Reducing the amount of clicks required to achieve an action
With the cost of browsing the web
the most costly component of a website is the content
Knowing how to reduce excess images, text and media can be the difference between a 50KB design and a 2MB layout of crippling intensity.
Less is more on a mobile device; less content equals more likely to read.
If your design is simply a modification/adaptation of your existing layout (the first method of delivery), you could decide to hide unnecessary text, images or media
large CSS background images or byte-heavy infographics can be problematic.
Reducing the resolution and dimensions of your images can literally be the difference between 50KB and 500KB — bandwidth consumption that’s worth saving.
With the lack of a mouse and the way our hands gesture to instigate actions and reactions, the traditional interaction patterns we’re accustomed to, such as hovering over a link (for example), is different.