Not really a Linux issue, but a FOSS issue:
I'd like a pdf plugin for Firefox that automatically rasterizes a pdf that's being opened and inserts it inline, or opens it in a new window. This would be especially helpful if the pdf is only one page.
Rasterization at 72dpi would only be necessary as it is on screen. Therefore, rasterization should be pretty fast.
The reason I've thought of this: my city's library insists on providing links to things that look like posters or news articles, but it's a pdf. Therefore, I must open my laggy pdf software on my machine and go through that whole dialog.
Yes, I know, I could just get more RAM (but my motherboard doesn't play nice with RAM and I'm also frugal).