The congestion in the web browsers is controlled by the Zoom Settings in both Firefox and Chrome. In Firefox access the Zoom settings by clicking the three horizontal bars Settings icon in the top right corner -> Zoom -> click ➕ to increase zoom %.
Instead of changing the size of everything, you can just change the size of the text in Firefox. You can also click the Zoom Text Only option iin the below screenshot to remove the checkmark and toggle Zoom Text Only from on to off if it is already selected.
- Press the Alt key to temporarily bring up the traditional Firefox menus. On the menu bar at the top, click View -> Zoom.
- Select Zoom Text Only. This makes the controls only change the size of text, not images.
In Chrome the Zoom can be changed by clicking the three dots icon in the top right corner -> Settings -> Page zoom -> select the default zoom for all pages from the Page zoom dropdown menu. The page zoom for a specific webpage can be changed to override the default zoom settings for all pages by clicking the three dots icon in the top right corner -> Zoom -> click ➕ to increase zoom %.
In Chrome the default font size for all webpages can be changed by clicking the three dots icon in the top right corner -> Settings -> Font size -> select the default font size for all pages from the Font size dropdown menu. If the preset font size options don't look exactly right there is also a Customize fonts option located below the Font size option. Click the ▶ to the right of where it says Customize fonts to access the Customize fonts page.