PLAN YOUR PHYSICAL QR CODE

3D QR Code Workflow

Choose the next step from your job: generate a first print, export a file, select printer settings, or investigate a failed scan.

What do you need to do next?

Make your first printed QR code

Generate a raised model on the page, prepare a two-color print, and test it with your intended camera.

Open the 3D print QR code generator

Export STL with known dimensions

Use the direct converter when you already know your content, width, backing thickness, and raised height.

Open the QR to STL converter

Choose a printer-aware preset

Use the advanced builder for job selection, printer profiles, recommendations, and raised or recessed geometry.

Open QR code printer presets

Work through a print problem

Read the detailed guide when you need more explanation of size, contrast, material, slicing, or a physical scan test.

Read the printing guide

Plan around the surface and scanner

A handheld tag, an engraved plate, and a wall sign do not share one minimum size. Decide who scans the code, from what distance, in what light, and whether the surface will be glossy, textured, cleaned, or exposed to wear. Keep the final URL or text short before choosing physical width.

Printed tags and labels

Use a raised STL with a flat backing and matching reference image. Check the square size, quiet border, and first sample before making copies.

Recessed or engraved surfaces

Choose a geometry and finish that can maintain contrast. Use the advanced builder for a recessed model; CNC and laser toolpaths are not included.

Signs and displays

Choose size from the expected scanning distance and mounting angle. Test at the final location instead of relying on a close-up desk scan.

Keep the model and its references together

STL: The solid geometry for a slicer. Preserve millimeter dimensions and inspect the extrusion paths. Assign filament colors and generate toolpaths in your slicer.
SVG: The clean vector reference. Compare its squares and clear margins with the physical print, or use it when you only need flat artwork.
PNG: The image preview for scan comparison, documentation, and sharing. It is a reference image, not a replacement for the saved 3D geometry.

Make the first physical scan part of the job

Digital encoding and mesh checks are useful before printing, but cannot measure your filament, lighting, or camera. Print one final-size sample, use a light base with dark code features, preserve the quiet zone, and compare the exact decoded content with the reference.

Record printer and slicer settings, material and finish, scanner, lighting, distance, angle, time to decode, and failures. Change one variable at a time. PrivQR has not published physical test measurements for the default models.

Download the blank scan-test record

Workflow questions

Where should I start with a 3D QR code?

Start with what you are making and how it will be scanned. Use the print generator for a first raised QR sample, the direct converter for known dimensions, or the advanced builder for printer-aware presets and recessed geometry.

Is a 3D QR code a different barcode format?

Here, 3D QR means standard QR data turned into physical geometry. The pattern still needs a clear border and optical contrast. Relief and an attractive 3D model do not replace the need to scan the finished object.

Should I use STL, SVG, or PNG?

Use STL for slicing the solid model, SVG as a clean vector reference or flat artwork, and PNG for a preview or documentation. Keep the files tied to the same content. The STL does not include filament colors or printer toolpaths.

If the receiving system needs Code 128, EAN-13, or UPC-A linear bars, use the 3D print barcode workflow.