As you can see, Firefox is on version 15 at the time of this review. As a point of comparison,
Chrome is currently on version 21 even though it only launched in 2008. The benefit, of course, is a browser that is safer and sleeker, with fewer problems because bugs get fixed on a regular basis.
The Firefox that you can download now is in the same speed category as its competition; offers many similar features (stronger in some areas and slightly weaker in others); includes broad, cross-platform support for hardware acceleration and other "future Web" tech and standards; and is a must-have for Android users
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Features and support
Firefox is one of the most progressive major browsers available, an early adopter if not always an innovator. Its features cover the range of browsing essentials, from allowing you to heavily customize your browser while respecting your privacy, to giving developers the tools they need, to supporting the technologies that are driving the future of the Web.
One of the most important features in the modern Firefox is Sync. Sync smoothly synchronizes your add-ons, bookmarks, passwords, preferences, history, and tabs, not only with Firefox on other computers, but also with your Android version of Firefox. It's easy to set up, and if you're concerned about privacy, you can change sync to work with your personal server instead of Mozilla's. Firefox encrypts your data before sending it over an encrypted connection to its servers, where it remains encrypted. Mozilla says that the company would not be able to access it even if somebody there wanted to.
Tabs are a big part of browsing, and Firefox has the best tab management around. Thanks to recent memory-management improvements, you can now comfortably scale from two or three tabs to more than 100 without seeing a major performance hit over time. The aforementioned Panorama lets you group them out of sight until needed, and when you restart Firefox only the last open tab will become active. The others, while visible, won't load their content until you click on them. Panorama's groups let you label them which keeps organizational problems to a minimum.
The overall idea is to make it easier to switch from one tab to another, to group or regroup related tabs, and to get a global view of what's going on with your tabs. It's potentially a big improvement in browser usage, compared to aiming a mouse at a skinny tab, cycling through a list with Ctrl-Tab keystrokes, or pecking at a drop-down menu to reach the tabs that overflowed off into the deep.
Switch to Tab is a minor feature but incredibly useful. Open a new tab and start typing the name of an already-open tab, and the URL will appear in the drop-down with Switch to Tab beneath it. Select that one, and the new tab closes and you're whisked to the pre-existing tab. It's a great trick for cutting down on the amount of time it takes to sift through 45 open tabs, and removes the chance of accidentally having the same tab open twice or more.
You can also drag tabs around to reorder them, pin them as permanent "app tabs" next to the Menu button, or rip them off into their own windows.
Firefox add-ons have long been the brightest feathers in the browser's cap. While there are other more important browsing developments going on to close observers, add-ons remain important to the vast majority of people. The most popular Firefox add-ons have millions of users. The browser supports modern restartless add-ons, which install without needing to reboot the browser, as well as the legacy add-ons that helped drive its growth.
The add-on manager lets you search for add-ons without going to the external Mozilla Add-on Web site. You can create collections of add-ons to share in the Get Add-ons tab, navigate backward and forward through add-on searches, and as mentioned in the Installation section, it blocks add-ons from installing without your approval.
The Bookmarks and History menus, and Download Manager, leave a bit to be desired. They're not bad, but it's clear that they could use some redesigning when compared to the competition. We'd like to see them appear in their own tabs, as they do in Chrome, instead of in separate pop-up windows.
The location bar -- or as Mozilla calls it, the Awesome Bar -- retains familiar features, such as the options to search your history and bookmarks and to tap into your default search engine to provide you with quick results, without having to use the search box.
The "identity block," the colored left-most section of the URL, has been given a refresh to better call out the Web site you're on. The URL bar itself now changes the text color of the URL you're on so that the domain is black, for easy identification, while the rest of the URL is gray. This sounds small but is important, since it's a strong visual cue to help you avoid getting spoofed.
