There are errors once in a while because you are using the wrong method to concatenate documents. Please read chapter 6 of my book and you’ll notice that . iText is a library that allows you to generate PDF files on the fly. Please find more details on iText on below link. Here is a code. This HowTo is based on the iText package. You need a recent version (ex. 2.*). This a command line utility. You specify the pdf files to be merge into one.

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If you need an example, see for instance the FillFlattenMerge2 example:.

Java: Merging multiple PDFs into a single PDF using iText. – BurnIgnorance

I blame the unofficial documentation for the popularity of this wrong approach. In case anyone is looking for it, using Bruno Lowagie’s correct answer above, here is the version of the function that does not seem to have the page flipping issue i described above:.

This has been explained on StackOverflow many times! I would like to add a link to an existing pdf that jumps to a coordinate on another page.

Merge Multiple PDF Documents using iText and Java

Are you a founder of the itext library? I recognize your name from the itext namespaces.

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You completely ignore the page size of the pages in the original document you assume they are all of size A4You ignore page boundaries such as the crop box conczt presentYou ignore the rotation value stored in the page dictionary, You throw away all interactivity that is present in the original document, and so on. This usually works great!

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. I’m using the following code to merge PDFs together using iText: Please read chapter 6 of my book and you’ll notice that using PdfWriter to concatenate or merge PDF documents is wrong: I strongly advise against using PdfWriter to merge documents! Using PdfWriter to merge documents is a bad idea. As documented, you are throwing away all annotations by adding PdfImportedPage instances to a document using addTemplate.

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Or you can add them while merging, as is done in the MergeWithToc example.

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How to merge documents correctly?

But once and a while, it’s rotating some of the pages by 90 degrees? Please read chapter 6 of my book and you’ll notice that using PdfWriter to concatenate or merge PDF documents is wrong:. Stack Overflow works best with JavaScript enabled. Sign up using Email and Voncat.

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How to merge documents correctly? | iText Developers

How to merge documents correctly? Manipulating existing PDFs iText 5. Nicholas DiPiazza 3, 5 35 Anyone ever have this happen?

Email Required, but never shown. In case anyone is looking for it, using Bruno Lowagie’s correct answer above, here is the version of the function that does not seem to have the itezt flipping issue i described above: Sign up or log in Sign up using Google.

This is typically not what you want. This is my code:. I don’t understand why so many people use the wrong approach to merge documents. Is there itexxt way to detect the page size and then use that same page size for those documents?

This is my code: