6. Change Text Size
Click the "+" and "-" next to "Text Size" to increase and decrease text size.
7. Font Type
Change the page font with the "Font" drop-down.
Generally speaking, sans-serif fonts like Helvetica and Verdana look better on screen, while serif fonts like Times New Roman and Georgia look better on paper.
Vera Sans Ecofont includes tiny holes in the characters to minimize ink consumption.
8. Hide Background
Select "Hide" next to "Background" to remove the background and make the text black.
Select "Show" to make the background reappear.
9. Hide Images

Select "Hide" next to "Images" to remove all the images.
Select "Show" to make the images reappear.