The tool was is called Browser Size and was developed in the famous 20% time, where employees are free to work on their own projects. When you type the URL of a website into the tool, an overlay displays the percentage of average web users that can view a section of the site without scrolling.
These percentages are based on sample visitors to the Google web page. You might be surprised how many web users are using very old-school browsers or old computers/operating systems.
You'll want to check your analytics before making any drastic changes based on what you learn from Browser Size. If your audience is more tech-savvy, for example, then the percentage of your users seeing more of your website will be higher.
Meet Your Favorite Search Engine Watch Contributors
Many of SEW's leading expert contributors will be at ClickZ Live, the new online and digital marketing event kicking off in New York (March 31-April 3). Hear from the likes of: Thom Craver, Josh Braaten, Lisa Barone, Simon Heseltine, Josh McCoy, Lisa Raehsler, Greg Jarboe, Dan Cristo, Joseph Kerschbaum, John Gagnon, Eric Enge and more!