Chirag Swadia

WordPress Lazy Load plugin enhances your page load speed by not loading the images until they are visible to the user.
This works for all your images, whether they are in post content, sidebar or even any custom image you might have added in your blog.
There are no settings or code changes required on your end. Just activate the plugin and you are good to go!

WordPress Lazy Load

WordPress Lazy Load plugin enhances your page load speed by not loading the images until they are visible to the user

GTmetrix

GTmetrix has created GTmetrix for WordPress – a WordPress plugin that actively keeps track of your WP install and sends you alerts if your site falls below certain criteria.
Run analyses, schedule reports on a daily, weekly or monthly basis, and receive alerts about the status of your site all from within your WordPress Admin!

GTmetrix for WordPress

Plugin isn't showing the toolbar link in the latest version of WP now :(

Fantastic plugin but...

GTmetrix can help you develop a faster, more efficient, and all-around improved website experience for your users. Your users will love you for it.

WordPress Lazy Load vs GTmetrix for WordPress