Use this add-on to automatically mirror hotlinked images in posts (and other supported content types), storing them as attachments to protect your content if the original image host goes offline or deletes the image.
A rebuild tool is also bundled within the add-on that can be accessed via the admin panel or via the command line to retrospectively mirror images.
Features:
Automatically mirror images when content is saved.
Supports posts, direct messages, profile posts, and profile post comments.
Domain allow / block list support for granular control.

This add-on was initially funded by Cameraderie.org.
A rebuild tool is also bundled within the add-on that can be accessed via the admin panel or via the command line to retrospectively mirror images.
Features:
Automatically mirror images when content is saved.
Supports posts, direct messages, profile posts, and profile post comments.
Domain allow / block list support for granular control.

This add-on was initially funded by Cameraderie.org.