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Convert MHT/MHTML to MAFF?

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OK, I have given up on MHTML, but I have a lot of these files that were created by IE5 that I cannot replace since the websites no longer exist. These files will not open even with the add0ns. What I need is to convert these files to an archive format supported by Firefox (MAFF?). I am currently using Windows XP SP2, if that makes a difference. I thought I saw a reference on Google about a way to convert them to XML or XHTML, which I suppose would work too, but now I cannot find that either. I have MHT installed on Firefox.

OK, I have given up on MHTML, but I have a lot of these files that were created by IE5 that I cannot replace since the websites no longer exist. These files will not open even with the add0ns. What I need is to convert these files to an archive format supported by Firefox (MAFF?). I am currently using Windows XP SP2, if that makes a difference. I thought I saw a reference on Google about a way to convert them to XML or XHTML, which I suppose would work too, but now I cannot find that either. I have MHT installed on Firefox.

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http://en.wikipedia.org/wiki/MHTML

MHTML is a non-standard format so it's not surprising that neither the MAF extension for Firefox or the UnMHT extension will display those old IE5 saved MHT files. I never saved any MHT files using IE, which I haven't used since 2003 - so can't verify it. My suggestion is to use either IE or an Opera 9.50 plus version to view those old MHT files from IE and then save them as "Web Page, complete" in HTM / HTML format, where you end up with an HTML file and a separate "attached" folder with the images, CSS, etc that is related to the save web page. Just a suggestion, I don't know how well that will work as far as saving in that "split" format. I do know I can do that in Firefox with MHT files I had saved using UnMHT.