Whiteboard
Draw, write and explain with your finger, a mouse or a stylus. Save it as a picture when you're done.
Runs on your device. Nothing is uploaded. Your drawing is saved automatically in this browser only, so it is still here next time on this device. Clear the board to remove it.
Tips
Pinch with two fingers to zoom and move around. With a mouse, use the move tool or the + and − buttons. Drawing never scrolls the page.
With a pressure-sensitive pen, press harder for a thicker line. Fingers and mice draw an even line.
Pick the text tool, tap where the words should go, type in Arabic or English and press Enter. The direction follows the first letter you type.
Save PNG keeps what you see on the board, in its background colour. Undo and redo also work with Ctrl+Z and Ctrl+Y.
Sources: the "Did you know?" study is Andrade J. (2010), "What does doodling do?", Applied Cognitive Psychology 24(1):100–106 (40 adults listened to a dull phone message; those who shaded shapes while listening recalled 29% more, 7.5 names and places against 5.8), as reported by the publisher Wiley-Blackwell. Pen pressure comes from the browser's Pointer Events (W3C), where supported.