I think search engine is not a bad idea, but a researchable database (for example MySQL) whould be better Here is an example for spreadsheets, but I think spre

I think search engine is not a bad idea, but a researchable database (for example MySQL) whould be better Here is an example for spreadsheets, but I think spreadsheets is easy, because there are some solutions like MySQL workbench. https://search.equityfront.com/ https://search.equityfront.com/ But for PDFs which has unstructured and semi-structured data and vectors, it's hard to find a good solution to extrac/convert them into MySQL