Previews for the documents about richdocuments HOT 2 OPEN

We have a lool/convert-to API[1] which can give you converted documents in any other format. So if you do a format=png there, we get the png of the first page of the document. I think that can be used here as previews ?

Please note that there was a regression in that API, so it wasn't converting the documents properly, but it has been fixed recently, so it works in current master, collabora-online-1-0 branches now.

[1] https://gerrit.libreoffice.org/gitweb?p=online.git;a=blob;f=loolwsd/reference.txt;h=bc0cbe8559a01789747adfdc2fdbcb47af3fb3b4;hb=HEAD

from richdocuments.

Yeah, that would be quite awesome! PNG of the first page is exactly what we need.

from richdocuments.