Use the internal navigator
Using the internal navigator, you'll be able to browse the Internet without the need for reducing or exiting OpenBoard, with some additional features giving the ability to capture part of the screen or create applications from sites, and add them to the whiteboard !

Create an application
You can create an application from any site, in order to add it to the board and interact with it like with default applications.
To do so, go to the website you want to capture, click on and confirm the creation by clicking on "Create an application".

When an application is created, it is automatically saved in the OpenBoard library, so you can use it in any document. You'll find them on the applications folder, under a dedicated one called "Web".

Use an external navigator
You can also choose to use an external navigator, by checking the corresponding option in the preferences. Clicking on the Web icon will then launch your favorite navigator in Desktop Mode.
