I am using Visual Composer / WPBackery to display a "services-image" block on my page. Visual Composer or my theme seems to be using the class="attachment-large size-large" by default which is causing my images to be larger than what is required.
A recent test on GTMetrix showed The following images are resized in HTML or CSS. Serving scaled images could save 226.2KiB
I would like to edit the Visual Composer plugin or the theme files in order to use the class="attachment-small size-small"
This is what is shown on my page:
<div class="wpb_column vc_column_container vc_col-sm-4"><div class="vc_column-inner"><div class="wpb_wrapper">
<figure class="wpb_content_element overlay-info no-mask ">
<img width="768" height="512" src="http://rdz.nzl.mybluehost.me/wp-content/uploads/2020/02/YOUR-EXPERIENCE-1024x683.jpg" class="attachment-large size-large" alt="">
<figcaption class="d-flex">
<div class="align-self-center mx-auto">
<h4 class="mb-0 text-uppercase letterspace-4">YOUR EXPERIENCE</h4>
</div>
</figcaption>
</figure>
<div class="wpb_text_column wpb_content_element ">
<div class="wpb_wrapper">
<p style="text-align: center;">More than anything, I aspire to enhance your experience.<br>
I do that by having fun with you.<br>
It is the single most important aspect of your day.</p>
</div>
</div>
</div></div></div>
the image being used is http://rdz.nzl.mybluehost.me/wp-content/uploads/2020/02/YOUR-EXPERIENCE-1024x683.jpg I would like to use the optimized /resized version of this image instead.
Please assist me in where I can change the default image attachment class which Visual Composer / WPBackery uses?
Thank you