When you write a blog post, you can choose which picture to be featured when sharing the post, on Facebook for example. The featured image is also shown in the new blog posts feed and in news here on Nouw.
The chosen picture is marked with a yellow tick at the bottom of the page. Remember that only images with 600 pixels and over can be seen! You can also choose to feature an image that isn’t already in the post, where it says ”drop other image here or choose file”.