QR codes on window decals
Shop windows work around the clock. A QR code decal lets passers-by act when you're closed: browse the shop, book a table, see the menu or the listing in the window.
Windows also bring the hardest scanning conditions: reflections, sunlight from behind the viewer, and glass between the camera and the code. Size, mounting and contrast decide whether the decal works.
What to link from QR codes on window decals
Shop after hours
Opens the online shop or the product in the display.
Opening hours and contact
A business page with hours, phone and directions for visitors who arrive at a closed door.
Bookings
Restaurants, salons and clinics can take bookings from the window.
Listings in the window
Estate agents and car dealers can link each card in the window to its listing.
Which QR code to use
Static codes are free and need no account, but can't be changed after printing. Dynamic codes and hosted pages can be edited at any time, count every scan, and keep working on every plan, even if you cancel.
Business page
Opening hours, address with a map link, contact buttons and amenities.
Hours, address, contact buttons and amenities, updated for holidays.
Build it in the dashboardDynamic link for the current window display
Repoint the decal when you change the display, without a new decal.
Create a dynamic codeLink list page
A mobile page of buttons: website, socials, booking, reviews and more.
Booking, menu and socials on one page behind one decal.
Build it in the dashboardHow big to print it
| Where people scan | Distance | Minimum code width |
|---|---|---|
| Door decal, up close | 60 cm (24 in) | 7.0 cm (2.7 in) |
| Window, from the pavement | 2 m (7 ft) | 23.2 cm (9.1 in) |
For a dynamic short link such as https://qrdx.dev/q/aB3dE5f at error correction Q, without the blank margin. Static Wi-Fi, vCard or long URL codes hold more data and need to be larger. Check yours with the print size calculator and the scan checker.
Placement tips
- Mount on the inside of the glass with an opaque white backing, so the code doesn't show the shop behind it.
- From the pavement, about 2 m, the code needs to be around 23 cm wide.
- South-facing windows get glare; matte vinyl and a position out of direct sun help.
- Put the decal at 1.2 to 1.5 m off the ground and add a line saying what scanning gets you.
Call-to-action copy
A code with a reason to scan beside it gets more scans than a bare code. Lines to print next to yours:
- We're closed, but our shop isn't
- Scan for opening hours
- Book a table from here
- Scan for this property's details
QR codes on window decals: FAQ
Should a window QR code go inside or outside the glass?
Inside, facing out, with a white opaque backing. It's protected from weather and vandalism, and the backing stops the shop interior showing through.
How big should a window QR code be?
About 23 cm for people on the pavement 2 m away; about 7 cm on a door where people stand close. Test in daylight and at night.
Do QR codes scan through glass?
Yes, if the glass is clean and the code has strong contrast. Tinted or reflective glass reduces contrast; make the code larger and test from outside.