Questions about PDF handling

[Galaxy2023666]

Hi,
When processing PDFs that were originally converted from PPTX on macOS, the output often consists only of images, even though the PDF itself is not an image-based format and can be handled by PyMuPDF. Is there a solution to extract the actual text content in such cases? The pdfinfo output likes follows: macOS Version 12.0.1 (Build 21A559) Quartz PDFContext.