Font size adjusting

Safari

• View
• Text size
• ...

or older releases

• Preferences
• Appearance
• Set font, image and encoding options
• Advenced > set additional font and stylesheet options
• See Apple Support (archive)

Internet Explorer

• Page
• Font size / Text size
• ... Source: Microsoft website

Firefox

• Alt
• View
• Zoom
• Text only
• See: Mozzila.org

Opera

• uhm, unavailable!?
• Or? Opera

Chrome

• Settings
• Advanced settings
• Font size ...
• See: Google support

iPad/iPhone/iOS6

.
• Settings
• General
• Text Size
• Drag the slider...