What Resolution Should Your QR Code Be for Print?

There are two types of QR code print failures: codes that are technically correct but print at the wrong size, and codes that look fine but were exported at insufficient resolution. Both result in codes that don't scan reliably — often discovered after a print run is already complete.

This guide gives you the exact numbers and process to avoid both failures.

SVG vs PNG: which format to use

This is the single most important decision in QR code print preparation, and the answer is almost always: use SVG.

PNG is a raster format — it's made of pixels. When you scale a PNG up beyond its native resolution, it becomes blurry. A 500×500px PNG QR code looks fine on screen but prints poorly at anything larger than about 3×3 cm at 300 DPI. If your printer asks for a 10×10 cm QR code and you send a 500px PNG, the result will be visibly degraded.

SVG (Scalable Vector Graphics) is resolution-independent. It's defined mathematically, not in pixels — which means it prints at perfect quality at any size, from a postage stamp to a billboard. Send SVG to your printer or designer and the size question becomes irrelevant.

The only time to use PNG is for digital display (websites, email, social media) where SVG may not be supported by the platform, or for very small on-screen use. Even then, export at 2× your target display size for retina screens.

DPI explained for QR codes

DPI (dots per inch) is a print specification that defines how many ink dots the printer places in each linear inch of the output. For sharp QR codes:

• 300 DPI: the standard for most commercial printing (flyers, brochures, business cards, packaging). This is your default target.
• 600 DPI: for very small QR codes (under 2 cm) or high-resolution fine art printing. Ask your printer if they support this.
• 150 DPI: acceptable for large-format printing (banners, billboards) where the viewing distance is significant. At 3 metres away, 150 DPI is indistinguishable from 300 DPI.

If you must use PNG instead of SVG, here's how to calculate the required pixel dimensions: Target size in inches × DPI = Required pixels. For a 5 cm (≈2 inches) QR code at 300 DPI: 2 × 300 = 600 pixels minimum. For a 10 cm code: 4 × 300 = 1,200 pixels minimum.

Minimum size by use case

See the minimum size help guide for the full breakdown with additional use cases.

The 1:10 scanning distance rule

A practical rule of thumb used by print professionals: the maximum reliable scanning distance is approximately 10 times the width of the QR code. A 3 cm code scans reliably from up to 30 cm. A 10 cm code scans from up to 1 metre.

Apply this in reverse: if you need a code to be scanned from 2 metres away (a window display), the code should be at least 20 cm wide. If it needs to scan from 5 metres (a roadside banner), you need 50 cm minimum.

How to test before printing

Never approve a print run without a physical proof. The test process:

1. Print one copy at the exact intended size on the intended material (paper type matters — glossy vs matte affects contrast).
2. Scan from the expected scanning distance (arm's length for table cards, 50 cm for wall signs).
3. Test on at least three devices: a current iPhone, a current Android, and an older smartphone if available.
4. Check the destination loads correctly and within 3 seconds on a cellular data connection (no WiFi).
5. Check that the quiet zone (white border) is intact and not cut off by your print bleed or design elements.

Common print mistakes

• Cropping the quiet zone: the white border around the QR code is part of the specification. Never let design elements encroach on it. Maintain at least 4 module widths of clear space on all sides.
• Printing on a coloured background without a white margin: if the page background is dark, you must add a white rectangle behind the QR code.
• Using a low-res PNG from a website screenshot: always export from Unqode SmartQR directly, never screenshot a QR code from a browser.
• Not accounting for bleed: if the QR code is near the edge of a printed item, add bleed correctly. The code itself should never be within 5 mm of the trim edge.

More on QR code design best practices in the 8 design mistakes article and the design best practices guide.