Comment 172 for bug 25830

(In reply to comment #134)
> that UI seems a bit complex...

For firefox user yes ;-)
Issue with options 4 and 5 is that they propose conversion prior
to problems.

My new proposal is to move dialog with this options in "View/Show As"
menu, while adding only "new as text/plain" option in open dialog,
thus solving problems like this:
  - try to view any image from <http://www.elf.org/pnglets/>
  - <http://flower.upol.cz/~olecom/bugs/m-57342/eindex>