by Archivarix Support on WordPress.org
Import external images in posts and pages from external sources or Web Archive if original sources are not available anymore.

Settings page with full control over plugin behavior
Archivarix External Images Importer scans your posts and pages for external URLs in src/srcset attributes of all img tags. Based on configured settings, the plugin can:
You can choose what to do with images that could not be downloaded:
Available in English, Russian (Русский), and Spanish (Español).
For more information, visit the plugin documentation.