Best Size and DPI for Printing QR Codes: A Complete Guide

Introduction

Printing QR codes is different from using them on screen. Get the size and resolution wrong, and your codes may fail to scan or look blurry. This guide covers the best size and DPI for printing QR codes on common materials so your campaigns and materials perform as intended. You can create print-ready codes with our free QR code generator and download in PNG or SVG.

Minimum Size for Printed QR Codes

QR codes need to be large enough for a camera or scanner to resolve each module (the small squares). Too small, and the reader can't distinguish the pattern.

• Business cards and small print: At least 15 mm × 15 mm (about 0.6" × 0.6"); 20 mm × 20 mm (0.8" × 0.8") is safer and still looks good on a card.
• Flyers and brochures: 25 mm × 25 mm (1" × 1") or larger.
• Posters and signage: Scale up with viewing distance. A rule of thumb: the QR code should be at least 1/10 of the viewing distance (e.g. 10 cm for 1 m distance).

For more on using QR codes on cards, see our business card QR code guide.

DPI and Resolution for Print

DPI (dots per inch) affects sharpness. For professional print, use at least 300 DPI so the edges of the QR code are crisp and scanners can read the code reliably.

• 300 DPI: Standard for business cards, flyers, and most marketing print.
• Vector (SVG): Our generator supports SVG download. Vector art scales to any size without losing quality, so you can output at the printer's native resolution. Prefer SVG when your print vendor accepts it.
• PNG: If you use PNG, export at a pixel size that gives 300 DPI at the final print size. For example, a 2.5 cm × 2.5 cm (1" × 1") code at 300 DPI = 300 × 300 pixels minimum.

Size by Use Case

Business Cards

Keep the QR code between 15 mm and 25 mm per side. Leave a small margin (quiet zone) around it. Our business card guide has full design tips.

Product Packaging and Labels

Use at least 20 mm × 20 mm so customers can scan easily in store. Ensure high contrast (e.g. black on white) and avoid placing the code on curved or reflective areas that distort or glare.

Posters and Large Format

Scale the code so it's scannable from the typical viewing distance. For a poster viewed from 2–3 metres, a 10–15 cm QR code is usually sufficient. Use SVG when possible so the print shop can scale without quality loss.

Common Printing Mistakes

• Using low-resolution images: Stretching a small PNG on a large poster causes blur and scan failures.
• Ignoring quiet zone: Don't extend background graphics or text into the margin around the QR code.
• Wrong color contrast: Maintain strong contrast; test a print sample before large runs. See QR code not scanning for contrast tips.

Conclusion

Use the right physical size and resolution (300 DPI or SVG) for your print medium, and always test a sample before a full print run. Create and download your codes from our free QR code generator, and read more in our blog on QR code types and QR vs barcode.