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During the Google I/O conference this week, one of the presentations from Day 1 was on the subject of Google Chrome's extension system. The long-awaited feature will finally deliver what Firefox and IE users have had for ages: a way to add more tools, services, and additional features to the browser.

If you're playing around with one of the developer builds of Google Chrome, you can test drive this feature before it makes its public debut. Already, there are a handful of extensions available including an ad-blocker called AdSweep, a PageRank checker, and Cleeki, an extension that ports IE8 Accelerators to Chrome.

About Extensions in Chrome

According to articles from both Google Operating System and CIO, here's what we know about how extensions work in Chrome, as described during that I/O presentation:

  1. Extensions use HTML, JavaScript, and CSS so they're easy for developers to write.
  2. You don't need to restart the browser after installing an extension (hurray!)
  3. Extensions will work in all future versions of the browser. Developers won't need to update their extensions with each new release. (No more abandoned extensions!)
  4. Extensions will run as separate processes: one per extension.
  5. Extensions can appear at the bottom of the browser. During the demo, an add-on that displayed new stories from Google Reader was shown in a bar at the bottom of the browser.
  6. Google will control the look of extension buttons to keep Chrome's UI uncluttered and consistent.
  7. Google will build an extension gallery where developers can submit extensions and users can find extensions to install.

Extensions Available Now

There are already some interesting extensions under development, which you can test out now in a developer build of Chrome.

AdSweep

AdSweep is an add-on that hides advertising on web page you visit similar to how AdBlock works. It uses JavaScript to adjust the CSS of a page and is also available as a user script.

Page Rank for Chrome

Page Rank for Chrome (shouldn't that be "PageRank?") is a simple extension that shows the Google PageRank for the current web site.

Cleeki

Perhaps the most fascinating of the three, however, is Cleeki, an extension that delivers the functionality of IE8's Accelerators to other browsers, a list that now includes Chrome. Accelerators are one of the newest (and best) features in the most recent version of Internet Explorer. Available from the right-click menu, they let you quickly perform actions that would have previously required opening a separate web page (e.g. "map this," "translate this," "find on Facebook," "define this," "email this," "Digg this," etc.)

With Cleeki installed (read how to here), you can do many of those same actions, although its appearance is somewhat different. IE8 accelerators are listed in a small right-click menu, but Cleeki actually opens up a secondary window like a pop-up where you can choose from the available actions and see the results.

The size of that window may turn off some users, so it's a shame that Google Chrome doesn't currently allow for a user preference system since Cleeki is actually very customizable (size, skin, behavior, etc.). According to the Cleeki blog, there's a hacking way to customize it, but they haven't shared that info yet...perhaps they will in the future.

Developers, Write Your Own Extensions

In the meantime, while we wait for this feature to hit the public build of Chrome, developers can get cracking writing their first Google Chrome extensions. For help getting started, they should check out these sample extensions and this tutorial which demonstrates how to write a simple extension.

If you're a developer who has built an extension for Chrome, let us know about it in the comments!



Comments

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  1. Good news - extensions were my one major barrier to full-time Chrome adoption. Right now I still have to resort to Firefox for certain tasks, which is a bummer, because it runs at less than half the speed. (I love Firefox, but I love doing things quickly more.)

    Furthermore, the use of web technologies to write the extensions is extremely smart and dramatically lowers the barrier to entry. I'm looking forward to trying my hand at a couple, and they should have a decent ecosystem in a comparatively short time.

    Posted by: Ben Werdmuller | May 28, 2009 8:52 AM



  2. Do they work on Chromium builds for Mac?

    Posted by: MacStories | May 28, 2009 9:20 AM



  3. Hello,

    I just dropped by to bring you attention to some other plugins/extensions which were developed at chromeplugins.org :
    http://www.chromeplugins.org/chrome/customize-your-new-tab-page/

    Also the adaptation to googlepedia extension for firefox in chrome:
    http://www.chromeplugins.org/plugins/googlepedia-extension-for-chrome-get-wikipedia-articles-along-search-results/

    Thanks., you can post about those plugins as well.

    Posted by: AKSHIT | May 28, 2009 9:52 AM



  4. Finally!
    AdBlock (and a few other extensions) is the main reason I'm still using Firefox more than Chrome. For any javascript heavy site (gmail, google reader) Chrome is already my browser of choice, but I go as far as copying link that appears in some post in my google reader on chrome over to firefox, to avoid the ads...

    The big question is, now that firefox's main advantage over chrome is gone, will people move over to chrome en-masse? and if and when they do, will google keep supporting the mozilla foundation?

    Posted by: Elad Kehat Posted on FriendFeed   | May 28, 2009 10:10 AM



  5. Finally! With an adblocking extension Firefox will be no more.

    FF started out great, but lately is has become a bloated, slow mess. Still beats IE, so I stick with it, but I'm looking forward to Chrome once all this is out of dev.

    Might give the dev build a shot for the hell of it, but I hate unstable builds...

