The Content-Addressed Attachments plugin stores files by their content instead of their original names, so duplicate attachments collapse into a single stored copy and links stay tied to a stable content ID. It can turn pasted or dragged files into IPFS style links, resolve those links through local storage first and fall back to configurable external gateways when needed. Another useful part is web image locking. The plugin can download remote images, verify them with a CID checksum, cache them locally and replace the original links with an internal reference format. It also includes bulk migration commands for existing local attachments and external images, which makes it practical for cleaning up a vault that already has a lot of scattered files.