Support submission of PDF and other document formats

[timpaul]

The tool currently only accepts images, but most forms are in PDF, Word or another document format.

The Claude web-based chatbot can accept PDFs, but the API doesn't seem to be able to. I'm not sure how it does it - it's possible it converts the doc to images before processing them - which is perhaps something this tool could do as well?

[timpaul]

Anthropic have a guide on processing slide decks by converting them to PDFs, then converting the PDFs to images:

https://github.com/anthropics/anthropic-cookbook/blob/main/multimodal/reading_charts_graphs_powerpoints.ipynb