# Lazy loading > Loading content only when it is needed, such as the remaining frames of a spin. Also known as: lazy load. Category: Software. Lazy loading delays loading content until it is needed, which reduces the initial weight of a page. Content outside the first view loads only when the visitor needs it. ## How PhotoRobot uses it The [PhotoRobot Viewer](https://www.photorobot.com/glossary/photorobot-viewer) loads only the first frame of a spin when the page opens and the rest when the visitor starts to rotate it. Covered in module [B21](https://www.photorobot.com/academy/curriculum#b21-viewer-layouts). ## Related terms - [PhotoRobot Viewer](https://www.photorobot.com/glossary/photorobot-viewer): PhotoRobot's hosted viewer for image galleries, 360 spins, hotspots and panoramas on websites and e-shops. - [Viewer embedding](https://www.photorobot.com/glossary/viewer-embedding): Placing the PhotoRobot Viewer on a product page, as an iframe or with the JavaScript SDK. - [CDN (content delivery network)](https://www.photorobot.com/glossary/cdn): A network of servers worldwide that delivers files from a location close to each visitor. ## Where this term appears on photorobot.com Mentioned on 1 page. Most relevant: - [360° Product Photography - Content Formats and Production](https://www.photorobot.com/blog/360-product-photography): It enables immersive interaction, lazy loading, and comes with a range of SEO benefits.