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Web Performance Optimization & Lighthouse · Lesson

Image CDNs and Delivery Optimization

Learn how image CDNs automate format negotiation, resizing, and compression at the edge so every device gets the smallest possible image without manual asset pipelines.

The Manual Pipeline Problem

Hand-exporting images in multiple sizes and formats is tedious and error-prone. An image CDN transforms images on demand at the edge, so you upload one master and serve perfectly tuned variants automatically.

URL-Based Transformations

Most image CDNs expose transformations as URL parameters. Changing the URL changes the output, with results cached at the edge.

https://cdn.example.com/hero.jpg?w=800&q=70&format=auto

All lessons in this course

  1. Efficient Image Formats
  2. Responsive Images & Lazy Loading
  3. Video and Animation Performance
  4. Image CDNs and Delivery Optimization
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