Also on the security front, Firefox was an early adopter of Do Not Track, which indicates via a header notification that you want to opt out of targeted advertisements. However, it requires that the Web site you're viewing, and therefore that site's developers, respect the header itself. While this is great for future-proofing the Web, not many Web sites have taken notice of it. That doesn't mean it won't eventually have a big impact, but that time is not now, and it's better to install an add-on like Adblock Plus or Do Not Track Plus to get more complete ad-tracking protection.
The Content Security Policy blocks one of the most common types of browser threats, cross-site scripting attacks, by allowing sites to tell the browser which content is legitimate. Though CSP also places the burden on the sites' developers, it's backward-compatible and aimed mostly at well-known sites hosting immense volumes of data and content.
Another security improvement is the implementation of HTTP Strict Transport Security (HSTS). This prevents your log-in information from being intercepted by telling Firefox to automatically create a secure connection to a site's servers.
Under the hood, Firefox supports full hardware acceleration across all platforms, which means that the browser draws on your graphics card to speed up complex rendering. You'll see dramatic HTML5 support, including for high-definition WebM video, and broad support for the HTML5 canvas, video, audio, geolocation, drag and drop, and form tags. OpenType fonts are supported, as are CSS3 and newer JavaScript values. WebGL and hardware acceleration give the browser a massive boost, which we'll discuss in the Performance section below.
A new Web Developer menu collates tools for building and debugging Web sites in one location. One such is the ScratchPad tool, which browsers like Opera and Chrome have had for some time. It allows developers to test JavaScript and CSS before implementing it. The Web console feature also has a new autocomplete option and can have its location customized. Another dev tool, unique to Firefox, is a 3D visualizer called Tilt, that lets developers see in real time how their code will render on the site.
Firefox is on the cutting edge of the next generation of Web standards, and that benefits you immensely by offering faster rendering times of Web sites that can do more.
Firefox is one of the most progressive major browsers available, an early adopter if not always an innovator. Its features cover the range of browsing essentials, from allowing you to heavily customize your browser while respecting your privacy, to giving developers the tools they need, to supporting the technologies that are driving the future of the Web.
One of the most important features in the modern Firefox is Sync. Sync smoothly synchronizes your add-ons, bookmarks, passwords, preferences, history, and tabs, not only with Firefox on other computers, but also with your Android version of Firefox. It's easy to set up, and if you're concerned about privacy, you can change sync to work with your personal server instead of Mozilla's. Firefox encrypts your data before sending it over an encrypted connection to its servers, where it remains encrypted. Mozilla says that the company would not be able to access it even if somebody there wanted to.
Tabs are a big part of browsing, and Firefox has the best tab management around. Thanks to recent memory-management improvements, you can now comfortably scale from two or three tabs to more than 100 without seeing a major performance hit over time. The aforementioned Panorama lets you group them out of sight until needed, and when you restart Firefox only the last open tab will become active. The others, while visible, won't load their content until you click on them. Panorama's groups let you label them which keeps organizational problems to a minimum.
The overall idea is to make it easier to switch from one tab to another, to group or regroup related tabs, and to get a global view of what's going on with your tabs. It's potentially a big improvement in browser usage, compared to aiming a mouse at a skinny tab, cycling through a list with Ctrl-Tab keystrokes, or pecking at a drop-down menu to reach the tabs that overflowed off into the deep.
Switch to Tab is a minor feature but incredibly useful. Open a new tab and start typing the name of an already-open tab, and the URL will appear in the drop-down with Switch to Tab beneath it. Select that one, and the new tab closes and you're whisked to the pre-existing tab. It's a great trick for cutting down on the amount of time it takes to sift through 45 open tabs, and removes the chance of accidentally having the same tab open twice or more.
You can also drag tabs around to reorder them, pin them as permanent "app tabs" next to the Menu button, or rip them off into their own windows.
Firefox add-ons have long been the brightest feathers in the browser's cap. While there are other more important browsing developments going on to close observers, add-ons remain important to the vast majority of people. The most popular Firefox add-ons have millions of users. The browser supports modern restartless add-ons, which install without needing to reboot the browser, as well as the legacy add-ons that helped drive its growth.
