The Optimagio Blog

Make every image faster, lighter, and easier to ship.

Practical guides on image optimization, modern formats, Core Web Vitals, and high-performance web delivery.

Showing posts tagged #lazy-loading · clear

Cumulative Layout Shift (CLS) 5 min read

Fix Cumulative Layout Shift: Reserve Space for Lazy-Loaded Images

Learn how to eliminate layout shifts by implementing proper aspect ratio containers for lazy-loaded images, improving your CLS scores and user experience.

June 9, 2026

Lazy Loading 5 min read

Lazy Loading Images Without Breaking CLS: A Developer's Guide

Learn how to implement lazy loading techniques that prevent cumulative layout shift (CLS) by properly setting dimensions and using modern browser-native lazy loading with fallbacks.

June 7, 2026