The Attachment Uploader plugin streamlines the process of uploading local attachments in Obsidian to cloud storage using customizable shell commands. Users can define specific formats of attachments for upload and decide whether to delete the original files after successful uploads. The plugin comes with built-in support for popular tools like uPic and Picsee, enabling efficient image hosting. It provides flexibility by allowing custom shell commands for unique workflows, making it a valuable tool for managing attachments in cloud environments.