rotate thumbnails

  • Thread starter Thread starter S. Daly
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S. Daly

Does XP's built-in rotate jpg files have any lossy effect? I usually used
'jpegcrop' with my Win2000 computer and I notice on my laptop (XP) it
rotates them, problem is I don't know if I lose clarity like editing a jpg
does, any ideas?
Thanks,
R. Hamm
 
S. Daly said:
Does XP's built-in rotate jpg files have any lossy effect? I usually
used 'jpegcrop' with my Win2000 computer and I notice on my laptop
(XP) it rotates them, problem is I don't know if I lose clarity like
editing a jpg does, any ideas?
Thanks,
R. Hamm
Click to expand...

XP's rotation is not lossless or is lossy; take your pick.

Q
 
S. Daly said:
Does XP's built-in rotate jpg files have any lossy effect? I usually used
'jpegcrop' with my Win2000 computer and I notice on my laptop (XP) it
rotates them, problem is I don't know if I lose clarity like editing a jpg
does,
Click to expand...

JPG is built around cells that are 8 by 8 pixels. Provided a picture is
a multiple of that both ways (usual) the system's rotation is lossless
(or rather adds no losses to those already present from the jpg
compression). If they are not a multiple, it will warn you
 
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