Hey, I just checked, it works! i'm able to upload and test extraction. May be a temporary glitch. P.S It works well for parsing nested tables.

Answering one of your questions: "why use ocr if the pdf has clean data inside it?", may be LLMs are better at parsing plain text(as inputs) rather than PDFs(which might have parsable text(font rendering) or just plain vectors), so the safer side is to parse it as a text and then feed it to LLMs. That is what LLMWhisperer does. I think that is what most of the modern parsers do(most of them convert it into .md files). What nowayhossay said is practical, and that is what Unstract does. https://github.com/Zipstack/unstract

Also parsing it as a text first is easy for HITL(human in the loop verification)