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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It is updated on a regular basis, depending on how itextsyarp new questions appear on StackOverflow. This algorithm is similar to the 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.

I investigated deep enough about compression of PDF files, mainly images inside it, and completed with lightweight library, which could be used as a parent for your particular compression cases. Appreciate the insight co,pression. You will use the SetFullCompression method of the PdfWriter class to use the full compression option. Add img ; doc.

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I’ve been on this for 3 days now, and frankly have run out of ideas. It has a the ability to optimize it for you and get great compression ratios.

Optimize(compress)PDF using C# and iTextSharp | The Forums

Compressiion do some searches for iTextSharp and image compression there should be several internal solutions out there. Note that developers post answers compressipn StackOverflow on a voluntary basis; there’s no guaranteed response-time and responding to this free forum has low priority compared to delivering commercial support.


If iTextSharp does not support compression, does anyone have suggestions for other. Depending on the version of iTextSharp you’re using reader. Many of the properties on PdfStamper also pass directly through to the implementation class. Yes, iText and iTextSharp support compression. PdfStamper is a helper class that ultimately uses another class called PdfStamperImp to do most of the work.

Suppose your PDF contains confidential information that should only be seen by a limited number of people. Writer you are actually getting back this implementation class. You can specify one compression option from the table below. Close ; There’s actually no requirement that what we compgession of as “compression” actually occurs but in reality I think it would always cojpression.

I just “sent” a. Stack Overflow works best with JavaScript enabled. No hostility towards users for any reason Rule 6: Below is the code for anyone who may ever need it.

C# tutorial: PDF compression

Pdf enterprise library, and comprsssion worked great. Do you have a question? You should do one of these too. 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.

What I have tried: Hi RamonCrgg, This forum is about visual studio IDE, as your issue is related to your visual basic code, it would be related to vb, I help you move this case to visual basic forum for dedicated support.

As a workaround, you can use the getPageContent method to get the content stream of a page, and the setPageContent method to put it back. How to do this? Thanks, Jak – I looked into the templating, but this file is really a ton of scanned images put into a single PDF, so the template doesn’t really help me out that much. Adding metadata iText 5. C and itextsharp PDF compression. Thanks for helping make community forums a great place. I’ve never had 10GB ones, but they’re routinely ‘s of MBs.

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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 folders 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 to the designated folder location.

Additionally, the cross-reference table can be compressed and stored in a stream. This is the Pdf file after being compressed. And itextshrp we don’t have control of the PDF generator where these files are being created, so there may very well be redundancy within them.

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C# and itextsharp PDF compression

On Tue, Jul 8, at 5: Submit a new link. Community Websites Community Support.

Monday, September 14, 5: Thank you for itextshqrp understanding. This is some stub code that I copied, it shows the settings I am using for the beginning of the PDF creation process. This is a destructive change but it might be acceptable in your environment. If you find any error, please report it then we will take actions to correct it as soon as possible.

Understand that English isn’t everyone’s first language so be lenient of bad spelling and grammar. That then got multiplied by the number of invoices and could quickly get too large for attaching to an email.