Every time I wish to view a PDF Opera offers me to download it.
However, I prefer not to download it, instead I'd rather just want to view it and see whether the contents meets what I have been searching for.

I don't want to download Acrobat for Android: when I use that, I get's me a Welcome at Acrobat Reader - Open and share documents, bla bla screen and I should login with Google or Facebook.

I don't want to log in, I don't want to share, just view the pdf, same way as Opera for Windows.

Any suggestions?
Is there a -native- solution?
(i.e. Opera built in)

Thanks!