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    <p>If you want to try and roll your own (this would be a lot of work), you can use the System.Drawing namespace to convert TIF images to a browser-supported format, like PNG or JPG, or a third party library like <a href="http://www.websupergoo.com/abcpdf-1.htm" rel="nofollow noreferrer">AbcPdf</a> to go to PDF as Lazarus suggested. The problem here is that you would have to create and code-behind a toolset for magnification, cropping, and multi-page support, along with whatever else you would want, which could be quite a bit of coding (unless you went to PDF and relied on Adobe Reader). Also, the server-side conversion can be prohibitive for speed if you're dealing with large TIF files or with formats that aren't supported.</p> <p>As far as vendor solutions are concerned, I don't know of any good free viewing plugins off-hand. R Ubben is right; Snowbound's viewer is nice, but if I recall, the AJAX version requires it's own website that you pass the image to, which then gets rendered to the client, which may bring up some security issues (and leaves a bad taste in my mouth anyway). <a href="http://www.atalasoft.com/products/dotimage/documentimaging/default.aspx" rel="nofollow noreferrer">Atalasoft</a> has an excellent AJAX image viewer and a very powerful imaging SDK, but it does cost a bit. My current company has settled on an ActiveX plugin from Pegasus Imaging (recently merged with Accusoft) called <a href="http://www.accusoft.com/prizmviewer.htm" rel="nofollow noreferrer">Prizm Viewer</a>. The viewer itself is quite powerful, can handle many image formats, and is scriptable. It does have drawbacks (beyond being an ActiveX control). We've had some trouble with our desktop deployments as the default install will only push for the current user as opposed to the local machine, but we've fixed that with a post-install registry hack.</p> <p>I would say that, if you have the cash and want a robust imaging solution, go with Atalasoft. Otherwise, Pegasus is fairly cheap and works just fine, unless you have severe aversions to ActiveX. There are lots of other options out there, it's just a matter of how much money you have and how much coding you want to do.</p>
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