C
Colin Higbie
If I repeatedly use the Format picture option to Compress Pictures, Select
either Web/Screen or Print, and check the "Compress Pictures" box, will the
quality of the pictures keep being degraded each time, or once they are
compressed, does it know that and not try to recompress them?
I know this would not be an issue if they were being compressed in a
lossless format, but I've inserted them as high resolution JPEG's (too high
to leave them that way). That's a lossy compression method, so if PowerPoint
turns it into a bitmap, with the JPEG smudges, then recompresses it, those
distortions/smudges will be amplified each time.
How does PowerPoint handle its internal compression? What method dooes it
use? Will it degrade my images if I recompress all every time I add a few
new pictures?
Is it a mistake to put my pictures in as hi-res JPEG's? Do I need to
compress them down to the desired size first? I guess if PowerPoint is using
something like ZIP to compress, it won't get as good a compression result as
if I did them all manually ahead of time. I'm really just hoping to save
myself all that work.
Thanks for any insight,
Colin
either Web/Screen or Print, and check the "Compress Pictures" box, will the
quality of the pictures keep being degraded each time, or once they are
compressed, does it know that and not try to recompress them?
I know this would not be an issue if they were being compressed in a
lossless format, but I've inserted them as high resolution JPEG's (too high
to leave them that way). That's a lossy compression method, so if PowerPoint
turns it into a bitmap, with the JPEG smudges, then recompresses it, those
distortions/smudges will be amplified each time.
How does PowerPoint handle its internal compression? What method dooes it
use? Will it degrade my images if I recompress all every time I add a few
new pictures?
Is it a mistake to put my pictures in as hi-res JPEG's? Do I need to
compress them down to the desired size first? I guess if PowerPoint is using
something like ZIP to compress, it won't get as good a compression result as
if I did them all manually ahead of time. I'm really just hoping to save
myself all that work.
Thanks for any insight,
Colin