I’ve done a lot of work with the Office file formats over the years, flipping to .zip and messing with the format manually. Lately, because I’ve made courses with 500+ PowerPoint slides with lots of morph transitions, I iterated to find an approach that generally worked with Claude but is never perfect (using the Claude for PowerPoint plugin).
I switched to https://bento.page/ when it showed up here on HN and that’s been much more accurate I think because HTML and CSS is even more represented in training data.