creates a short link, and Export saves a PNG cropped to your drawing. Switch themes between Chalkboard green, Charcoal and Navy without losing your strokes.
What you get
- Flat #1A1D1B board with pastel chalk palette tuned for contrast against dark
- Infinite canvas with 10–500% zoom, Space+drag panning and a recenter arrow
- Pen, Pencil, stroke-eraser, size control, three board themes and Grid/Dots toggles
- Local autosave, recent boards, undo/redo and PNG export on the dark surface
- Short share links, stylus and touch support, keyboard shortcuts
Frequently asked questions
Notes are stored locally in your browser. Refreshing preserves your drawing. Use New Blackboard in the drawer to start over.
Yes. All coordinates are calculated client-side. Nothing is uploaded to a server unless you explicitly create a short share link.
Yes — Apple Pencil, Wacom and multi-touch trackpads are supported with smooth stroke rendering.
Open Settings from the header and toggle Board Theme (Green / Charcoal / Navy) or Background Style (Plain / Grid / Dots). Your choice is saved locally.