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
I do a lot of work with fonts, and when I tell people this they often seem surprised – surely there can’t be that... Due to a recent problem with a font on OSX, I found myself investigating OSX’s font validator. It actually ships with one which is... We recently received a request from a client to convert some PDF files to HTML with BuildVu and test whether they worked correctly in Internet... Using the HTML5 File API to validate PDF Files Recently in my own time I have been familiarizing myself with the HTML5 File API.... Mark has previously written about how to edit PDF files by adding a second reference table, and Daniel made a whole series on making... In theory this is a really easy question to answer for non-Compressed PDF files. There is a reference table to all the PDF objects... 
