PDF manipulation library
CAM::PDF reads and writes any document that conforms to the PDF specification generously provided by Adobe at https://www.adobe.com/devnet/pdf/pdf_reference.html (link last checked Feb 2013).
The file format through PDF 1.5 is well-supported, with the exception of the "linearized" or "optimized" output format, which this module can read but not write. Many specific aspects of the document model are not manipulable with this package (like fonts), but if the input document is correctly written, then this module will preserve the model integrity.
The PDF writing feature saves as PDF 1.4-compatible. That means that compressed object streams cannot be written. The consequence is that reading and then writing a PDF 1.5+ document may enlarge the resulting file by a fair margin.
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