How does NVDA recignize table header from untagged pdf
Hello,toggle quoted messageShow quoted text
First, I am assuming you mean that the PDF is tagged, but that the headers are not. I would expect that Column 1 and Row 1 are being considered as headings if no specific header is defined. However
realize, that PDF can be interpreted by more than just Adobe Reader these days, so, it could even be that the reader you are using puts in implied headers.