Slides are finished before the meeting starts. That is their strength and their weakness: they show a conclusion, but they cannot follow the conversation into the corner where the real question lives. When someone asks "wait, how does that connect?" you cannot draw the connection on a static slide — you can only click to the next one. A full-screen whiteboard closes that gap. Shared on a call or thrown onto a projector, it turns your screen into a live surface where the idea is built while the room watches, exactly at the pace the room needs. This guide is about presenting with one: how to screen-share a clean, distraction-free board on Zoom or Google Meet, how to run it on a second monitor while your notes stay private on the first, how to annotate live, and how to hand out the finished board as a PNG or PDF afterwards — all with no sign-up.
Why a Full-Screen Board Beats Slides for the Live Part
Not every part of a talk should be a slide. The opening context, the polished chart, the closing summary — those are fine pre-built. But the middle, where you reason through something with the audience, is where a slide deck fights you. You cannot annotate a fixed image without switching into a clunky pen mode, you cannot reorder points on the fly, and every click feels like a decision made for the audience rather than with them.
A full-screen whiteboard inverts that. The canvas starts empty and grows as you talk, so the audience follows your reasoning rather than reading ahead. When a question lands, you answer it where it was asked — draw the arrow, add the box, circle the number that matters. Because the board fills the whole screen edge to edge, there is no browser frame, no tab strip, and no taskbar competing for attention: the room sees the idea and nothing else. It is the difference between showing a finished map and drawing the route together.
The engine underneath is the same one on the general online whiteboard — smooth vector pen and highlighter, auto-recognized shapes, arrows and connectors, sticky notes, text and images — simply framed to fill the display and open instantly. Everything you draw is a real object you can move, recolor, rotate and reorder mid-sentence, so the board keeps up with a conversation that never goes quite where you planned.
Screen-Sharing a Clean Board on Zoom, Meet or Teams
The most common way to present a board is to share it over a video call, and the trick to doing it well is to share the board and only the board. Open the full-screen board app, which loads straight onto a blank canvas with the pen already selected, then trigger full-screen so the browser chrome disappears. Now start your call's screen share — and here is the important choice: share the specific window or the specific screen showing the board, not your entire desktop. Your audience sees a clean canvas instead of your dock, your other windows, and whatever notification arrives at the worst possible moment.
Because the canvas is edge-to-edge, it uses every pixel the call will transmit, which matters more than it sounds. Video calls compress hard, and thin lines are the first casualty. Vector strokes hold up far better than a scanned photo of a real whiteboard, so an arrow you draw stays a crisp arrow at the other end. Keep line widths a little heavier than you would for print, favor high-contrast colors on the default light canvas, and zoom in on detail with the mouse wheel when you want everyone to read a small label — panning and zooming happen inside the canvas, so the share never flickers or switches windows.
All three major platforms — Zoom, Google Meet and Microsoft Teams — support sharing a single window or screen from their share menu, and the board behaves identically in each because it is just a web page. There is nothing to install, no plugin to grant, and no account to connect. If your platform offers "share a Chrome tab," that works too and often gives the smoothest frame rate, though full-screen the whole display when you want the board to fill a projector in the room.
The Two-Monitor Setup: Board on One Screen, Notes on the Other
The single biggest upgrade to presenting from a whiteboard is a second monitor, and it is worth setting up deliberately. The idea is simple: the audience-facing screen shows only the board, and your private screen shows everything you do not want them to see — your talking points, the next thing you plan to draw, the chat, the participant list, your email if you must.
To do it, put the browser window running the board app on your second monitor and make it full-screen there. In your call software, share that monitor (or that window). Your primary screen is now free: keep your outline in a text file, watch the reactions in the video grid, and glance at your notes without the audience ever seeing them. Because full-screen pins the board to one display, dragging your mouse back to the first monitor to check something does not disturb what the room is looking at — the board sits still while you work behind it.
This is also the setup for a walk-and-talk in a physical room. Send the second output to a projector or a large wall display, full-screen the board on it, and present from your laptop while the board lives on the wall. You draw on the laptop, the room watches the wall, and your notes stay on the laptop screen angled toward you. It is the closest a browser gets to a real presenter setup, with zero specialist software.
