Can your customers read your website on their phone?

A site that looks fine on your computer can be hard to use on a phone outdoors. Pale grey text almost disappears in daylight, prices are too small to read, some sites switch pinch-to-zoom off, and buttons sit so close that a thumb aimed at Book lands on Cancel.

Try it: open your website on your phone outside or with the brightness down, read your prices and opening times, then try to pinch to zoom.