In this session, we’ll explore how to optimise images for websites built on the Umbraco CMS platform, focusing on versions 13 and 15. We'll cover essential techniques such as image cropping, sizing, and format conversion (including WebP) to enhance performance without compromising quality. Key topics include reducing Cumulative Layout Shift (CLS), implementing lazy loading, maintaining correct aspect ratios, and ensuring accessibility with alt descriptions.

We’ll demonstrate how to achieve these optimisations using both Umbraco’s standard Backoffice features and powerful extensions, providing a balance between automation and flexibility. By applying these best practices, you’ll improve website performance, SEO rankings, image quality, and the ease of content management—ensuring a seamless experience for both users and content editors.