Fixing heavy pages

Heavy pages mean that your site requires too many external resources or that those external resources are too large. When the browser tries to display your site, it first has to download those additional resources, which takes time.

Measuring

Use Google PageSpeed Insights and GTmetrix. These tools will give recommendations to improve performance by reducing the size and the amount of external resources.

Not all of these recommendations make sense, but as a whole they will usually improve performance a lot.

Fixing big pages

A web developer can implement the recommendations from Google PageSpeed Insights and GTmetrix.