Hi - I hope that you are Doing good !!
Yes - This is superbly possible in Lucid
I personally use Lucid as a repository for PDF files and images that can be easily extracted or showcased later

Lucidchart allows you to attach files directly to shapes or anywhere on the canvas - upload them as PDFs attachments
You can use shapes or text labels to categorize or describe each PDF, making it easier to navigate and locate specific documents later

When you need to showcase or share the collection of PDFs and images, you can export the Lucidchart diagram as an image file. This image can serve as a visual catalog or index of the documents contained within the diagram

Hope this helps

Thank you very much and have a fantastic day!
Warm regards

Thanks! Is there a way to extract the original file with original file name? when extracting multiple pdfs individually renaming takes a while. 

@kellishunkwiler To clarify, are you saying that you want to utilize a Lucidchart or Lucidspark document as a storage tool for multiple PDFs (visualized by corresponding thumbnail images) and then extract the PDFs themselves? Or simply extract the images of those PDFs?

LucidChart is what we are using. We created swimlanes and then embedded pdfs so we could show the images, but we cannot get the file back from the image. The only way to export, is to select the image of the embedded pdf and export as a new pdf, rather than just downloading the original. 

@kellishunkwiler Thanks for this explanation - unfortunately using Lucidchart in this way and downloading the original file that maintains the original name isn’t currently supported. We’re very interested in your feedback, however,  and committed to continually improving our products. If you’re willing to share, we’d love to hear more details about your use case or what you’d like to see in this experience within this thread. I’ve also converted this post to an idea so that it’s visible to others within the Product Feedback section of the community - from here, they can upvote it and add details of their own.

Finally, for more information on how Lucid manages feedback via this community, take a look at this post: