Web Site Optimization: How to Optimize PDF Files for Web Sites
Portable Document Format (PDF) is the defacto file format for presenting device-independent documents on and off the Web. While PDFs have become quite popular on the Web, many PDFs used in web sites are designed for high quality print output and are not optimized for the Web. Even PDFs designed for Web use can have a wait problem, weighed down with excess fonts, change histories, and unoptimized images and forms. Optimizing PDF files for the Web can significantly shrink their size and boost display speed, saving bandwidth and user frustration. (For the full “Optimize PDF Files for the Web” article)
Creating Small PDFs
The main factors in creating small PDFs are image resolution, image type (bitmap or vector), the number of fonts used and how they are embedded, PDF version, and the level of compression. In general the higher the PDF version number, the smaller the file. Acrobat 5 (PDF version 1.4) added JBIG2 compression, which is superior to the CCITT or Zip algorithms when compressing scanned monochromatic copy.
