Readability
Tired of not being able to read web pages because the type is either too small, too pale, or badly formatted? Try either or both of these javascript 'Favelets'.
The first one gets rid of styling which may make your web reading difficult. See this word-> MAGIC
Click and hold it while dragging it to your bookmarks bar. You will be creating a bookmarklet called MAGIC but you can change its name if you like.
For an example of what it does, go to Bloomberg News which has a black background with orange text links. Click MAGIC once in your bookmarks bar and watch what happens. You can use this for any site you like that you might want to read but find unreadable. You can thank me later though I found this at 456bereastreet years ago.

The second is from LabArc90 and is called Readability. It goes even further than Magic by only displaying the main body of the text in a single column with a large font on a white background. Click this thumbnail for a full-size image of what it does to this post.
Try them both on a Mac or on Windows and see what you think. Your eyes are not getting any younger.
and Save it somewhere where you will know where it is.