If you want to show line numbers in a Google Docs document, then you can do it using the Line Numbers for Google Docs Chrome extension.

Learn how to use add-ons in Google Docs to improve your productivity. This guide includes instructions for installing, using, and managing Google Docs add-ons, as well as tips for finding the best ...

You can double space in Google Docs using the "Line spacing" menu, which is available both on the website and in the mobile app.

How to insert image captions in Google Docs with inline texts Text wrapping options in Docs control how text behaves around images.