Videoff — detect & archive web videos

About

Unlike typical video downloaders that require pasting a URL into a website or only capture basic page elements, Videoff operates directly within your browser for more thorough results. It performs deep detection by examining the shadow DOM, iframes, and intercepted network requests to locate HLS and DASH manifests that other tools completely overlook. The same extension functions on both desktop and Firefox Android, offering mobile support that most alternatives ignore. It also includes an adaptable system with ready support for sites like YouTube, Vimeo, X, and TikTok, which can be easily expanded.