Changing font size
To change the default font size on Microsoft Edge using predefined settings, use these steps:
1. Open Microsoft Edge.
2. Click the Settings and more (three-dotted) button from the top-right.
3. Click on Appearance.
4. Under the "Fonts" section, use the Font size drop-down menu and select a predefined option:
• Very small.
• Small.
• Medium.
• Large.
• Very large.
eg
Once you complete the steps, the new font size should be reflected in the settings page as well as on websites you visit.
Customizing font style
To customize the default font styles and size more granularly, use these steps:
1. Open Microsoft Edge.
2. Click the Settings and more (three-dotted) button from the top-right.
3. Click on Appearance.
4. Under the "Fonts" section, click the Customize fonts option.
5. Use the Font size slider to adjust the size of the font size.
6. Use the Minimum font size slider to increase or decrease the minimum size.
7. Use the available drop-down menus to choose a different font style for "Standard font," "Serif font," "Sans-serif font," and "Fixed-width font."
After you complete the steps, the browser will use the font size you specified for settings and websites, and it'll use the new default font styles when a website you visit doesn't have a defined font family.
We're focusing this guide on Windows 10, but these instructions should also work for the variant of the Microsoft Edge for older versions of Windows and macOS.
Source: Windows Central
From <https://www.windowscentral.com/how-change-default-fonts-settings-new-microsoft-edge>