What is Lazy Loading? It is a optimization strategy that delays the loading of resources until they are actually needed or visible to the user. How it works: • The application loads only the essential "critical" parts first. • Non-essential assets (like images or script chunks) are replaced with tiny placeholders. • The system monitors user actions, such as scrolling. • When a resource enters the viewport, the browser triggers a network request to fetch the actual data and swaps the placeholder. Problems it solves: • Slow Initial Load: Prevents the page from freezing while waiting for heavy files. • Data Waste: Saves bandwidth by not downloading content the user never reaches. • High Memory Usage: Keeps the device RAM free by only processing active elements. Simple Scenario: In a gallery app, the browser only fetches the first 5 images you see. The remaining 100 images are only downloaded as you scroll down to them.
What is Lazy Loading? It is a optimization strategy that delays the… — Tech Jargon - Decoded — TG.ME
June 23, 2026 331
