Using a placeholder image in the src attribute (like a tiny 1px transparent GIF).
: Most modern browsers support a simple loading="lazy" attribute directly in the tag. <img data-lazy-fallback="1" src="//alltorrents....
Storing the actual image URL in a "data" attribute (e.g., data-src or your data-lazy-fallback ). Using a placeholder image in the src attribute
A script then swaps the placeholder for the real image once it enters the user's view. Why You See This in Code <img data-lazy-fallback="1" src="//alltorrents....
For more technical details on implementation, you can explore the MDN Web Docs on Lazy Loading or web.dev's guide to browser-level lazy loading .
: Only essential "above-the-fold" content loads immediately.