Saving your file using Adobe's PDF format is a surefire way to share your files exactly the way you wanted them to appear. However, it costs Adobe PDF software can cost so much, and copying it without a license could get you in trouble with the law.
Good thing there's PDF Online, a website which allows you to upload any document or pictures, and converts them into PDF, for free! The PDF website's service is real easy to use. It doesn't require any registration, you don't need to sign up, and you don't need to think up any new usernames or passwords. All you need to do is upload your file, provide a file name for the soon-to-be-converted to pdf file, and enter the e-mail address where you want the converted file sent. The recipient will receive the pdf file within minutes as an attachment. I've used their service a number of times and so far and it worked perfectly for me. My files turned up to be exactly the way I wanted them, and all in pdf format.
PDF Online supports a number of file extensions for conversion: DOC, RTF, PPT, PUB, XLS, TXT, JPG, GIF, TIFF, BMP, PNG, EMF and WMF. The maximum size for uploaded files is 2MB.