Best Practices for Designing and Printing Scannable QR Codes
Sally Wright
Feb 5, 2026
QR codes have become an essential tool for businesses and marketers looking to bridge the gap between physical and digital experiences. From product packaging to event tickets and marketing campaigns, QR codes provide a quick and convenient way for users to access information using their smartphones.
However, designing and printing QR codes that are easily scannable requires attention to detail and a good understanding of best practices.
In this blog, we will explore the key principles for creating effective QR codes and ensure they work flawlessly once printed.
Understanding QR Code Basics
Before diving into design tips, it's important to understand the fundamentals of QR codes. QR codes are two-dimensional barcodes that store data which can be scanned by a smartphone camera or QR reader. They come in two primary forms:
- Static QR Codes: Contain fixed data that cannot be changed once generated.
- Dynamic QR Codes: Allow data to be updated after printing and often provide tracking analytics.
Every QR code consists of patterns of black and white squares, including position markers that guide scanners and a "quiet zone". A clear margin around the code that helps devices recognize it.
Designing Scannable QR Codes: Best Practices
Choose the Right Size
Size is a critical factor in ensuring QR codes can be scanned reliably. As a rule of thumb, QR codes should be at least 2 x 2 cm (approximately 0.8 x 0.8 inches) when printed. The required size increases with the scanning distance.
For example, a QR code on a billboard will need to be significantly larger than one on a business card.
Maintain Sufficient Contrast
High contrast between the QR code and its background is essential.
The most common combination is a black QR code on a white background, which provides the clearest contrast. Avoid light colors or backgrounds with complex patterns, as these can confuse the scanner and reduce readability.
Simplify the Design
While it’s tempting to customize QR codes with logos or artistic elements, too much customization can compromise their scannability.
When adding logos, ensure they don’t cover essential data modules or positioning patterns. Use QR code generators that support embedded logos and verify that error correction settings compensate for any data obscured by design elements.
Use Appropriate Error Correction Levels
QR codes include error correction capabilities, which allow the code to be read even if partially damaged or obscured.
Error correction levels range from Low (7%) to High (30%). Higher error correction is recommended when adding logos or printing on surfaces prone to wear or damage.
Maintain a Clear Quiet Zone
The quiet zone is the blank margin surrounding the QR code and is critical for scanner recognition. Make sure to leave at least four modules (smallest black or white square units of the QR code) of space on all sides without any text, logos, or graphics.
Printing Considerations for QR Codes
Select Suitable Materials
The material on which the QR code is printed affects its scanability. Smooth, matte surfaces tend to work best, while reflective, transparent, or textured materials can interfere with scanning. For example, printing QR codes on glossy or metallic surfaces can create glare that confuses the scanner.
Ensure High Print Resolution
Sharp edges and clean lines are crucial for scanning. Use printing resolutions of at least 300 DPI to avoid pixelation or blurring, which can make the QR code unreadable. Avoid any distortion or stretching of the QR code image.
Use Effective Colors in Printing
While black and white remains the most reliable, colored QR codes can work if the contrast remains strong. Avoid gradients, low-contrast colors, and transparent overlays. When using colored QR codes, test them thoroughly on the intended material.
Test Printed QR Codes Thoroughly
Before mass printing, test the QR code on all intended surfaces using multiple devices and scanning apps. Testing ensures your QR code scans quickly and correctly under various conditions and lighting.
Common Mistakes to Avoid
Here are some mistakes you need to avoid when generating QR codes:
- Over-customization that disrupts the QR code’s pattern.
- Too small sizes, making scanning difficult.
- Ignoring the quiet zone, causing interference with surrounding elements.
- Poor print quality or unsuitable materials.
- Skipping testing, which can lead to non-functional codes in the final product.
Conclusion
Designing and printing scannable QR codes is both an art and a science. By following these best practices, you can create QR codes that work and enhance your customers’ experience.
At QR Codes Unlimited, we provide tools and services to help you generate optimized QR codes tailored to your needs.
Start designing your scannable QR codes today and unlock new possibilities for your brand.
