3D printed QR code generator
Make a QR code STL that really scans: type a link, your Wi-Fi details, a phone number or an email, choose a plate, keychain or sign, and download a two-colour 3D print. Everything stays in your browser.
Free for personal use. Selling prints of what you make? Commercial License.
How to 3D print a QR code that scans
- Choose what it opens. A website link, Wi-Fi network (guests join without typing the password), a phone number, an SMS or an email.
- Pick a style. A plate for walls, menus and product boxes, a keychain with a ring tab, or a sign with a line of text such as SCAN ME.
- Check the dot size. Keep the dots at 1.2 mm or bigger for a 0.4 mm nozzle. Shorter text and lower error correction make bigger dots.
- Test it on screen. Scan the flat code next to the 3D view with your phone before you print.
- Print in two colours. Print the base in white, then change to black at the height shown, so the raised dots are dark on a light background.
Questions
Will a 3D printed QR code scan?
Yes, if the contrast is high and the dots are big enough. Black dots on a white base work best; this generator warns you when the dots get too small to print cleanly.
Can I make a Wi-Fi QR code to 3D print?
Yes. Choose Wi-Fi, type the network name and password, and print it. Phones join the network when they scan it. The password never leaves your browser.
What size should a printed QR code be?
For a short link, 40–60 mm wide is plenty. Long text needs more dots, so make the code bigger or shorten the link.
Do I need a multi-colour printer?
No. Any printer that can pause for a filament change works: add a colour change at the height shown in the tips.