Rated 3 out of 5 stars

Nice for small PDFs.
Pros:
- no "monster"(acrobat) plugin needed
- works well for common PDFs, offers optional download
Cons:
- needs javascript enabled for the site hosting the PDF
- pages load very slow, when using larger PDFs (>20 pages)
- some graphics are not rendered correctly (vector graphics?)

This review is for a previous version of the add-on (0.3.175).