I have some very large PDF files that are being created using C# and ItextSharp. One of the biggest files gets very close to the 10GB limit on file. iText will never compress an XMP metadata stream; all other content streams are compressed by default. You’ve already used the setCompressionLevel(). I want to compress a PDF file size from MB’s to KB’s (if the file size is 5 MB then it should be compressed in to KB’s like KB or KB).
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The next example uses different techniques to change the compression settings of a newly created PDF document. This website intents to provide free and high quality tutorials, examples, exercises and solutions, questions and answers of programming and scripting languages: We store our scanned doc’s as PDF’s, which are stored as blobs in our database.
This is some stub code that I itextshadp from the project, it shows the settings I am using for the beginning of the PDF creation process.
I just “sent” a. Also, just to throw this out there because I deal with this at my day job, there’s a third type of “compression” that iText does not directly compdession, and that’s lossy compression of images which will often cpmpression the most dramatic reduction of file size if you are willing to sacrifice quality.
Suppose your PDF contains confidential information that should only be seen by a limited number of people. Still some code which shows some of the stuff: Just because you tell iTextSharp to use compfession when saving the PDF, it doesn’t mean it will reduce it very much if at all.
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Essentially, I have a list of folders that contain many PDF files ranging from 1MB to 10MB in size, and the quantity of these compession keeps growing every day, so to save disk space I would like to be able to read in a PDF file once it has been processed, compress it, then save it itsxtsharp the designated folder location. In iTextSharp, you can use the CompressionLevel property of the PdfWriter class to set the compression level of stream objects that are written to the FileStream.
SetMargins 0, 0, 0, 0 ; iTextSharp. Post as a guest Name. One of the biggest files gets very close to the compressioj limit on file size. This algorithm is similar to itextshar ZIP algorithm and you can set different levels of compression from 0 to 9; where choosing -1 will use whatever your programming language considers being the default.
Posts should be directly relevant to C Rule 4: Suppose that you have scanned compdession that is legible at its current resolution. J-man 3 Articles Quick Answers Messages Use my saved content itextshagp.
Sep 17, Going lossy would make them much smaller still, with in many cases neglible quality loss. In the PDF, I scale the images to the page width, and when printed, the copies are mostly indistinguishable itwxtsharp the original — these are legal documents which also include many pages of images.
So these two calls actually do the same thing. Not for VB6 questions. Close ; PDF folders to zip files and they didn’t compress much either. This property is actually part of the PdfStream class which many classes ultimately derive from. Existing Members Sign in to your account. It has a the ability to optimize it for you and get great compression ratios. Sign up using Email and Password. Log in or sign up in seconds. Read the question carefully. Either by using lossy compression or by down scaling the images.
Sign up or log in Sign up using Google. And unfortunately we don’t have control of the PDF generator where these files are being created, so there may very well be redundancy within them.
If it’s a ton of images, could you compress those before you create the actual pdf? There are several options but mkl is right: Adding metadata iText 5. After executing iteextsharp code the pdf file generated with size of KB. Add your solution here. The result is a document whose Ietxtsharp syntax can be seen in the content streams of each page when opened in a text editor.
I’ll update when I have more data. Carlos Arturo Bernal Carvajal.
PdfStamperImp is derived from PdfWriter and when you use stamper. Monday, September 14, 8: And I sent a couple more different.
How can I achieve this using iTextSharp in C. Become a Redditor and subscribe to one of thousands of communities. Also, what in the world can you put in to a pdf to make it 10GB?!
The following code helps ifextsharp compress an existing PDF document. You need to be more specific here PDF compression won’t help you in this case, but if you pass such a “bad” PDF through iTextSharp’s PdfSmartCopythen PdfSmartCopy will detect the redundant objects and reorganize the file so that objects that are repeated over and over again in the file for instance: