Pdf Comprsion using .net

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C#

ASP.NET

itextsharp

Is this possible to compare two pdf file using itextSharp Library?

Posted 21-Oct-13 1:00am

Ashwani Gusain

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Ranjan.D 21-Oct-13 7:06am

I don't think its possible. Source - http://itextsharp.10939.n7.nabble.com/Comparing-PDF-Files-td1884.html

However at the minimum you could do binary comparison to determine the PDF documents are same.

Zoltán Zörgő 21-Oct-13 7:19am

What kind of comparison do you want exactly? Two PDFs rendering the same result could have really different inner structure.

Ashwani Gusain 21-Oct-13 9:38am

I want all inner structure differences,like word missing,

Zoltán Zörgő 21-Oct-13 12:05pm

You haven't got my point, I meant the pdf-s inner structure, not the structure you see. Your only option is using some OCR. Are you willing to spend some money?

Ashwani Gusain 22-Oct-13 0:44am

can u tell me the way to how to spend money using my programing skill

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*Karthik Harve* · Answer 1 · 2013-10-21T01:08:00

Solution 1

Hi,
refer below article.

Comparing two PDF file in C#[^]

the article suggests to break the PDF files in to words and compare the words and display the difference. article uses ITextSharp library and the code is in VB which can easily converted in to C#.

hope it helps.

Posted 21-Oct-13 1:08am

Karthik Harve