The steps
Open the converter, add your PDF, let it read the document, then download the .docx it produces. The output keeps your original file name with the extension swapped, so invoice.pdf comes back as invoice.docx.
- Add one or more PDF files
- Wait for the text layer to be read and rebuilt
- Download the .docx, or the whole batch as a ZIP
- Open it in Word, LibreOffice or Google Docs to check the result