In just one U.S. Presidential term, Google has made the Internet experience more consistent across Windows, Mac, Linux, Chromebooks, and even Android and iOS devices, by simply signing into Chrome.

Google Chrome is a freeware web browser that had 32.76-percent worldwide usage share of web browsers as of June 2012, making it the most widely used browser, according to StatCounter, although Internet Explorer now holds the top spot.

With that said, Google Chrome  is notably celebrating its birthday today. Senior Vice President Sundar Pichai took to the official Chrome blog to let the world know that his Google team is remaining focused on the four-year-old product:

Building on four years of security work, recent improvements such as more robust plug-in sandboxing and Safe Browsing for downloads ensure that your browsing is more secure than ever before.

To track Chrome’s journey from a better web to your web, we created a Chrome Time Machine (of sorts) that lets you travel through key moments in Chrome’s history over the past four years. You may even uncover a special birthday gift from the Chrome team, if you find the hidden clue and type in the secret code…

Check out the Chrome Time Machine now, or visit the Chrome blog for more information.