Extract embedded images and replace embedded images with linked images: PicExtract

Extract embedded images and replace embedded images with linked images.

Extract embedded images to a chosen folder. Exported files can be named like the image/object names (if available).
(If you have multiple named image objects sharing the same image you might leave this option unticked and OpenOffice's internal names will be used. So only 1 image for all these image objects will be extracted. Otherwise you get individual files for every image object name)

You can set to replace the embedded images with the extracted ones as linked images.

To re-embed the extracted images into the document you can use OpenOffice''s builtin "edit"->"links"->"break links".

If you have 1 image selected in Writer then only this image will be affected.

Relink linked images to another place.
All linked images can automatically copied to the new place. Existing files will not be overwritten.

Extra-Button to create a list of linked images (.txt) in the same folder as the .odt.

The same extension for LibreOffice:
https://extensions.libreoffice.org/extensions/extract-embedded-images-and-replace-embedded-images-with-linked-images-picextract