After a brief absence, we are a back with a bang! Today’s PDF is a very nasty PDF allegedly created with these tools Creator Form Z_ZSD000073 language ZF Producer SAP R/3 Release 46C This file is nasty for 2 reasons. Firstly, it uses non-embedded CID fonts, so it is not really cross-platform. It relies on…
While debugging our PDF to HTML5 we have come across alsorts of interesting ‘PDF’ features which need conversion to an HTML5 equivalent. Today, I have been looking at a PDF page which had extra text on the HTML5 version. It turns out that the text is also on the PDF but it is just invisible…
Quite often people want to obscure or remove critical data in a PDF file. For example they want to send us a PDF file to examine but remove personal or classified data. One common way to do this is to have a black box drawn over the text which hides the text or image. This…
A while back we put a lot of effort into implementing some of the hinting technology in the TrueType specification. This system effectively uses small programs in a stack based environment to manipulate the set of points which define the contours of a glyph. Up until recently, some of the instructions available in the language…
The quality of documentation and tools in an area of software development has an incredible impact on us developers. They both influence how fast we can work, the quality of the software we write, and even how we feel about our work. I’ve recently been working on adding some support for hinting into our TrueType…
