For other options/backends, see go run . I work on Angular, React, Electron, JavaScript, CSS, SCSS, Bootstrap, NodeJS. 'url' => 'https://picsum.photos/1024/1024?nocache='.microtime(). Would you help me with that? My suggestion to do something like this would be one of the following: A custom webpart (would be really easy to make) that would reference an image library and display a random image thumbnail, or using the content query webpart and doing the same. In the above JavaScript, you just need to update bgm variable. They are also useful for adding other engaging effects such as a simple image gallery. We use this information to address the inquiry and respond to the question. If you wanted to target a specific ID or class, youd add something like this to the script: let item = document.getElementByID('existing'); item.existing = `