Location QR code — 720px PNG

Worked example

Make a location QR as a 720 px PNG for print up to about A6: enter a latitude and longitude, then scan the download.

A guesthouse card that points guests to a side entrance gets a pin at the coordinates but not at the door, so add the entrance or floor as text beside the code. Swapped coordinates are the classic error: entered the wrong way round, 126.9780 is rejected as a latitude, which is a useful warning.

The location 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 location 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 location code: trusting the PNG's built-in border as the quiet zone. On the location 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 location code in your layout, and keep contrast at 4.5:1 or better, since the tool refuses to export below that.

The location 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 location 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 map app drops a pin on the intended spot, with latitude 37.5665 and longitude 126.9780.

37.5665, 126.9780

PNG · 720 × 720 px

geo:37.5665,126.9780

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