Remarkable
Remarkable is a simple extension that automatically keeps your bookmarks clean & up-to-date.
Usage
Clean bookmarks
Moves dead bookmarks (e.g. non-existent pages) to a folder called "Trash" for you to review. No bookmarks will be deleted.
Refresh bookmarks
Refreshes your bookmark favicons. All pages will be slowly opened and closed in batches, so can take some time. You can configure the batch size in the settings.
Privacy & Permissions
Remarkable doesn't receive or store any data about you or your bookmarks. The Chrome Storage API permission is simply used to allow for configuration of the batch size in the extension settings.