URL QR code — 720px PNG

Worked example

Make a URL QR as a 720 px PNG for print up to about A6: enter a full https:// address, then scan the download.

A café printing a table card with a menu link should use the final address, not a redirect that may expire. A static code cannot be edited after printing, so everything printed commits you to that URL. If the page might move, point the code at a stable address you control and redirect from there.

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

The URL 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 URL 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 browser opens https://chatcument.com directly, with no extra redirect or warning page.

https://chatcument.com

PNG · 720 × 720 px

https://chatcument.com

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