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A free whiteboard for sketches and diagrams. Save your work yourself - a window closed on a whim forgets things fast.
PlusOffice

Whiteboard

An infinite whiteboard for thinking with your mouse. Sketch an idea, build a flowchart, arrange boxes and arrows until the thought holds together. The Whiteboard runs entirely in your browser and saves your sketch automatically - nothing is uploaded.

A live look inside

Live preview. It becomes interactive with your account.

What Whiteboard does

Some thoughts refuse to be forced into a list. A process, a structure, the relationship between a few things - you want to draw that, not type it. The Whiteboard gives you an infinite surface for it, where you sketch, move, group and rebuild freely without the edge getting in your way.

Under the hood is Excalidraw, known for its hand-drawn, understated style. Rectangles, circles, arrows, lines, text and freehand strokes combine into whatever you need right now: a flowchart for a process, a mind map, a quick wireframe sketch or simply a brainstorm of boxes and connections.

Your work is saved automatically in your browser every 30 seconds. Close the window and come back later, and the sketch is still there. This happens locally through your browser's storage, nothing is uploaded to a server and nothing is tied to an account.

The Whiteboard automatically adopts your colour scheme. Work in dark mode and the canvas is dark too, in light mode accordingly light. The interface comes in German and English, matching your chosen language.

Because everything runs client-side, drawing is smooth and lag-free, even with larger sketches. No stutter from server requests, no delay when moving things. You think, you draw, and the tool keeps up. The Whiteboard is set up as a Plus feature.

Features

Infinite canvas

No edge, no page boundary. Zoom in and out and spread your idea as wide as you like.

Shapes, arrows and text

Rectangles, circles, lines, arrows, text and freehand strokes for diagrams, mind maps and sketches.

Hand-drawn style

The understated, sketch-like look of Excalidraw keeps the focus on the idea, not on polish.

Automatic saving

Every 30 seconds your sketch is saved locally in the browser and is back the next time you open it.

Adapts to your theme

Dark mode, dark canvas, light mode, light canvas - and the interface in German or English.

Runs entirely locally

No upload, no server, no waiting. Your sketch stays in your browser on your device.

How it works

  1. 1

    Open the whiteboard

    The empty, infinite board appears at once. An earlier sketch is restored automatically.

  2. 2

    Add elements

    Pick a tool and place shapes, arrows or text on the canvas, or draw freely with the mouse.

  3. 3

    Arrange and connect

    Move, group and connect the elements until your diagram or sketch holds together.

  4. 4

    Keep working

    Your work is saved continuously. Close the window and simply continue later.

Who needs this

→Anyone quickly sketching a process or flow as a flowchart.
→Teams thinking through an idea visually instead of in a text list.
→Founders drawing out a structure or business model.
→Anyone who needs a rough wireframe or layout sketch.
→Learners mapping out a connection as a mind map.

Frequently asked questions

Is my drawing saved?

Yes, automatically every 30 seconds - but locally in your browser, not on a server. If you close the window and return later, the sketch is back, as long as you use the same browser.

Is my sketch uploaded?

No. The Whiteboard runs entirely in your browser. Your drawing is stored locally and not uploaded to a server or tied to an account.

What can I draw with it?

Flowcharts, mind maps, wireframes, sketches, brainstorms - anything made of shapes, lines, arrows, text and freehand strokes. The canvas is infinite, so you are not limited by a page size.

Does the whiteboard work in dark mode?

Yes. The Whiteboard automatically adopts your colour scheme. In dark mode the canvas is dark too, in light mode light. The interface comes in German and English.

Can I create several sketches?

The Whiteboard remembers your current sketch automatically. For separate sketches you export your drawing before starting a new one so the previous one is preserved.

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Ready to use Whiteboard?

No installation. No account needed to start. Open it right in your browser.

Open now