Native Lazyloading vs SPC Lazyloading
Lazy loading is a powerful technique to improve your website's performance by delaying the loading of off-screen images, iframes, and videos until they're needed. This feature significantly reduces initial page load time and conserves bandwidth, especially for content-heavy pages. Super Page Cache uses the Lazysizes library to provide Lazy loading.
Here are the key differences between using native browser lazy loading and the solution Super Page Cache comes with:
- Native: Depends on browser implementation, which can be overly conservative.
- Our Solution: Uses a fine-tuned approach to lazy load more aggressively, resulting in faster initial page loads.
- Native: Primarily focused on images and iframes.
- Our Solution: Handles images, iframes, videos, and CSS background images, providing more comprehensive optimization.
- Native: Works best with images properly set up in the WordPress media library.
- Our Solution: Works with all images, including those added directly to content or from external sources.
- Native: Does not support lazy loading of CSS background images.
- Our Solution: Fully supports lazy loading of background images, crucial for many modern designs.
- Native: Limited options for customization.
- Our Solution: Offers extensive customization including exclusions, skip counts for above-the-fold content, and more.
- Native: Implementation can vary across browsers.
- Our Solution: Provides consistent behavior across all major browsers.
- Native: May lazy load important above-the-fold content, potentially harming user experience.
- Our Solution: Allows you to specify how many images to skip or exclude critical content from lazy loading.
- Native: Support for WebP varies by browser.
- Our Solution: Fully supports WebP, ensuring optimal performance with this efficient image format.
- Native: Basic improvement in loading times.
- Our Solution: Optimized to improve Core Web Vitals scores, particularly Largest Contentful Paint (LCP) and Cumulative Layout Shift (CLS).