How to make a QR code in PowerPoint

1. Generate and insert

Build the code (URL for a link, WiFi for venue internet, a feedback form for the closing slide), and download SVG. PowerPoint (2016 and later, including Microsoft 365) inserts SVG natively: Insert → Pictures → This Device, pick the file. The code stays vector, so it renders sharp whether the deck plays on a laptop or a 6-metre conference screen. On older PowerPoint, insert a PNG generated at 1000 px or more.

Resize from corner handles only (a stretched code will not scan), and keep clear space around it: the quiet zone, at least 4 modules, free of text boxes and slide decoration.

2. Size it for the room, not the slide

This is where presentation codes die. The 10:1 rule applies to the displayed code and the farthest person you expect to scan:

Farthest scanner sits at	Code must display at
3 m (meeting room)	≥ 30 cm on screen
6 m (seminar room)	≥ 60 cm
10 m (hall)	≥ 1 m

On a projected 2 m-wide slide, a code occupying a quarter of the width displays at 50 cm, scannable to roughly 5 m. For a large hall, an honest conclusion follows: the back rows cannot scan any reasonable slide code. Repeat the code on handouts, put a short URL beside it for people too far away, or hold the code slide while people walk up. More on screen-distance maths in QR size on a TV screen.

3. Give people time

An audience needs to notice the code, raise a phone, focus and scan. That takes longer than you think from the stage:

• 15–20 seconds minimum on screen; more for big rooms (minimum on-screen duration has the full reasoning).
• Announce it, "this code is on screen for a moment" outperforms silently flashing it.
• One code per slide. Two codes split attention and phones lock onto the wrong one. If you need several (deck download, feedback, social), give each its own slide or repeat them in a closing loop.

Bring the code back on the final slide and leave it up through the Q&A. That is when most scans actually happen.

4. Contrast survives projectors; subtlety does not

Projectors wash out colour and compress contrast, and conference lighting makes it worse. Stick to near-black modules on a white box, even on dark-themed decks, place the code on a white rounded rectangle rather than recolouring it. The colour rules apply with less margin than print, not more. Avoid placing the code over template background art.

5. Test in the room

Scan the code from the actual screen in presenter view and from the back of the room during setup. Screens introduce no special problem (scanning off a monitor works fine), but size and glare only reveal themselves in situ. Before that, sanity-check the file with the validator.

Gotchas

• Compress Media / Compress Pictures on save can downsample PNG codes; SVG is immune.
• Slide transitions and animations on the code slide steal scanning time: leave the code static.
• Exported PDFs of the deck keep SVG codes sharp; screenshots of slides do not.
• Presenter mirroring occasionally letterboxes slides and shrinks the code below your planned size: check the actual projected image.

Generate the slide's code now: make a QR code.

FAQ

How do I add a QR code to a PowerPoint slide?

Generate it, download SVG (PowerPoint 2016+ renders SVG natively), and Insert → Pictures. Resize from corner handles, keep white space around it, and put it on a plain background.

How big should a QR code be on a presentation screen?

A tenth of the distance to the farthest person scanning: 30 cm on screen for 3 m, 1 m for 10 m. In large venues, back rows cannot scan slides, repeat the code on handouts.

How long should the QR code stay on screen?

At least 15–20 seconds, announced. Better, return to it on your closing slide and leave it visible during questions. That is when most of the audience actually scans.

Why did nobody scan the code in my talk?

Usually some mix of too small for the room, on screen too briefly, or competing with other content. One code, big, plain background, long dwell time, plus a spoken prompt.