Shorter URLs, Cleaner QR Codes: Reduce Density Without Losing Function

1. Every Character Costs Modules

Byte mode spends 8 bits per character. A 120-character tracking URL can push a code to Version 7 or higher, shrinking each module at a fixed print size. A 25-character URL may fit Version 2 or 3.

2. Techniques

* Use a short, memorable path on your own domain (for example example.com/menu). * Drop unnecessary parameters and move tracking to the server. * Use alphanumeric mode: an uppercase-only URL such as HTTPS://EXAMPLE.COM/MENU costs about 5.5 bits per character. This only works if your host treats the path case-insensitively. * Remove the trailing slash and unneeded subdomains.

3. Check Before Printing

Generate the code, count the modules, and measure the final module width. Target at least 0.5 mm for packaging and 0.35 mm as an absolute floor on smooth stock.