The developers of the JetPack WordPress plugin decided to put a layer above the featured image thumbnails of “related posts”. This gives the images a faded look which you may not like. The CSS snippet shared here will help you disable this feature.
Automattic’s Jetpack plugin has been around for a long time and grows with every new version. But why would anyone install such a massive plugin when there are smaller alternatives? This article looks at six reasons why Jetpack is still the go-to choice for the majority of WordPress-based sites.