Whiteboard
Sketch an idea with a pen, line, rectangle or ellipse, undo freely, and export a PNG.
Runs in your browserCanvas
Draw with a mouse, stylus or finger. Undo keeps the last forty states.
Good to know
- The last forty states are kept. Undo and redo work on whole strokes, not on individual points.
- The eraser paints the background colour rather than cutting transparency, so the export looks the same everywhere it is opened.
- The canvas is a fixed 1600 by 1000 and scales to fit your window, so the export is always the same size.
- Nothing is saved. Refreshing or closing the page loses the drawing — export a PNG first if you want to keep it.
About this tool
A blank canvas for getting something out of your head: freehand drawing, straight lines, rectangles and ellipses, with a real undo stack so you can experiment without worrying about ruining what you had. The canvas is a fixed 1600 by 1000 and scales to fit your window, which keeps every stroke crisp and makes exports a predictable size. Freehand strokes are drawn onto a cached layer as you go, so long drawings do not slow down the way they do when every frame redraws the whole history.
How to use it
- 1Pick a tool and a colour. The eraser is the same brush in the background colour, so what you see is exactly what exports.
- 2Draw with a mouse, a stylus or a finger. Hold a straight line by dragging slowly — freehand strokes are smoothed by their own points, so speed changes the character of the line.
- 3Undo as much as you need, and export PNG when the sketch says what you meant. The last forty states are kept.
Frequently asked questions
Is the eraser really erasing?
It paints in the background colour, which is a deliberate choice rather than a shortcut. A true eraser would cut transparent pixels, and the exported PNG would then show as a hole against whatever background someone else opens it in — dark viewer, invisible strokes. Painting the background colour means the export looks exactly like your screen in any application, which is the behaviour people actually expect from a whiteboard.
Why does the exported image not match my zoom level?
Because the drawing is always a fixed 1600 by 1000 canvas, and what you see is that canvas scaled to fit your window. Exporting the on-screen size would give you a different resolution depending on the size of your browser window, and shrinking the window would silently produce a smaller image. A fixed export size means the result is the same regardless of how the window happens to be arranged.
Can I get my drawing back if I close the page?
No. Unlike the resume builder or the mind map, a whiteboard is not saved anywhere — closing or refreshing the page loses the drawing, and undo only covers the last forty states within the current session. That is a consequence of keeping the tool fast and completely local. Export the PNG before you leave if the sketch is worth keeping.