     Posted by: Sean Author Profile Page | May 28, 2009 10:51 AM



  6. I am still wondering how to install these extensions

    kindly help

    Posted by: Athar | May 28, 2009 11:39 AM



  7. I wonder if these extensions will be less memory consuming then Firefox, I have like 3 installed, and the majority of the time it sends Firefox into overload!

    Posted by: Josh Chandler Posted on FriendFeed   | May 28, 2009 12:53 PM



  8. It's taken them quite a while for this, but the interface for addons still isn't as streamlined as Firefox or even Opera (which doesn't even require a restart and you can preview addons before confirming their addition).

    Posted by: Television Spy | May 28, 2009 1:14 PM



  9. XMarks, pleeeeeeeeeease :-)

    Posted by: Paul Taylor | May 28, 2009 2:27 PM



  10. It's finally out! I've been waiting for this feature for ages! Hopefully the extensions will not slow down Google Chrome.

    Posted by: free virtual worlds for kids | May 28, 2009 8:22 PM



  11. As Block was one of the major reasons why I stuck with firefox (the other being firebug).

    Now that Ad Sweep it out for Chrome, I'm waiting for the firebug equivalent and then it's time to move to chrome permanently.

    P.S. Ad Sweep works just as well as Ad Block - don't see any ads on RWW!

    Posted by: Jack | May 28, 2009 9:39 PM



  12. hmm, figured Google would fend off an adblock extension for longer than this, seeing as ads are it's main base of revenue...

    Posted by: Mitchell McKenna Posted on FriendFeed   | May 28, 2009 10:06 PM



  13. "Ad blocking" from google, interesting :).

    Posted by: devrim baris acar Posted on FriendFeed   | May 28, 2009 11:28 PM



  14. First extension or tool I need is one to sync my Firefox extensions with the same Chrome extensions where they exist (or a service to recommend substitutes). Until then, I am well and truly locked into Firefox.

    Posted by: Pon Posted on FriendFeed   | May 28, 2009 11:38 PM



  15. I don't know if some of you realized that AdSweep is *NOT* a Google project. That would be pretty incredible if it were!

    Posted by: Garry | May 29, 2009 2:05 AM



  16. More themes and plugins can be found at
    http://www.chromestyles.com

    Posted by: Sona | May 29, 2009 6:55 AM



  17. I still use firefox but I really like the competition that Chrome adds to the browser wars.

    I think that the market share for IE is on the decline

    http://baseballtraderumors.com/

    Posted by: joe | May 29, 2009 7:12 AM



  18. Wow, this is awesome. I am really starting to get tired of memory hog Firefox slowing down to a complete stop on certain sites. Chrome is starting to look like a good alternative seeing as there is not much else out there.

    RT
    www.privacy-tools.echoz.com

     Posted by: Spammy Author Profile Page | May 29, 2009 7:14 AM



  19. that is nice to hear.. im going to switch to Chrome Soon !

    http://www.ezzal.com

    Posted by: Venkadesan Tharshan | May 29, 2009 7:27 AM



  20. bycpyt@mindspring.com

    Posted by: bycpyt@mindspring.com | May 29, 2009 7:27 AM



  21. WEB DEVELOPER Toolbar, like the one for Firefox! Once they have that, my switch to Chrome will be final and permanent.

    Posted by: WD | May 29, 2009 7:41 AM



  22. Plenty more at http://www.mychromeaddons.com

    Posted by: nike | May 29, 2009 9:44 AM



  23. This is pretty cool. I was able to easily at page rank and cleeki. I like Page Rank, however I am not a fan of the additional bar at the bottom of the browser. I don't know if I will find much use from cleeki.

    Now my question is, "How do I uninstall a pluggin?"

    Posted by: LeRoy Lee | May 29, 2009 11:28 AM



  24. Now that I have the Weave add-on for FF, it's going to be very difficult to move me to a new browser. Having all my personal data move between FF installations on my two desktops and notebook is too convenient to give up. When Chrome gets equivalent functionality, I'll be inclined to check it out more thoroughly.

    Posted by: Kent Geek | May 29, 2009 1:27 PM



  25. Wow, kinda sad that the first thing you people want is to be able to steal bandwidth from websites.

    Hurting the sites you use, kinda self destructive wouldnt you think?

    Posted by: Neko | May 29, 2009 3:28 PM



  26. @Neko
    Although I use ad blocking when I find a site I truly like and wish to support I either donate or turn off ad blocking for that specific site.

    Posted by: Dwert | May 29, 2009 3:38 PM



  27. how to remove addon from chrome..

    Posted by: pravin | May 29, 2009 10:34 PM



  28. very useful

    Posted by: http://www.benivolent.com | May 30, 2009 8:10 AM



  29. Anyone know how to write a type-ahead-find extension for chrome???

    http://code.google.com/p/chromium/issues/detail?id=150

    Posted by: proneax | May 30, 2009 9:18 AM



  30. How about an extension that adds a simple "Bookmarks" icon next to the address bar. The official 'bookmarks' bar sucks donkey bells.

