How do I save a document as a jpeg

My Gmail won’t upload the ODF so I have to screenshot it in order to send in an email.
Does LibreOffice have to be in ODF?
THANKS

Please edit your question (don’t use an answer for that) to describe your “Gmail”. I can attach any kind of files to a message, either with Thunderbird (mail app) or Firefox (web browser). Don’t forget to mention your OS and LO version, as well as the app you connect to Gmail with. IMHO, this is not an LO issue but some sort of “glitch” with your computer/OS/mail app/…