You wrap up your talk, flip to the last slide and say: "The materials are at this link." The audience picks up their phones, types the URL, makes a typo, gives up. With a QR Code on the slide, they point their camera, scan, and land on the page in two seconds — no typing required.

That's the power of QR Codes in presentations: they remove the friction between what you project and what the audience actually accesses. Use them to share handouts, open feedback forms, showcase a portfolio, drive social media follows, or track engagement with UTM parameters.

This guide covers how to create, insert, and correctly size a QR Code for projection in PowerPoint and Google Slides.

Why use a QR Code in a presentation?

Goal Recommended QR type
Download a PDF handout Static or dynamic
Open a feedback form Static or dynamic
Link-in-bio with multiple links Dynamic
Join a WhatsApp/Telegram group Static
Track how many people scanned per event Dynamic with UTM
Change the destination later (same slide) Dynamic

Use a dynamic QR Code whenever you need to track scans or want the flexibility to update the destination without editing the slide. Learn more in trackable QR Code with UTM and Google Analytics and in how to create a QR Code for free.

Method 1 — Generate on Code2Scan and insert as an image (recommended)

This is the simplest method and works with any version of PowerPoint and Google Slides.

Step by step

  1. Go to the Code2Scan QR Code generator.
  2. Paste your destination URL (PDF, form, landing page, etc.).
  3. Customize the color and add a logo if you want — keep high contrast.
  4. Download as PNG (great for digital slides) or SVG (ideal for printing banners alongside the presentation). See the difference in SVG vectorial QR Code vs PNG.
  5. In PowerPoint: Insert → Pictures → This Device → select the file.
  6. In Google Slides: Insert → Image → Upload from computer.
  7. Resize while holding Shift to maintain the aspect ratio.

Minimum size for projection

Golden rule for projection: the QR Code should be at least 8% of the projected slide width. On a 10-foot screen, that translates to roughly 10 inches of the projected QR Code.

In practice, on a 16:9 slide (13.3 × 7.5 inches in PowerPoint), place the QR at a minimum of 2 × 2 inches in the file — but bigger is always better for reading at distance. The maximum scanning distance is approximately 10× the QR Code's projected side length. See more in minimum QR Code size.

Method 2 — QR4Office add-in (PowerPoint)

If you prefer to generate the QR without leaving PowerPoint:

  1. Go to Insert → Add-ins → Get Add-ins.
  2. Search for "QR4Office" and install it.
  3. Paste the URL in the side panel and click Insert.
  4. The QR is inserted as an object — resize to at least 2 × 2 inches.

Limitation: QR4Office only generates static QR Codes and doesn't support advanced color customization. For dynamic, trackable, or logo QR Codes, Method 1 is the better choice.

Method 3 — Google Slides via Insert Image by URL

  1. Copy the PNG image URL generated by Code2Scan (or download and upload directly).
  2. In Google Slides: Insert → Image → By URL.
  3. Paste the URL and click Insert.

For team-shared presentations, saving the file to Google Drive first ensures the image remains visible to all collaborators.

Where to position the QR Code on the slide

  • Bottom-right corner of your closing slide — that's where the eye naturally lands.
  • Dedicated QR slide (last slide) — make the QR large, with a short text above: "Scan to download the materials."
  • All slides (small footer) — useful for webinars where attendees join at different times.

Tips for a successful audience scan

  • White border around the QR — keep the quiet zone (white margin) at least 4 modules wide.
  • High contrast — dark QR on a light background. Avoid a colorful QR on a colorful background.
  • Leave the slide up for at least 15 seconds — give people who were taking notes a chance.
  • Say it out loud — "Scan this now with your phone camera."
  • Test beforehand — project the slide on a screen and scan from the actual audience distance.

Common mistakes

QR Code too small for projection

This is the most common error. What looks large on your laptop screen (1.2 × 1.2 inches) becomes unreadable on the big screen if the audience is 20 feet away. Follow the 8% rule and always test in the actual room before presenting.

Very long URL in a static QR Code

The longer the URL, the denser the QR Code and the harder it is to read at a distance. Use a dynamic QR Code — it stores a short internal URL and redirects to the long one. Result: simpler QR, easier scanning.

Downloading the QR at low resolution

A 150 px PNG looks pixelated when enlarged on a slide. Always download at 300 px or more (or use SVG) to keep it sharp.

Using a static QR Code when the link may change

If the event repeats or the materials get updated, you'll have to redo the slide. With a dynamic QR Code, just change the destination in the dashboard — the QR already inserted continues to work. See more in trackable QR Code with UTM.

Low-contrast QR Code color

A gray QR on a beige background, or a colorful QR without enough contrast, fails to scan. Always keep a minimum contrast ratio of 4:1 between the dark modules and the light background.

Summary

  1. Generate the QR at Code2Scan and insert it as a PNG or SVG image.
  2. Minimum size on the slide: 2 × 2 inches — and always project to test.
  3. Use dynamic if you want to track scans or change the link later.
  4. White quiet zone + high contrast = readable QR on the projection.
  5. Keep the slide visible for at least 15 seconds and ask the audience to scan.

Create your QR Code for presentations now — free, no sign-up — at /en/qr-code-generator. Download as PNG or SVG and insert directly into PowerPoint or Google Slides.