Excalidraw Online Whiteboard

Excalidraw is a virtual whiteboard for sketching hand-drawn-style diagrams. You drag and drop shapes, arrows, and text onto an infinite canvas, which makes it well suited for quick architecture sketches, wireframes, and brainstorming where a rough, informal look is an advantage.

Yes, it is completely free and works without an account. Open the page and start drawing immediately.

Yes. This editor supports managing several named drawings, so you can keep separate boards for different projects instead of overwriting a single canvas.

Yes. Select Share above the canvas to copy a compressed URL containing the scene. The recipient opens an editable local copy without an account or server upload. Drawings with large embedded images may exceed reliable browser URL limits and should be exported as an .excalidraw file instead.

You can export your board as a PNG or SVG image to drop into docs, slides, or issues. Exported images preserve the hand-drawn style of the original sketch.

Use Excalidraw when you want to draw freely by hand — dragging shapes and arrows for quick sketches or collaborative whiteboarding. Use markup tools like Mermaid, Graphviz, or PlantUML when you want diagrams generated from text that can be version-controlled and produced programmatically.