Mobile SEO is a big thing. When potential customers discover your brand, they are increasingly likely to do so on a small screen - often on their way to work, on the sofa or even queuing for coffee. If your website takes a long time to open, requires zooming in to read or fails on touch, all it takes is a few seconds for them to slide over to your competitor. This seemingly trivial gesture turns into lost revenue. In 2026, "mobile-last" is no longer just a technical flaw: it'