In Firefox, you can change the default zoom level by going to about:config and setting the value of layout.css.devPixelsPerPx. If you want things larger, try 1.

In Firefox, you can change the default zoom level by going to about:config and setting the value of layout.css.devPixelsPerPx. If you want things larger, try 1.2 or 1.5. If you have a 4k or larger display, try 2.0.