FrontendBeginner
Lazy Loading
PronunciationLAY-zee LOH-ding
Definition
A performance strategy where non-critical resources, like images or components, are loaded only when they are needed rather than upfront.
Where you hear it
In web performance reviews, UI architecture discussions, and bundle optimization tasks.
Examples
We implemented lazy loading for all images below the fold to improve initial page load speed.
The application uses lazy loading to fetch heavy dashboard components only when the user visits that specific tab.
Common mistake
Thinking lazy loading solves all performance issues without considering the layout shifts it might cause when content finally loads.