Invented by Adobe Systems over 20 years ago, the Portable Document Format (PDF) is now an open standard for electronic document exchange maintained by the International Organization for Standardization (ISO). When you convert documents, forms, graphics, and web pages to PDF, they look just like they would if printed.
PDF
How are images stored in a PDF file? When I was learning the PDF file format, I found Images could be quite a complex... One of the many reasons people do not put their content online is worries about security – they worry that the material can be... I came across an interesting issue with PDF Text fields while debugging a file this week. We were sent a 2 page document created... What are Standard fonts? One of the reasons that the PDF file format is so popular is that it embeds a large amount of... Understanding PDF Text Objects Inside a PDF is a Postscript stream of commands which describe the page – they draw the text, images or... 
