Even if you have 20/20 vision, there’s no need to strain your eyes unnecessarily. So, go ahead and make that text on web pages bigger.
To zoom text in Vivaldi on iOS:
Single Key Shortcuts are a great way to get things done quickly and efficiently, without needing both hands or complicated finger gymnastics on the keyboard to reach multiple keys simultaneously. For example, you can use Single Key Shortcuts to zoom in and out on web pages.
To enable Single Key Shortcuts, go to Settings > Keyboard > Keyboard Shortcuts.
To zoom in and out, press the following numbers either above the letters on the keyboard or on the number pad:
Usually, mobile browsers are optimized for smartphones but not for tablets. Vivaldi’s user interface is designed to work just as well on tablets, Chromebooks, and screens in cars by allowing you to change the zoom level of the browser interface.
To increase or decrease the size of Vivaldi on Android’s user interface:
In Tip #119, we shared how to change the Zoom level of text in Vivaldi on Android. Today we have an even cooler option to show you.
Did you know that you can add an option to the Vivaldi menu that allows you to change the zoom level only on the open site? And it will stay the same for that website even if you navigate to other sites and then back again, or open the link in a different tab. If the developers of the website have done a good job, the text should also reflow nicely.
To enable and use zoom per site:
Web Panels are customizable Tabs which allow you to keep your favorite sites easily accessible in the side Panel of Vivaldi. And just like with web pages open in a tab, you can adjust the zoom levels for web pages added to Web Panels as well.
To increase or decrease the size of the content in Web Panels:
and 
at the top of the Web Panel to zoom in and out.Zoom level is retained through closing and reopening of the Web Panel and browser restarts.
There’s no need to strain your eyes with Vivaldi. If the buttons on the toolbars are too small and text uncomfortable to read, increase the zoom levels to see them better. If you’d like to make the user interface and webpages smaller, you can do that too.
To adjust user interface zoom:
To also change the size of the content on web pages.
Take a look at the Help page about Zoom options in Vivaldi to learn about other zooming methods.
Whether the text on the phone screen is too small for you to read or the opposite, your eyesight is great and you want to fit more text on the screen, Vivaldi for Android has a text scaling setting for you to make use of.
To change zoom level for texts on Vivaldi for Android:
Vivaldi menu > Settings > Web Pages > Accessibility.You can also enable Force enable zoom for instances, where the web page tries to prevent text scaling.
When you use the Zoom slider/buttons or shortcuts to change a tab’s zoom level, the value jumps by 10 (90%, 100%, 110%, etc.). To set a custom value:
By default, when you change the zoom level, it applies to the tab you have open, so all websites you visit in that tab will have the same zoom level, but if you open the website in a different tab it will have the default or that tab’s zoom level. If you prefer to set the zoom level for websites instead of tabs:
Then, no matter when you visit the website, it’ll have the zoom level you set for it in the past.
