Image Optimisation for the Modern Web

8-part series to deep dive into production-scale Image Optimisation techniques

Hi,

Frontend system design mock interviews often involve discussion around building image-heavy applications at scale. It is a common topic across multiple kinds of applications: e-commerce, travel, social media feeds, and more.

To help with this, devtools.tech recently added an 8-part article series on “Image Optimisation for the Modern Web” as part of the frontend system design content.

The full series covers:

1. Foundations: Why image optimisation matters & how browsers load images
2. Measuring image performance with Core Web Vitals
3. Reducing image bytes
4. Responsive images: srcset, sizes, and picture tag
5. Lazy loading images
6. Prioritising critical images
7. Image CDNs and delivery infrastructure
8. Production monitoring and the long tail

The goal was to make the series practical and production-oriented instead of just covering isolated APIs.