Optimizing tweaks for a faster internet connection.

I am always wary of articles with that type of title. However, this one seems at least to have some degree of feasibility.
Nevertheless, don't expect anything huge or, indeed, anything at all.
What's more it's not particularly well written. Here's an example:

Only download the parts of the web you want by filtering all those extra images and media files. It's mostly done through your browser settings

What the heck does that mean?