Annotating Live: Building the Point in Front of the Room
Live annotation is where the format earns its keep. A few patterns work especially well when a room is watching. Paste or place an image — a diagram, a screenshot, a floor plan — then draw on top of it to point at exactly what you mean; the drawing sits above the image as its own layer of objects, so you can wipe your marks and leave the original clean. Use the highlighter to sweep attention across a phrase without obscuring it. Drop sticky notes as you collect ideas from the room, then drag them into groups so a messy brainstorm resolves into structure while everyone watches it happen.
Because every mark is a vector object rather than a fixed drawing, you can correct course without starting over. Nudge a box that landed in the wrong place, re-point an arrow when the discussion shifts, recolor a cluster to show which items are agreed, or use the rotation handle to angle a label — all mid-presentation. Snapping and the dot grid keep things roughly aligned without you fussing over pixels, and smart shape recognition means a rough rectangle you sketch while talking snaps into a clean one so the board never looks scrappy on a shared screen. When a section gets crowded, zoom out to show the whole structure, then zoom back in to the part you are on.
After the Meeting: Export the Board as PNG or PDF
A live board should not evaporate when the call ends. The moment the discussion wraps, export the finished canvas and send it round as the record of what was actually decided — not a tidied-up reconstruction, but the real arrows, groupings and annotations the room built together. Export a PNG to drop into a follow-up email or a chat, or a PDF when you want a clean, print-ready page for the minutes. There is also a copy-to-clipboard option that puts a PNG straight onto your clipboard, so you can paste the board directly into your slides, a document, or a message without saving a file at all.
For anything you will revisit, export the scene as JSON: it reopens in the board exactly as you left it, fully editable, so next week's meeting can pick up where this one ended. And when you need a crisp, resolution-independent version for a report or a printed handout, export SVG, which scales to any size without going fuzzy. If you want to choose the right format for each job, our companion guide on exporting a whiteboard to PNG, SVG and PDF walks through each one and when to reach for it.
It Stays Private Even While You Share It
Screen-sharing a board can feel like the least private thing you could do — it is literally on everyone's screen. But there is a crucial distinction between what the audience sees and where the data lives. The board runs entirely in your browser: every stroke, shape and export is created locally on the HTML canvas, and the board file itself is never uploaded, never stored on a server, and never tied to an account. Your call software transmits a video of your screen, but the underlying document stays on your machine. For sensitive sessions — a client's numbers, an internal roadmap, a student's worksheet — that means the working file never leaves your device even as you present it.
Continuity is handled locally too. The board autosaves to your browser's storage after every change, so if the call drops or you close the tab by accident, your work is not gone — reopen the board app and your last scene is restored, ready to keep presenting. There is no account to sign into and nothing to sync; the board simply picks up where you left it on that machine.
The Honest Limits for Presenters
Because the board stays on your device and is never uploaded, there is no built-in live co-editing — your audience watches your screen share rather than drawing on the same board from their own machines. Real-time multi-user editing is inherently a server feature, since something in the middle has to relay everyone's cursors and changes, and that is deliberately not what this tool does. For the vast majority of presenting — one person driving while a room watches and discusses — screen sharing is exactly the right model, and it works on any call platform without setup. When you genuinely need others to contribute marks, collect their input verbally or through the chat and draw it yourself, then export and share the result so everyone leaves with the same artifact.
The other trade is the one that makes the privacy possible: your board does not follow you between computers automatically. To present the same board from a different machine, export the JSON scene and open it there. In practice that is a one-file handoff, and it is a fair price for a working document that never touches a server.
Open It, Share It, Present
The fastest way to feel the difference is to run one live. Open the full-screen board app on the screen you will share, go full-screen so the canvas fills the display, and share that window in your next call — or open the full-screen whiteboard tool page for the full toolkit and press fullscreen there. Build the idea in front of the room, annotate as the conversation moves, and export the finished board when you are done. It runs in your browser, autosaves locally, and never uploads a thing — a clean surface to present, explain and decide on, exactly when the moment calls for it. For more on the focus and teaching side of the same tool, see our guide to a free full-screen online whiteboard.