A major retailer recently removed an A/B testing service from its website. Average load time improved by nine per cent. Conversions rose by ten per cent. Bounce rate also improved by four per cent, and engagement (measured by pages per session) increased by two per cent.
One of the biggest challenges we share with our clients is proving the business value of web performance. While it’s logical that faster websites mean happier customers and more revenue, it can be hard to provide absolute proof.
We previously relied on publicly available case studies, a fantastic collection of which is available at WPO Stats.
If you care about delivering an effective and profitable website, you need to care about making it fast. But the world of web performance is full of jargon that can make it inaccessible. So we thought we’d put together a glossary of some of the key terms for the uninitiated. Note that we’re focusing on definitions as they relate to web performance – some may have slightly different or broader meanings in different contexts.