Works well.

It works well for easily displaying PDFs. I’m using the Secure version (annual renewal) which is a useful feature to have as an extra layer of security when you don’t want to make your PDF downloadable. That said, any of the content I don’t want downloaded is also behind a login prompt.

I’m giving 4 stars because even though I’ve not had any issues getting in touch with support, I have had issues with the plugin causing problems with my sites. Problems were corrected, but had to roll-back and fix took awhile.