[pjmlp]

I don't find it convenient at all, given that my native PDF viewer clearly outperforms the in-browser viewers, specially in large PDF files.

Change it to "open in external application" is one of my first changes after a fresh install.

[emn13]

But for small pdfs, the in-browser pdf viewer is typically faster. I use lots of PDFs and while I read most in adobe reader, I still appreciate the in-browser rendering: it's often good enough, and stuff like smooth scrolling and tabbed browsing actually works better, and the UI is less in-your-face. The windows PDF reader has (IMNSHO) ugly fonts, and no upside I can find whatsoever.