Plain image with optional round corners and shadow
Page speed impact:
Low, unless you add a very large and unoptimized image, which may have a Medium or even High impact, especially if placed above-the-fold. Disabling lazy loading on the first visible image above the fold is recommended, because that's the first part of the content that needs to load fast. Enable lazy loading for all the rest.
Available in pages:
Yes
Reserved block class:
img
Resources:
css/_base.css a core component included in main.css