HiI realise this may not be the most appropriate place to ask this, so apologies - but at least I might get a point in the right direction?I've been using the itextsharp library in a project to split a pdf into separate sheets, rename the parts, and then re-assemble them. Some of the pdfs I've been running have been 3000-5000 pages long with graphics and text.The split/join process works well enough, but the resulting re-joined pdf is inflated. With the original of 57mb, the output is 880mb.

Source codes of the demo applications are available in C# and VB.NET. Usage of MRC algorithm for optimizing and compressing PDF documents. Easily create PDF's automatically. FWIW Philippe cmay wrote: I don't think that is quite what I am looking for. The site is mostly in german so I couldn't tell for sure, but it looked like a stand alone application. Acrobat Reader will shrink the file, but I need to do this programmatically.

That's with a file of 3300 or so pages.Acrobat DC can sort this out just by opening the pdf and saving as a new file - it reports that it 'consolidates duplicate page backgrounds' and 'consolidates duplicate fonts' as it saves and by doing that I get the file size down to pretty much the original 57mb.Does anyone have a good means of doing this sort of compression from vb? - the ways I've tried so far don't make much of a saving on the file size.I have no budget for this, so I'd need to be able to do this without buying the Acrobat SDK!Thanks!UPDATE- just check the fonts in the joined doc and there are 6412 of them! - I reckon all but 6 or 7 are superfluous!

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Presumably you are creating all these duplicate fonts and page backgrounds. If we could see what you're doing then we might be able to see what's wrong with it.Hi - thanks for replying.I'm using Stanav's postSpecifically, it's the SplitPdfByPages and MergePdfFiles functions. I've not modified them much, just added a progress bar.Maybe I should have just replied to that thread, but with it being an old one I thought that might not be such a good idea.I've been doing some googling and it looks like it's more surplus fonts that are causing the problem rather than the backgrounds. Each split part of the pdf has a copy of the font, so maybe the solution lies in the merge function. Code: Public Shared Sub SplitPdfByPages(ByVal sourcePdf As String, ByVal numOfPages As Integer, ByVal baseNameOutPdf As String)Dim raf As iTextSharp.text.pdf.RandomAccessFileOrArray = NothingDim reader As iTextSharp.text.pdf.PdfReader = NothingDim doc As iTextSharp.text.Document = NothingDim pdfCpy As iTextSharp.text.pdf.PdfCopy = NothingDim page As iTextSharp.text.pdf.PdfImportedPage = NothingDim pageCount As Integer = 0Tryraf = New iTextSharp.text.pdf.RandomAccessFileOrArray(sourcePdf)reader = New iTextSharp.text.pdf.PdfReader(raf, Nothing)pageCount = reader.NumberOfPagesIf pageCount. →.new.Get practical advice and learn best practices for moving your applications from RDBMS to the Couchbase Engagement Database.

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