Steven D'Aprano composed on 2014-10-18 11:08 (UTC+1100):

> ...list's rules...

Steven D'Aprano composed on 2014-10-18 09:55 (UTC+1100):

> Also, next time, if you must send such things, please use JPEGs rather 
> than PNGs as they will be much smaller in memory usage, with only a 
> slight degredation of quality, which for the purposes of showing what 
> your screen looks like is not important.

Regardless of rules, if you want to be as polite as possible, one does not
attach either .jpgs or .pngs (or any binaries for that matter) to mailing
list posts. Instead, upload them somewhere, then provide links to them to the
list. That way, the bandwidth they require is used only by those few who wish
to see them, regardless how big they are or how many people subscribe to the
list.

Speaking of size, one cannot necessarily be sure whether any particular
screenshot will be larger or smaller according to whether saved as .png or
.jpg. Multiple factors play into how well the creation compression works and
size on disk or moving through the www. I've seen a .png as much as 5X the
size of the very same shot saved as .jpg, while other times half the size.
One needs try both to be sure about minimizing size. Often, significantly
more can be saved via a png shrinker like optipng or pngcrush.
-- 
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)

 Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/