Scan-Safe Sizing
Checks physical module size before you print and gives an exact recommended width.
Print-ready, directly in your browser
QR Code to STL Generator
Turn URLs, text, WiFi details, or existing QR images into print-ready STL files with automatic module sizing and an interactive 3D preview.
No Login
Runs Locally
Instant Download
Your 3D preview appears here
Enter content to generate a model.
50 × 50 mm
Recommended nozzle0.4 mm
Change color atlayer 11
Quiet zone4 modules
Configure your model
Create your QR code STL
Choose the QR content, set the physical dimensions, and download a clean printable model.
Watertight STL
Builds a closed mesh with merged QR regions for reliable slicing and compact file sizes.
Image to QR Rebuild
Reads an uploaded QR image and regenerates a clean, standard matrix for the 3D model.
Three simple steps
How to create a 3D printable QR code
Add QR content
Paste a URL or text, enter WiFi details, or upload an existing QR image.
Check print sizing
Set the model dimensions and use the live module-size guidance for your nozzle.
Download and print
Download the binary STL, slice it flat, and change filament at the displayed layer.
Helpful answers
QR Code to STL Generator FAQ
How does the QR Code to STL Generator work?
The tool creates a standard QR matrix in your browser, converts dark modules into merged raised regions, adds a solid base, and writes the final geometry as a binary STL file.
What module size is suitable for a 0.4 mm nozzle?
The generator uses twice the selected nozzle width as the minimum target, so a 0.4 mm nozzle starts with a recommended module size of 0.8 mm.
How do I print the QR code in two colors?
Print the base first, pause at the displayed color-change layer, load the contrasting filament, and resume for the raised QR modules.
Does the tool upload my QR content?
Generation, preview, image reading, and STL creation run locally in your browser.