Seeing a print preview for your document in Word for the web can seem a little confusing. That’s because it first creates a PDF to preserve the layout and formatting, and then you preview the PDF.
Note: If you’re using Internet Explorer on Windows 7 or an earlier operating system, you’ll need to download and install a PDF viewer, such as the free Adobe Reader app before you can preview your document.
The Word Web App generates a PDF copy of your document.
Tip: If your default PDF viewer is Word, cancel the Word for the web print job, open the document in Word (Edit Document > Edit in Word) and preview it from Word (File > Print).