Most of these downloader tools operate on a similar premise:

Most tools or browser extensions found via that search claim to:

In reality, almost all such tools fall into these categories:

: The downloader often provides users with the option to choose the quality of the video they wish to download, catering to different internet speeds and storage needs.

For language learners or accessibility needs, the downloader must grab closed captions and embed metadata (poster art, episode numbers) for Plex or Jellyfin media servers.