- Portable Document Format (file). A document format developed by Adobe, for
storing and formatting published documents. PDF files are recognised by the
file extension .pdf.
For more information see:
- www.adobe.com/products/acrobat/readstep.html - download site for the free Adobe Acrobat reader.
- www.primopdf.com - Download site for a number of PDF tools, including the free "PrimoPDF" which behaves as a printer but generates PDF files as output - so you can print to it to generate PDF files.