SF-LoadingScreen replaces the default loading screen with a page of your own: server name, slogan, logo and accent colour. The background takes a full-screen video — local file, direct URL or YouTube link — or, failing that, an image slideshow whose pace you set. A music playlist with starting volume and autoplay runs alongside the load. Everything lives in one file, `html/config.js`. There is no code to touch. A diagnostic mode prints missing files on screen, which makes the install verifiable on the first try.