QPDF 8.4.0 freeware
QPDF is a command-line program that does structural, content-preserving transformations on PDF files. It could have been called something like pdf-to-pdf. It also provides many useful capabilities to developers of PDF-producing software or for people who just want to look at the innards of a PDF file to learn more about how they work.
|OS||Windows XP, Windows Vista, Windows 7|
|Installation||Instal And Uninstall|
|Keywords||manipulate PDF, PDF manipulation, PDF file structure, manipulate, custom, customize|
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|8.4.0||Feb 19, 2019||New Release||Command-line Enhancements:
Non-compatible CLI change: The qpdf command-line tool interprets passwords given at the command-line
Differently from previous releases when the passwords contain non-ASCII characters. In some cases, the
Behavior differs from previous releases. For a discussion of the current behavior, please see Section 3.10,
“Unicode Passwords”, page 20. The incompatibilities are as follows:
On Windows, qpdf now receives all command-line options as Unicode strings if it can figure out the
Appropriate compile/link options. This is enabled at least for MSVC and mingw builds. That means that
If non-ASCII strings are passed to the qpdf CLI in Windows, qpdf will now correctly receive them. In the
Past, they would have either been encoded as Windows code page 1252 (also known as “Windows ANSI”
Or as something unintelligible. In almost all cases, qpdf is able to properly interpret Unicode arguments
Now, whereas in the past, it would almost never interpret them properly. The result
|8.3.0||Aug 22, 2018||New Release||Command-line Enhancements:
Shell completion: you can now use eval $(qpdf --completion-bash) and eval $(qpdf --completion-zsh) to enable shell completion for bash and zsh.
Page numbers (also known as page labels) are now preserved when merging and splitting files with the -pages and --split-pages options.
Bookmarks are partially preserved when splitting pages with the --split-pages option. Specifically, the outlines dictionary and some supporting metadata are copied into the split files. The result is that all bookmarks from the original file appear, those that point to pages that are preserved work, and those that point to pages that are not preserved don't do anything. This is an interim step toward proper support for bookmarks in splitting and merging operations.
|8.1.0||Aug 22, 2018||New Release||Usability Improvements:
When splitting files, qpdf detects fonts and images that the document metadata claims are referenced from a page but are not actually referenced and omits them from the output file. This change can cause a significant reduction in the size of split PDF files for files created by some software packages. Prior versions of qpdf would believe the document metadata and sometimes include all the images from all the other pages even though the pages were no longer present. In the unlikely event that the old behavior should be desired, it can be enabled by specifying --preserve-unreferenced-resources. For additional details, please see Section 3.6, “Advanced Transformation Options”.
When merging multiple PDF files, qpdf no longer leaves all the files open. This makes it possible to merge numbers of files that may exceed the operating system's limit for the maximum number of open files.