I am creating an email signature app and currently users can select a logo from a gallery which I then turn to Base64 to include in html for emailing. That part is working. What I would like to do... is allow users to select up to 10 logos, which would populate in a container. I tried using the PDF viewer but the background is always white. The logos all have a transparent background so I need the container to have that. Is it possible to do that with pdfviewer and if so, how would I get the base64 of the final composite?
The reason I am trying to do it with a container is I would like the images to scale down and be dynamic depending on how many they choose. Ideally the user could also move the images around or at least with a slider.
Looking for a free solution.

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