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PO.NET component for color PDF to grayscale conversion
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copied!<p>Currently i use <strong>Ghostscript</strong> to convert <strong>color PDF's to grayscale PDF's</strong>. Now i'm looking for reliable .NET <strong>commercial or not commercial component/library</strong> for ghostscript replacement. I googled and I did not find any component/library that is able to do that easily or to do that at all.</p> <p><strong><em>EDIT #1:</em></strong></p> <p><strong>Why Ghostscript does not work for me:</strong></p> <p>I implemented Ghostscript and I'm using it's native API's. The problem is that Ghostscript does not support multiple instances of the interpreter within a single process. -dJOBSERVER mode also does not work for me because i don't collect all job and them process them all at once. It happens that Ghostscript is processing large job which takes around 20 minutes and meanwhile i get some smaller job which has to be processed ASAP and cannot wait 20 minutes. Other problem is that Ghostscript page processed events are not easily to catch. I wrote a parser for ghostscript stdout messages and i can read out processed page number but not for each page when it's processed as ghostscript pushes message for group of processed pages. There are couple of more problems with Ghostscript like producing bad pdf's, duplicating font problems.....</p> <p>You can find one more problem i had with ghostscript here: <a href="https://stackoverflow.com/questions/4718427/ghostscript-ps-to-pdf-inverted-images-problem">Ghostscript - PS to PDF - Inverted images problem</a> </p> <p>-</p> <p><strong>a year after UPDATE:</strong></p> <p>Before a year a go i asked this question. Later i made my own solution by using iTextSharp.</p> <p>You can take a look at the converting PDF to grayscale solution here: </p> <p><strong><a href="http://habjan.blogspot.com/2013/09/proof-of-concept-converting-pdf-files.html" rel="nofollow noreferrer">http://habjan.blogspot.com/2013/09/proof-of-concept-converting-pdf-files.html</a></strong></p> <p>or</p> <p><strong><a href="https://itextsharpextended.codeplex.com/" rel="nofollow noreferrer">https://itextsharpextended.codeplex.com/</a></strong></p> <p>Works for me in most cases :)</p>

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