Text PDFs convert best
If you can select text in the PDF, that text becomes editable in Word.
Scanned PDFs need OCR first
A scan has no text layer. Run OCR PDF first, then convert.
What isn't kept
Text and headings come across. Images and the exact layout aren't kept, so review the document before you share it.
Good to know
Expect the text and paragraphs to come across; complex page layouts are simplified. Need tables? PDF to Excel handles those better.
Questions
Is it free and without upload?
Yes. Conversion runs in your browser and the file stays on your device.
Related: Scan paper documents with your phone · Make a scanned PDF searchable · Convert PDF tables to Excel