Glossary
What is Lazy Loading?
Lazy Loading is a performance optimization technique that delays the loading of non-critical resources (like images and videos) until they\'re actually needed—typically when they\'re about to enter the user\'s viewport. This reduces initial page load time and saves bandwidth for users who don\'t scroll to see all content.
Lazy loading is one of the most effective performance optimizations for image-heavy websites.
- Viewport-Based Loading: Images below the fold aren\'t loaded until the user scrolls to them. If a user leaves the page before scrolling down, those images never download, saving bandwidth and loading time.
- Core Web Vitals Impact: By loading fewer resources upfront, lazy loading improves Largest Contentful Paint (LCP) and Cumulative Layout Shift (CLS), both critical Google ranking factors.
- Bandwidth Savings: For users on slow mobile connections, not loading unseen images is a massive win. A 10-image gallery loads only 2-3 images instead of all 10.
- Webflow Support: Webflow automatically enables lazy loading for images in CMS collections, reducing the initial page weight automatically.
Example from Flowtrix Projects
For an e-commerce site with 200+ product images, Flowtrix implemented lazy loading via Webflow\'s built-in image settings. The initial page load dropped from 8 seconds to 2.3 seconds. Users on mobile saw even bigger improvements, resulting in a 15% increase in mobile conversions due to faster perceived performance.
Categories:
Responsive Design
Strategy
Related Terms:
Master Webflow.
Get insights directly.
Never scheduled, never spammed. Be the first to know when we publish a piece or release something cool!
.avif)
.svg)
.svg)
