Even if you've used Google Docs for years, you may have overlooked several useful add-ons, including:

Conference calls

Hold a conference call without leaving the document (with the "UberConference" add-on).

Foreign languages

Insert accents for 20 languages directly from the sidebar (with the "Easy Accents" add-on).

Table of contents

Quickly jump from place to place in your document directly from the sidebar (with the "Table of Contents" add-on).

For 18 more Google Docs features you might not know about (and how to use them), read our partner HubSpot's blog.