Here is a helpful function for WordPress theme designers and developers. You can remove the Featured Image controls when creating a post, in case you have something custom that you want to use.
Get the function

Another small performance gain that designers and developers should employ is specifying their image width and height. This article explains why setting the dimensions of your images helps you and the theory behind it. See the best practice.

Welcome to another article on Building Better Web Pages. This article series comprehensively covers building an HTML document: easily learned, but rarely perfected.

Today’s article covers CSS Sprites. This also means that it covers Javascript preload images, rollover images, hover images, and the old rookie question of, “why do my images blink when I hover over them?” The goal of this article, other than helping you build better web pages, is to catch search engine queries in the preceding sentence and help steer those people in the correct direction.