Portable Document Format (PDF) is a file format used to present documents in a manner independent of application software, hardware, and operating systems. The Specification refers to the specification that it needs to meet.
This used to be a really easy question to answer – Adobe. The PDF file format was invented by the co-founder of Adobe (John Warnock) 20 years ago and Adobe would usually release new versions every couple of years. The first version was 1.0 and they then increased by a point (1.1, 1.2, etc). Looking…
In theory this is a really easy question to answer. There is a reference table to all the PDF objects in the file giving you the binary offset to the start byte of the PDF object. So if I have a PDF reference table which looks like this…. xref 6153 30 0000000016 00000 n 0000004052…
One very powerful feature of the PDF file specification is the ability is the option to create custom font encodings. This means that for each font you can choose exactly what glyph value the text index values used in the Tj command map onto. This has a number of advantages, including:- 1. Making it very…
