On Tue, Jun 18, 2013 at 8:00 AM, Nicolas Silva <nical.si...@gmail.com> wrote:
> I feel somewhat uneasy about the idea that thumbnails generate more network
> traffic. It would be great to at least throttle that when connectivity is
> bad, or when the the user's data plan bill could suffer from it (not sure
> how to detect/address something like that). If nothing else, users should
> be able to disable this feature.

If we design it properly this shouldn't be a huge issue (and users
disabling the feature probably won't be necessary). This isn't
something we'd provide UI for, certainly.

> Also it's worth noting that thumbnails also have the problem of when it
> should be taken. As soon as web pages become applications rather than
> simple documents, we tend to screenshot before most of the content is on
> the screen. Maybe it's worth thinking about how potential solutions to both
> problems interact.

I think this is largely a separate problem - when to screenshot vs.
how to do it seem mostly unrelated. Do you have any examples of where
the current thumbnail code fails to capture a "good" thumbnail? I
think it it just uses a hard-coded delay after load, and as far as I
know this hasn't really been a problem in practice. B2G's requirements
are somewhat different given the way their screenshots are used (as a
perceived performance optimization rather than for thumbnails).

Gavin
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