CS1115/CS5002

Web Development 1

Dr Derek Bridge

School of Computer Science & Information Technology

University College Cork

Web page performance

Web page performance

A slow web site is like pushing on a door that will not open.

Measuring web page performance

General advice

These may give conflicting advice!

Reduce the number of requests

Data URIs for images

Decrease the size of each resource

Decreasing the size of images

Responsive Web Design

Other examples of <picture>

Don't forget SVGs!

Caching

Conditional loading and lazy loading