I have a client who wants to provide me with Microsoft Publisher documents to add to his website. The material will be added via a content management system. I can't just select all and paste into the CMS so I have saved a copy of the Publisher document as an image file, a png. Fine, the doc displays well. Ideally, I should provide a text equivalent for accessibility purposes but the Alt tag won't take more than a hundred words, using IE 8 and Firefox won't even display the contents of the Alt tag at all.
Has anyone an idea as to how to provide a text equivalent?