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Could it be extended so it also extracts pictures from pptx and xlsx and run vision to get a description to be added to the text content before indexing?

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Let me look into this

I've been working on something related - extracting tons of data from various formats to allow searching them - and the solution I chose for xlxs and xls files was headless LibreOffice to convert them to CSV. There's also exceljs but I found it didn't work for many old xls files.

I didn't find screenshotting of spreadsheets worked well, vision wasn't very accurate on them. I do use it for PDFs though. For docx it's probably fine either way but I went with LibreOffice -> markdown.

I went with the python libraries (pydoc and pyxls for example), because it's portable and doesn't require a big download to a users system if they don't already have it installed.

My take was on pictures embedded into those documents, I'm not sure screenshotting would help as the text/numeric data is already there. Just saying.

How about jpegs or other scanner images files? We have hundreds of scanned documents that were never pdf wrapped.

hmmmm :)

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