Increasing or decreasing the size of the text in your operating system or Web browser can be tricky, but our easy guide walks you through it.

Firefox lets you specify a minimum font size (Tools -> Options -> Content tab -> Fonts and Colors -> Advanced button in Firefox 3.5.2) but that too, only applies to web pages, not the address bar.

How to increase the font size of outgoing emails Gmail offers an option to increase the font size of your text every time you write an email.