Best way to compress files

PDFs already have compressed images, so the additional compression is not that much, and you will not really be able to compress it further. If you have .Mac, you can use something FileChute, or if you have access to an ftp server, use that. Or perhaps you can both get gmail accounts (which allow attachments up to 20 MB).

One other option is to break up the keynote presentation into separate files with subsets of the slides.

A final option is to use something like split&concat to break the pdf into smaller pieces that can be emailed separately. The recipient can use the same software to reassemble (if using a Mac), or there is free PC software to reassemble the file.

Hope this helps...

Right click on the file, and choose "compress" from the pop-up menu. That should compress it by at least 20-30%.

The image quality using "Compress" under "File" is horrible. There are two compression apps I found on Version Tracker. I went with PDF Shrink, since it allows you to use the app for ten days free. It took a 21 meg PDF and compressed it to 3.1 megs, without any loss of image quality. The other is PDF Compress.

Before you try out PDF Shrink of PDF Compress, check out the image quality on the PDF I compressed of a research paper I wrote, that's published online. The images are on pages 18 - 34. Compare them to what you get using just "compress" under "file". There's a huge difference.

http://www.knowth.com/tara-orthostat.htm

Chris,

Correction about "Compress" under "File". That method only created a .zip file of my PDF, but the file size remained the same. It was under Preview that the file was compressed to the point that the images were blurry. Open Preview, then File/Save As, then under Quartz Filter select Reduce File Size. Sorry for the confusion between the two methods.

You can use YouSendIt to email large & small files.

Unfortunately PDFs out of Keynote use large jpgs for backgrounds etc. and there isn't really a way to reduce the files size dramatically, short of loosing the quality.
Have you tried export to a Powerpoint? (I haven't, but maybe...)