Google Chrome
is a fast and easy to use web browser that combines a minimal design
with sophisticated technology to make the web safer. It has one box for
everything: Type in the address bar and get suggestions for both search
and web pages. Will give you thumbnails of your top sites; Access your
favorite pages instantly with lightning speed from any new tab. Google
Chrome is an open source web browser developed by Google. Its software
architecture was engineered from scratch (using components from other
open source software including WebKit and Mozilla Firefox) to cater for
the changing needs of users and acknowledging that today most web sites
aren’t web pages but web applications. Design goals include stability,
speed, security and a clean, simple and efficient user interface.
• Sandboxing.
Every tab in Chrome is sandboxed, so that a tab can display contents of
a web page and accept user input, but it will not be able to read the
user’s desktop or personal files.
Google say they have “taken the existing
process boundary and made it into a jail”. There is an exception to this
rule; browser plugins such as Adobe Flash Player do not run within the
boundaries of the tab jail, and so users will still be vulnerable to
cross-browser exploits based on plugins, until plugins have been updated
to work with the new Chrome security. Google has also developed a new
phishing blacklist, which will be built into Chrome, as well as made
available via a separate public API.
• Privacy. Google
announces a so-called incognito mode claiming that it “lets you browse
the web in complete privacy because it doesn’t record any of your
activity”. No features of this, and no implications of the default mode
with respect to Google’s database are given.
• Speed. Speed improvements are a primary design goal.
Stability
• Multiprocessing. The
Gears team were considering a multithreaded browser (noting that a
problem with existing web browser implementations was that they are
inherently single-threaded) and Chrome implemented this concept with a
multiprocessing architecture. A separate process is allocated to each
task (eg tabs, plugins), as is the case with modern operating systems.
This prevents tasks from interfering with each other which is good for
both security and stability; an attacker successfully gaining access to
one application does not give them access to all and failure in one
application results in a “Sad Tab” screen of death. This strategy exacts
a fixed per-process cost up front but results in less memory bloat
overall as fragmentation is confined to each process and no longer
results in further memory allocations. To complement this, Chrome will
also feature a process manager which will allow the user to see how much
memory and CPU each tab is using, as well as kill unresponsive tabs.
User interface
• Features. Chrome has
added some commonly used plugin-specific features of other browsers into
the default package, such as an Incognito tab mode, where no logs of
the user activity are stored, and all cookies from the session are
discarded. As a part of Chrome’s javascript virtual machine, pop-up
javascript windows will not be shown by default, and will instead appear
as a small bar at the bottom of the interface until the user wishes to
display or hide the window. Chrome will include support for web
applications running alongside other local applications on the computer.
Tabs can be put in a web-app mode, where the omnibar and controls will
be hidden with the goal of allowing the user to use the web-app without
the browser “in the way”.
• Rendering Engine.
Chrome uses the WebKit rendering engine on advice from the Gears team
because it is simple, memory efficient, useful on embedded devices and
easy to learn for new developers.
• Tabs. While all of the
major tabbed web browsers (e.g. Internet Explorer, Firefox) have been
designed with the window as the primary container, Chrome will put tabs
first (similar to Opera). The most immediate way this will show is in
the user interface: tabs will be at the top of the window, instead of
below the controls, as in the other major tabbed browsers. In Chrome,
each tab will be an individual process, and each will have its own
browser controls and address bar (dubbed omnibox), a design that adds
stability to the browser. If one tab fails only one process dies; the
browser can still be used as normal with the exception of the dead tab.
Chrome will also implement a New Tab Page which shows the nine most
visited pages in thumbnails, along with the most searched on sites, most
recently bookmarked sites, and most recently closed tabs, upon opening a
new tab, similar to Opera’s “Speed Dial” page.
Google Chrome 27.0.1453.93 Beta | 32.1 MB
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source: multy-software
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