Well, my point of view might be wrong, but i find it helpful when i know there are known issue being investigated, so we don't create duplicate topics.
Let's look at steam game forum. There always a known issue topic pinned. Including all the issue to date and those that have been fixed. It really help us.
Native code is usually faster than JavaScript, and I don’t think this is an exception. I haven’t used pdf.js much, though.
Regarding compatibility (or rendering quality), I think PDFium is the winner. It has a good renderer (from Foxit¹). When I open this PDF² with pdf.js (Firefox 32), an image on page 6 is missing. PDFium (Opera 25/Chrome 38) renders the PDF correctly.
@piter432
Being cynical here again but....Google is pushing their Keep software hard and would not implement Opera notes because of that, I guess. The great feature about Opera notes was that you could click on the note and go to the web site from which you copied the note...awesome. Sigh...
Guys from ChrOpera said on MyOpera Dekstop Team Blog that they won't bring it back, so it's not Google decision, but it's decision made by stupid ChrOpera's vision of their browser.
Everything but the microphone used for speech input works for me which means it's pointless to use Opera when you will be in the middle of a lesson and then bam error can't go on.
I agree with the criticality of the function, the new Opera without basic functionalities is far inferior in usability in comparison to other browsers.
I still use Opera only because I use Opera 12 alongside the new Opera, otherwise I had left like many other old Opera users.