The add-on manager lets you search for add-ons without going to the external Mozilla Add-on Web site. You can create collections of add-ons to share in the Get Add-ons tab, navigate backward and forward through add-on searches, and as mentioned in the Installation section, it blocks add-ons from installing without your approval.
The Bookmarks and History menus, and Download Manager, leave a bit to be desired. They're not bad, but it's clear that they could use some redesigning when compared to the competition. We'd like to see them appear in their own tabs, as they do in Chrome, instead of in separate pop-up windows.
The location bar -- or as Mozilla calls it, the Awesome Bar -- retains familiar features, such as the options to search your history and bookmarks and to tap into your default search engine to provide you with quick results, without having to use the search box.
The "identity block," the colored left-most section of the URL, has been given a refresh to better call out the Web site you're on. The URL bar itself now changes the text color of the URL you're on so that the domain is black, for easy identification, while the rest of the URL is gray. This sounds small but is important, since it's a strong visual cue to help you avoid getting spoofed.
Also on the security front, Firefox was an early adopter of Do Not Track, which indicates via a header notification that you want to opt out of targeted advertisements. However, it requires that the Web site you're viewing, and therefore that site's developers, respect the header itself. While this is great for future-proofing the Web, not many Web sites have taken notice of it. That doesn't mean it won't eventually have a big impact, but that time is not now, and it's better to install an add-on like Adblock Plus or Do Not Track Plus to get more complete ad-tracking protection.
The Content Security Policy blocks one of the most common types of browser threats, cross-site scripting attacks, by allowing sites to tell the browser which content is legitimate. Though CSP also places the burden on the sites' developers, it's backward-compatible and aimed mostly at well-known sites hosting immense volumes of data and content.
Another security improvement is the implementation of HTTP Strict Transport Security (HSTS). This prevents your log-in information from being intercepted by telling Firefox to automatically create a secure connection to a site's servers.
Under the hood, Firefox supports full hardware acceleration across all platforms, which means that the browser draws on your graphics card to speed up complex rendering. You'll see dramatic HTML5 support, including for high-definition WebM video, and broad support for the HTML5 canvas, video, audio, geolocation, drag and drop, and form tags. OpenType fonts are supported, as are CSS3 and newer JavaScript values. WebGL and hardware acceleration give the browser a massive boost, which we'll discuss in the Performance section below.
A new Web Developer menu collates tools for building and debugging Web sites in one location. One such is the ScratchPad tool, which browsers like Opera and Chrome have had for some time. It allows developers to test JavaScript and CSS before implementing it. The Web console feature also has a new autocomplete option and can have its location customized. Another dev tool, unique to Firefox, is a 3D visualizer called Tilt, that lets developers see in real time how their code will render on the site.
Firefox is on the cutting edge of the next generation of Web standards, and that benefits you immensely by offering faster rendering times of Web sites that can do more.
Performance
Firefox 15 introduces a series of memory-management improvements that dramatically increase the stability of the browser. These changes, covered by the internal Mozilla moniker MemShrink, basically mean that the browser can handle a huge number of tabs and add-ons longer than before. Firefox 15 is eminently stable.
As mentioned earlier, the browser's overall performance has been greatly improved by tying performance to the graphics processing unit (GPU) hardware acceleration. This allows the browser to shove certain rendering tasks onto the computer's graphics card, freeing up CPU resources while making page rendering and animations load faster. The tasks include composition support, rendering support, and desktop compositing.
Firefox 15 introduces a series of memory-management improvements that dramatically increase the stability of the browser. These changes, covered by the internal Mozilla moniker MemShrink, basically mean that the browser can handle a huge number of tabs and add-ons longer than before. Firefox 15 is eminently stable.
As mentioned earlier, the browser's overall performance has been greatly improved by tying performance to the graphics processing unit (GPU) hardware acceleration. This allows the browser to shove certain rendering tasks onto the computer's graphics card, freeing up CPU resources while making page rendering and animations load faster. The tasks include composition support, rendering support, and desktop compositing.
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