Phone QR code — 720px PNG

Worked example

Make a phone number QR as a 720 px PNG for print up to about A6: enter the number in international format, then scan the download.

A plumber's van sticker or a business card works well, because the code opens the dialer with the number filled in and waits for the person to press call, so no accidental calls are placed. Print the number as text beside the code for people who read it aloud or type it.

The phone number code is about 29 × 29 modules at level H, so after the default 18 px margin 684 of the 720 px hold the pattern and one module is about 23.6 px. Printed at 300 dpi the phone number code is 61 mm wide (2.00 mm modules), fits an A6 card of 105 × 148 mm and reads from about 61 cm.

Common mistake with a 720 px phone number code: trusting the PNG's built-in border as the quiet zone. On the phone number code the default 18 px margin is only 0.8 modules, while scanners want about 4 (94 px). The slider stops at 48 px (2.0 modules), so leave a blank border of at least 8.0 mm around the printed phone number code in your layout, and keep contrast at 4.5:1 or better, since the tool refuses to export below that.

The phone number code has only 29 modules, so at 720 px the default level H (about 30% recovery) usually tolerates the centred logo at 22% width.

Check the 720 px phone number file before using it: scan the download with two different phones, and for a print do it from about 61 cm, ten times its 61 mm width. At 720 px the result should be this: the dialer shows +12025550123 ready to call; do not press call on an example number.

+12025550123

PNG · 720 × 720 px

tel:+12025550123

A 720 px phone number PNG prints 61 mm wide at 300 dpi, so judge it at that size before sending it to print.