compressing images

[Fran]

Hi

I have a powerpoint presentation (office 2003), which was 19mb. I did the
usual to compress all images in the document and got it down to 15.6mb. I
need it to be about 3mb.

Despite having compressed the images they are still rather large (around
170kb). I copied one out of ppt and put it in MS Office picture manger. Don't
get me wrong, I HATE this program, but I am at work and have no other option.
I compressed the image, which said it was a PNG, and got it down to 23kb.
Picture saved as a jpg, which I then copied back into the ppt. Saved the ppt
but no change to file size. Copied image back into picture manager, and it
says it's back to 170kb.

What am I doing wrong here? I just can't get the image to stay compressed
and it's driving me crazy!

I'd be very grateful for and quick responses.

 

[Matti Vuori]

Despite having compressed the images they are still rather large
(around 170kb). I copied one out of ppt and put it in MS Office
picture manger. Don't get me wrong, I HATE this program, but I am at
work and have no other option. I compressed the image, which said it
was a PNG, and got it down to 23kb. Picture saved as a jpg, which I
then copied back into the ppt. Saved the ppt but no change to file
size. Copied image back into picture manager, and it says it's back to
170kb.

What am I doing wrong here? I just can't get the image to stay
compressed and it's driving me crazy!

When you copy images to and from clipboard, they loose the JPEG
compression. If you want to transfer images in JPEG, you need to
export/import disk files. Perhaps you could compress the original files and
re-import them to PPT. At least, if you didn't, use the email compression
setting. Its 96 ppi is plenty for presentations. Unfortunately, with PPT
one cannot change JPEG compression level (which influences image quality)
when compressing images. By upping the compression just about as small
sizes as one wants would be possible.

 

[Lucy Thomson]

Hi

You could try cut -> paste special -> paste as jpg/png on the pictures in a
copy of the file. I find this is a quick 'n' dirty way to get file size
down. It does mean you will lose any animations though.

Lucy