The new tool is a Chrome extension. You may remember Chrome extensions were launched into Beta yesterday - but they're not yet available for Mac users.
Speed Tracer is designed to help web developers recognize slow areas in their applications. The tool can be found in Google's Web Toolkit.
It displays performance along a "Sluggishness Graph." This is one of those things where the lower the score the better. If your y-axis is closer to 0 - you've got a fast app/site. If it's closer to 100 - keep working, buddy.
Here's a video Google put together to provide a visual tour of Speed Tracer.
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!