If you want your document to be read but not edited, you can save it as a PDF file. When you do, the PDF will retain your formatting and often be a smaller file than the original document.
Save your document as a PDF
On the File menu, click Save As. Or, you can also save a file by clicking the Save icon in the ribbon.
In the Save As box, type a name for the file.
Important: Give the PDF a different name than the original document. That way, you'll have two files: a Word document you can continue to edit and a PDF file you can share.
If you don't change the name, your document will be converted to a PDF and you won't be able to change it back without using specialized software or a third-party add-in.
In the File Format box, click PDF.
Email a PDF copy of your document from Word
You can send a PDF copy of your document directly from Word.
On the File menu, click Share > Send PDF. Word will create a PDF file and attach it to a new email message.
For information about saving documents as PDFs in other versions of Microsoft Word, go to Save as PDF.