wok-6.x diff qpdf/description.txt @ rev 24415
Add some current_version
author | Pascal Bellard <pascal.bellard@slitaz.org> |
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date | Thu Feb 10 18:04:02 2022 +0000 (2022-02-10) |
parents | |
children | 3c9783d89208 |
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1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/qpdf/description.txt Thu Feb 10 18:04:02 2022 +0000 1.3 @@ -0,0 +1,25 @@ 1.4 +QPDF is a command-line program that does structural, content-preserving transformations on PDF files. 1.5 +It could have been called something like pdf-to-pdf. 1.6 +It also provides many useful capabilities to developers of PDF-producing software or for people 1.7 +who just want to look at the innards of a PDF file to learn more about how they work. 1.8 + 1.9 +QPDF is capable of creating linearized (also known as web-optimized) files and encrypted files. 1.10 +It is also capable of converting PDF files with object streams (also known as compressed objects) 1.11 +to files with no compressed objects or to generate object streams from files that don't have them 1.12 +(or even those that already do). 1.13 +QPDF also supports a special mode designed to allow you to edit the content of PDF files in a text editor. 1.14 + 1.15 +QPDF includes support for merging and splitting PDFs through the ability to copy objects from one PDF file 1.16 +into another and to manipulate the list of pages in a PDF file. 1.17 +The QPDF library also makes it possible for you to create PDF files from scratch. In this mode, 1.18 +you are responsible for supplying all the contents of the file, while the QPDF library takes care off all 1.19 +the syntactical representation of the objects, creation of cross references tables and, if you use them, 1.20 +object streams, encryption, linearization, and other syntactic details. 1.21 + 1.22 +QPDF is not a PDF content creation library, a PDF viewer, or a program capable of converting PDF into 1.23 +other formats. In particular, QPDF knows nothing about the semantics of PDF content streams. 1.24 +If you are looking for something that can do that, you should look elsewhere. 1.25 +However, once you have a valid PDF file, QPDF can be used to transform that file in ways perhaps your 1.26 +original PDF creation can't handle. 1.27 +For example, programs generate simple PDF files but can't password-protect them, web-optimize them, 1.28 +or perform other transformations of that type. 1.29 \ No newline at end of file