Top 10 Lazy Loading JavaScript Libraries Of 2017

Page speed is one of the most important ranking factors in today’s search engine optimization. In this blog post, I’d like to introduce 10 best JavaScript libraries to lazy load large images (and other DOM elements) within the document that makes it possible to significantly increase page speed and enhance your page rankings. I hope you like it and help me spread the world.

Top 10 Image Lazy Load JavaScript Libraries:

10. Lazy Load iFrame Embedded Content With JavaScript – lazyframe.js

lazyframe

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lazyframe.js is a native JavaScript library used to delay the loading of iframe content for Google Maps, Youtube/Vimeo/Vine videos and so on.


9. Lightweight JS Library For Lazy Loading DOM Elements – Couch

Lightweight JS Library For Lazy Loading DOM Elements - Couch

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Couch is a small standalone JavaScript library used to lazy load any DOM elements with a subtle slide animation powered by CSS3 transitions and transforms.


8. Vanilla JavaScript Library For Image Lazy Load – vanillaLazyLoad

vanillaLazyLoad

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Yet another vanilla JavaScript library that helps delay the loading of images until they become visible in the viewport. Helpful to speed up page loading times and decrease traffic. Also supports background images.


7. Responsive Image Lazy Load JavaScript Library – responsivelyLazy

responsivelyLazy

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responsivelyLazy is an ultra-light javascript library which allows you to delay the loading of appropriate images based on the width of their parent containers. Help you speed up the initial page load time to provide better user experience.


6. Lightweight Retina Ready JS Image Lazy Load Library – Layzr.js

Layzr.js

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Layzr.js is a lightweight yet robust JavaScript library that delay the loading of images until they’re scrolled into view.


5. Responsive Image Lazy Load JS Library – lazysizes

Responsive Image Lazy Load JS Library - lazysizes

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lazysizes is an easy yet robust JS library used to delay the loading of images (iframes, scripts, etc) until they come into view, as well as loading the appropriate sources according to the breakpoints defined in the markup to fit any screen size. Designed for high performance websites to improve the page load time and to save the bandwidth.


4. Tiny JavaScript Library For Progressive Image Lazy Loading – Progressively

progressively

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Just another fast, dependency-free JavaScript library used to lazy load images with a progressive blur loading effect as you seen on Medium or Instagram.


3. Simplest Image Lazy Load with Pure JavaScript – lazy.js

Simplest Image Lazy Load with Pure JavaScript - lazy.js

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Lazy.js is a minimalist JavaScript solution to delay the loading of images until they come into view.


2. A Tiny Javascript Library To Lazy Load Images

A Tiny Javascript Library To Lazy Load Images

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A small Javascript library (~2kb minified) used to delay the load of images until they come into view.


1. Easy Image Lazy Loading with blazy.js

Easy Image Lazy Loading with blazy.js

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blazy.js is a lightweight & easy-to-use script to delay the loading of images until they enter the viewport. Helpful to save the bandwidth and reduce the server requests.