Firefox, the world’s most significant web browser has finally unveiled its new version, and with it a slew of improvements. If you’re not already using it to browse this page, then read on to learn all about its new features before getting a hold of it.

Firefox 3 has undergone a significant makeover, with sleeker icons and a cleaner look. The ‘Go back one page’ button is bigger and elements in the location bar, like titles and URLs, are more easily recognizable. I was also impressed that it finally passes the Acid2 Test, so Firefox can be guaranteed to render any web page out there.

Mozilla have worked on improving the bookmarking system in Firefox. To add a new bookmark all you need to do is star a site from the address bar. Firefox also lets you search bookmarks and history straight from the bar itself. Places, the system for handling your bookmarks and history, now shows all sorts of information like recently starred pages, most used tags or most visited pages. I’m not sure everybody will make use of all that info, but it’s still nice to find it there.

The download manager in Firefox 3 is improved and not only will it remember your downloads even after quitting the browser, it will also allow you to pause/start/stop downloads at any time. Similarly, Firefox will automatically look for updates to your add-ons and features a built-in search box to browse the Mozilla add-ons site for new extensions. However you’ll find most add-ons still don’t support the latest version of Firefox.

In terms of performance you’ll find that Firefox loads pages much faster and seems to handle memory usage much better than before. This is a big improvement considering that that was the main concern in previous versions.

Security has also been improved in Firefox, with one-click site info and malware protection. You can also set specific permissions (like text size, image blocking or cookies) for each website you visit. You’ll find Firefox 3 also interacts with Windows CardSpace and OpenID, two services which unify your identity online, whilst securing it.

Firefox version 3 really feels like a big step up. It includes lots of improvements, notably in the design and in improving the whole user experience, with a better download manager and improved bookmarking system. I’m not sure everybody will use Places or tags that much, but they’re a welcome addition. True to its roots, Firefox has also bettered its security features. But for me the real highlight of this new release has to be the performance enhancements. We’ll have to see as soon as add-ons are supported, but this new version should fare much better than previous ones. If you’re a Firefox user, make sure you update now.