Online PDF reader?

Question

Programming

Greetings.
Prompt free online PDF readers for easy reading of a magazine or book spreads . It is desirable opensource, but it is also possible in the form of a service. Repeatedly seen similar on the sites of magazines and newspapers. From what I have already found:
FlexPaper - an open source engine, free for non-commercial use (but branded), seemed a little heavy.
ISSUU is a good service, but in the free version, right in the reader, it offers ads for third-party magazines and all that. Although the PDF reader itself is very nice.
Who else knows something like this? Thanks in advance.

Answer 1

swfviewer.blogspot.ch/ ?

Answer 2

Have you tried Google Docs viewer?

Answer 3

I used to use Issue, then switched to Scribd
At that time, the latter gave out fewer ads, I don’t know how it is now.