What is an online whiteboard?
An online whiteboard is a blank digital canvas where you can draw freely, add shapes, arrows and text, and quickly sketch out an idea the way you would on a real whiteboard. This one gives your strokes a relaxed, hand-drawn look, so diagrams feel informal and approachable rather than rigid.
Because everything runs in your browser, there is nothing to install and no account to create. It is ideal for the quick, throwaway sketches that fill a working day — a flow between two boxes, a rough wireframe, a mind map — without opening a heavy design application.
How to use the whiteboard
- Pick a tool from the toolbar: freehand pen, rectangle, ellipse, line, arrow, or text. Choose a stroke color, an optional fill, and a stroke width.
- Draw on the canvas by clicking and dragging with your mouse, or by using your finger or stylus on a touch screen. Switch to the Select tool to move an element, or the Eraser to remove one.
- Use Undo and Redo (Ctrl+Z / Ctrl+Shift+Z) to step through changes. When you are happy, export the board as a PNG image or copy it to your clipboard.
What people use it for
- Sketching flowcharts, diagrams and system designs during planning or a call.
- Drawing rough wireframes and UI layouts before committing to a design tool.
- Explaining an idea visually — boxes, arrows and labels — to share as an image.
- Quick brainstorming, mind maps and annotated notes that you can save for later.
How it works
Each shape you draw is stored as a lightweight description — its type, position, color and a random seed — rather than as pixels. The seed drives a small, consistent amount of jitter along every line, which is what gives shapes their hand-drawn wobble while keeping them stable when the board is redrawn.
The whole board is kept as a list of these elements, so undo, redo and moving items are simply changes to that list. When you export, the current canvas is rendered to a PNG on a white background so the image looks the same in light or dark mode.
Why use this whiteboard
- Completely free, with no sign-up, watermark or export limit.
- Private by design — drawings stay in your browser and are never uploaded.
- Autosave means your board is waiting for you the next time you open the tool.
Your privacy
This whiteboard is fully client-side. Your drawing is saved only in your own browser's local storage and is never transmitted to any server, so even sensitive sketches — internal architecture, unreleased ideas — stay entirely on your device.