This plugin is very useful and it boosts performance delaying loading of images in long web pages because images outside of viewport visible part of web page wont be loaded until the user scrolls to them. Lazy load delays loading of images in long web pages. Include bttrlazyloading css and script with the jquery. For this roundup we have compiled a list of 12 best jquery lazy load plugins which you should use to create image loading effects for your websites. The fast and lightweight lazy plugin for jquery loads specified images and backgrounds in view after the page itself and speed up your loading time through this. Following plugins are bundled with lots of handy features and are easy to use. Most of us are familiar with the lazy load plugin by mika tuupola.