Images are often one of the black spots in the user experience of our websites, because they take too long to load, because they move the content when they finally load, because they don't have the right size on the screen.
In this talk we will see the different ways to make an image responsive and we will see good practices to get optimized images that improve the performance of a website. In the case of WordPres, we will see how it handles images by default and some extensions (plugins) that can help us.