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KPDL, Kyocera Page Description Language; LCDS/Metacode, a print stream format used in older high-speed printers ; MODCA, Mixed Object Document Content Architecture (IBM) MTPL, Mannesmann Tally Printer Language; PCL, Printer Command Language (Hewlett-Packard) PDF, Portable Document Format (Adobe Systems), now ISO 32000 [4] PostScript (Adobe Systems)
The file starts with a header containing a magic number (as a readable string) and the version of the format, for example %PDF-1.7. The format is a subset of a COS ("Carousel" Object Structure) format. [23] A COS tree file consists primarily of objects, of which there are nine types: [16] Boolean values, representing true or false; Real numbers ...
Original file (2,225 × 252 pixels, file size: 8 KB, MIME type: application/pdf) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
The current PDF specification, ISO 32000-1:2008, is available from ISO's website, and under special arrangement, without charge from Adobe. [28] Because the format is designed to reproduce fixed-layout pages, re-flowing text to fit mobile device and e-book reader screens has traditionally been problematic.
Open XML Paper Specification (also referred to as OpenXPS) is an open specification for a page description language and a fixed-document format. Microsoft developed it as the XML Paper Specification (XPS). In June 2009, Ecma International adopted it as international standard ECMA-388. [2]
tells the document manager the coordinates, measured in PostScript points, of the bounding box for all the pages taken together; 0 0 612 792 is the coordinates of a US Letter–sized page; tells the document manager what kind of paper sizes are used in the whole document; in this example only one size is used, namely the US Letter size
PDF is a standard for encoding documents in an "as printed" form that is portable between systems. However, the suitability of a PDF file for archival preservation depends on options chosen when the PDF is created: most notably, whether to embed the necessary fonts for rendering the document; whether to use encryption; and whether to preserve additional information from the original document ...
Sumatra PDF is a free and open-source document viewer that supports many document formats including: Portable Document Format (PDF), Microsoft Compiled HTML Help (CHM), DjVu, EPUB, FictionBook (FB2), MOBI, PRC, Open XML Paper Specification (OpenXPS, OXPS, XPS), and Comic Book Archive file (CB7, CBR, CBT, CBZ). [3]