I don't get it aside. How does that help him search files on his local file system? Or is he syncing an index of his entire web history to his mobile device?
GP is using SingleFile browser extension. Which allows him to download the entire page as a single .html file. But SingleFile also allows sending that page to Karakeep directly instead of downloading it to his local file system. (if he's hosting karakeep on a NAS on his network). He can then use the mobile app or Karakeep web UI to search and view that archived page. Karakeep does the indexing. (Including auto-tagging via LLM)