thanks for your answer.
thumbnail images are not clear enough to read in the document… or can be ?… because if they could be comparable, then the idea is not bad and the shorcode MLA already use it …
Here’s the shorcode I was talking about:
[mla_gallery post_mime_type=application/pdf post_parent=all link=file size=icon mla_caption=”{+title+}” orderby=date order=desc]
, but it still remains the initial problem that they will not be able to view in the same window created by PDF_Embedder