Is Lazy Loading Images Performant?

I see Lazy loading implemented on lots of sites and in some cases I see it being utilised effectively. But in other cases less so and if done poorly it can actually be detrimental to a site’s performance.

This video is intended as to run through for what lazy loading is and how to use it effectively to make your website faster (and by extension, improve your customers experience).

Watch the video for the full run through but I essentially talk through:

• What is lazy loading?
• Methods of implementation
• What you should and should not lazy load
• Typical approaches I see and a demonstration of how implementing it correctly can make significant improvements to your web pages pagespeed score
• Showcase of the Pagespeed insights results from the different methods
• Advice on how to determine what should and should not be lazy loaded

I hope this is helpful and if you have any questions then please feel free to drop me a comment.