Vivaldi – Adding a Web Panel.
Another great feature of Vivaldi is the ability to add a web panel to the side of the browser.This panel will load the mobile version of a website which works a lot better in the narrow window than the full website.
You can use the web panel to show sites such as Reddit (above) or Twitter.
To add a site, navigate to the site and then press the + on the left.
The add web panel dialog will show, pre-populated with website’s address. Click the + to add the web panel.
Now the site icon for the website will show on the left side, clicking the icon will toggle the web panel for that site.
The web panel can also be resized by clicking and holding the right edge of the web panel and moving it.
Try it out!