Extracts tabular data from a PDF into an editable XLSX workbook in the browser. Columns that line up across consecutive rows become tables; each one can go to its own sheet, one sheet per page, or a single sheet. Numbers such as 1,200 and 12% become real numeric cells, the first row can be a frozen filtered header. When no table is detected the workbook holds the page text, one line per row, so nothing is lost.