On 8 October 2009 c. 02:48:32 Paul M wrote:
> As far as I'm aware, you wont get lossless jpeg rotation.
>
> There does appear to be an orientation tag of some sort in the jpeg
> header, so rewriting that could cause a jpeg to be displayed with a
> different orientation. I'm not aware of any software that will do
> this however.
>
> All editors that I've seen will re-encode a jpeg whenever any change
> is made. Whenever that happens, you'll lose information.
> (Actually, lossless jpeg encoding is possible but I've never seen a
> publicly available app or library that impliments it.)
>
>
> paulm
AFAIK, Gwenview/digiKam/other ones using kipi plugins can. But better
check it by yourself.
--
Best wishes,
Vadim Zhukov
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
