Our Paste with credit LibreOffice extension has been updated to support LibreOffice Impress. The extension works a bit differently in Impress though, because there are no frames to put an image with caption into. Instead, it stores metadata in image attributes when an image with metadata is pasted. The credits can later be displayed as text on a separate slide, so the credit doesn’t distract the viewer from the presentation.
The following screencast shows the Impress support in action:
Although, this is still experimental work, we encourage you to download the extension, play with it and share your feedback.
We’re already thinking about improving this tool in a couple of ways, including a parser for embedded metadata and additional polishing on the UX side.