Dim reader As New PdfReader(nombref) Dim fs As New FileStream(destino & “\” & nombred, ) Using fs. Dim stamper As. 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. Free source code and tutorials for Software developers and Architects.; Updated: 2 Apr

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How to reduce size of pdf using itextsharp – CodeProject

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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 handle, and that’s lossy compression of images which will often do the most dramatic reduction of file size if you are willing to sacrifice quality. Hi saliniRefer the below sample code.

One of the biggest files gets very close to the 10GB limit on file size. Adding metadata iText 5.

iText – Reduce PDF file size

If you feel any content is violating any terms please contact. Understand that English isn’t everyone’s first language so be lenient of bad spelling and grammar. There’s actually no requirement that what we think of as “compression” actually occurs but in reality I think it would always happen.


We have mentioned several ways depending what content your pdf has: NET library you can use in your programs to ocr and compress existing PDF files or create new ones from scanned images.

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PDF and compression (iText 5)

By doing this, iTextSharp thinks the stream has changed, and it will comprrss the compression level that was defined for writer object of the PdfStamper. Don’t tell someone to read the manual. C and itextsharp PDF compression. Existing Members Sign in to your account. This is a destructive change but it might be acceptable in your environment. It works really good for me.

The remaining things I don’t mine like fonts,headers etc. To get an idea whats possible try the following two options in adobe acrobat: The Document class has a static member variable, compress, that can be set to false if you want to avoid having iText compress the content streams of pages and form XOb-jects.

Format “Original file size: Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. The CompressionLevel is actually what you normally think of as compression, a number from 0 to 9 or -1 to mean default which currently equals six I think.

C# and itextsharp PDF compression

Carlos Arturo Bernal Carvajal. Leonard, didn’t know at first what you meant with “refrying” but found this article of yours which explains it quite well: In the resulting PDF file, content streams will be compressed, but so will some other objects, such as the cross-reference table. I haven’t used ITextSharp compression but I doubt that. I looked at many of the free ones, such as PDFSharp, which is very good in my opinion at making PDFs, but cannot render or compress them.


They contain lots of images and text xompress of which is exported as one single image on the page within the PDF.

HasFile Then If fuUpload. My task is converting tif to pdf.

Basically you use iText to find and extract all images, perform your own reduction logic and then add the images back using iText. After executing the code the pdf file generated with size of KB. I mean if you want to reduce the size of your pdf we could also tell you to cut of pages until your pdf has the right size. Dear Leonard Rosenthol, I didn’t try using Com;ress Acrobat but i want to do through programmatically not manually why because that is not a fixed size it may vary and the files should iitextsharp uploaded by users.