Free online whiteboard with ruler, protractor and compass
BoardScribble is a free whiteboard that runs in your browser. Start drawing immediately: there is no account, no board limit and no ad-blocker wall. Your work is saved on your device and stays there until you clear it.
Real drafting instruments
Protractor, ruler in centimetres, compass that draws true arcs, and 30-60-90 and 45-45-90 set squares. Pen and line tools snap to their edges.
Multiple boards
Add as many boards as you need, flip through them like slides, and present full screen with the arrow keys.
Draw on PDFs
Import a PDF and each page becomes a board you can annotate. Export everything back out as a multi-page PDF.
Teaching helpers
Laser pointer, highlighter, coordinate plane, number line, table, distance measure and a countdown timer.
Free export and sharing
PNG, SVG, PDF, copy to clipboard, or a share link that carries the board inside the link. No sign-in for you or the recipient.
Dark mode and paper styles
Blank, dot grid, grid, lined paper, graph paper and a dark theme, all free, on any device including touch screens.
How to use the online whiteboard
- Pick a tool on the left, or press a key: P pen, Y highlighter, E eraser, K laser pointer, R rectangle, O ellipse, L line, A arrow, T text, N sticky note.
- Choose a color and size in the Style panel. Use the custom picker for any color.
- Use an instrument from the Instruments group. Drag it to move it, drag the blue dot to rotate it. Draw along a ruler or set-square edge for perfectly straight lines.
- Draw a circle or arc with the compass: set the radius by dragging the hinge, then drag the pencil end around the needle point.
- Add boards with the + button above the canvas and move between them with the arrows, or import a PDF to get one board per page.
- Export or share from File and Share link when you are done.
Keyboard shortcuts
- V select
- H pan
- P pen
- Y highlighter
- E eraser
- K laser
- L line
- A arrow
- R rectangle
- O ellipse
- T text
- N note
- D measure
- Ctrl+Z undo
- Ctrl+Y redo
- Del delete selection
- Space hold to pan
- ← → boards (presenting)
Ideas for teachers, students and teams
- Math and geometry: construct triangles with the set squares, bisect angles with the protractor, draw circles with the compass, plot points on the coordinate plane.
- Online tutoring: import the worksheet as a PDF, annotate it, and share the board as a link.
- Lessons and presentations: build boards in advance, present full screen and point with the laser.
- Brainstorming: drop sticky notes, group them, and export the result as a PDF.
Frequently asked questions
Is this whiteboard really free?
Yes. There is no account, no paywall and no limit on the number of boards.
Do my boards expire?
No. Boards are stored in your browser on your own device and stay until you clear your browser data. Because browsers can clear storage unexpectedly, use File → Save board file for important work.
How does “Share link” work?
The whole set of boards is packed into the link itself, so nothing is uploaded to a server. Whoever opens the link gets their own editable copy. Very large boards, or boards with images and PDF pages, can produce long links; for those, save a board file instead. Live multi-person editing is not part of this version.
Can I draw on a PDF?
Yes. Choose File → Import PDF. Each page (up to 20) becomes a board you can draw on. The pages are converted to images in your browser, and the PDF reader library is only downloaded when you use this feature.
How do the compass and protractor work?
Turn them on from the Instruments group. Drag a tool to move it and the blue dot to rotate it. For the compass, drag the hinge to set the radius, then drag the pencil end around the needle point to draw an arc or a full circle.
Which formats can I export?
PNG, SVG and PDF (one board or all boards), plus copy-to-clipboard and a reopenable board file.
Does it work on a phone or tablet?
Yes. It supports touch, stylus, pinch to zoom and two-finger pan.
Can I use it offline?
Yes. After your first visit your browser keeps a copy of the app, so it opens and works without a connection, and you can install it from your browser menu (Install app or Add to Home Screen). Importing a PDF needs a connection the first time, because the PDF reader is downloaded on demand.