Skip to content

5 case studies of finding and fixing JavaScript performance bottlenecks

Updated: at 05:11 PM

Learn from Paul Irish as he investigates performance problems at CNET,, Wikipedia and Google Play

The 1000/100/6 model establishes strong bounds of focus for investigating performance concerns. With a focus on load, input latency, and fidelity of animation and scrolling, we are drilled into the aspects that most directly impact the end user experience.

In the audits below, we’ll investigate a few sites’ performance from this POV.

Read the case studies at