Why so Slow? Exercises

This demo will explore some common mistakes web developer make. Additionally, we look at how to use various tools to explore what is going on in your website and to speed it up.

Slow Images

The two photos appear to be the same size. But the first took much longer to load than the second. Click on them and see if you can guess why.

Again, two photos appear to be the same size and the first took much longer to load than the second. Click on them to see if you can guess why.

Some Tools

Chrome's Developer Tools

Google's PageSpeed Insights