Converting your Google Doc to PDF is a safe, fast and secure way to lock down the document and share it with others.
To export a Google Doc in another format you will first need to download it.
Click File.
Download.
Choose the file type you want to download as - PDF Document is a good option as that means that no-one can edit or add to your work.
The document will now be saved to your Downloads folder on your device and is ready to be exported or shared with others (usually via email).