    Posted by: MattM | May 31, 2009 7:38 PM



  31. It's about time that Google came out to support extensions. It's been quite a while now and Google really needs to work harder to dominate the web browser wars. It first should focus to make the browser features like IE and Fire Fox and then take the ultimate step to make the browser better than the two. I use all three broswers but due to Chrome's lack of extensions it just used to lie down on my desk top as an icon but with this I may start using it more. I am going to try the extensions for Company Formation. Lets see how it reacts.

    Posted by: Company Formation | June 1, 2009 1:29 AM



  32. Good news,I have waiting a long time to have a extension like the toolbar for IE&firefox.

    Posted by: winbsd | June 3, 2009 9:54 AM



  33. MattM: About the "Bookmarks" icon next to the address bar mentioned above, it has been there for a long time, you just need to add --bookmark-menu to the Chrome shortcut.

    Posted by: Popein | June 4, 2009 6:24 AM



  34. Hello

    Posted by: LV | June 5, 2009 4:04 AM



  35. Hi Really good content you posted in your blog, IT is really too good.

    Posted by: Best Family Restaurant | June 11, 2009 12:54 AM



  36. comeon guys don't be fooled by this, google chrome just wants us to use their search engine, do you really think google would kill all the ads on chrome...Firefox is great, it blocks everything and I mean everything, with google they just can't afford that. Mozilla gets better every year, and there is no way I would go to chrome for any reason. Google will NEVER block everything because it's their business model, they can't afford to.... sad but true.

    Posted by: mark | June 11, 2009 4:40 PM



  37. I am trying Bing as my default search in Chrome. I want to like it. The video search and sampling makes for some snappy info gathering. There seems to be a growing number of things to like. Am I sensing that Microsoft has a new generation of cool programmers beavering away in Redmond? Bring it on guys! More! And thx to Scott for the tip on making Bing the default in Chrome because I had not managed it on my own.

    Posted by: ZK@Web Marketing Blog | June 17, 2009 9:25 AM



  38. I need ImgLikeOpera in Chrome.
    Until then I will use Firefox.

    Posted by: Flexor | June 19, 2009 5:33 AM



  39. You might want to add aniweather, Chrome's first ever animated weather add-on, to the add-on list:

    www.aniweather.com

    Posted by: Jack Stanley | June 27, 2009 4:44 PM



  40. Hi,

    Just created a simple extension to view XML files in a user friendly format - with opening and closing nodes.

    You can download it from http://files.getdropbox.com/u/598146/xmltree.crx

    Looking forward to getting some feedback.

    Josh

    Posted by: Josh | July 22, 2009 4:47 AM



  41. It is very informative. I'm new to the SEO business, trying hard to learn about the pagerank thing these days. The information offered on your website is very very very helpful.Thanks a lot for sharing it.
    I've bookmarked your blog.

    Posted by: SKY | July 25, 2009 8:59 AM



  42. Great Work.I'd like the thank the blog owner for posting it.
    Great Comments. I'd like to thank the readers for sharing more helpful and relevant information.

    Posted by: NZ | July 25, 2009 9:02 AM



  43. In my opinion, traffic to a website is important but is not the key factor leading to high google page rank.
    However, Google just keep changing its standard. It's quite annoying. I've got one websites, whose page rank keep changing all the time, rising and falling.
    Google algorithm change too often. Sometimes, too hard to understand.

    Posted by: Tian | July 25, 2009 9:09 AM



  44. The extensions I need, because I can't do without

    1. Norton Toolbar (I don't trust any web browser - Chrome or otherwise - to store my logins and passwords; Norton Security, yes, but so far it only works with IE and FF)

    2. some extension to control the media player - Winamp, foobar2000 etc. - just like FoxyTunes on Firefox. I listen to music a lot and I don't want to have to switch from one application to another, having to leave the browser window every now and then.

    All the others - would sure be nice, but as long as 1 & 2 are not available, Firefox remains my browser #1, although it *is* a memory-eating, slow-starting hog

    Posted by: Vibov | August 11, 2009 10:45 AM



  45. Google will control the look of extension buttons to keep Chrome's UI uncluttered and consistent.

    Posted by: ugg | September 10, 2009 1:01 AM



  46. Good news,I have waiting a long time to have a extension like the toolbar for IE&firefox.

    Posted by: http://game4home.com | September 23, 2009 11:33 AM



  47. I agree with Ben. Crome an other browsers should go after shorter time and path solutions.
    Thanks, Enviar Torpedo Grátis

    Posted by: Torpedo Gratuito | September 29, 2009 8:54 AM



  48. FYI, we just released our first version of iMacros for Chrome Alpha:

    Please see:
    http://www.iopus.com/imacros/chrome/
    http://wiki.imacros.net/iMacros_for_Chrome

    Cheers,
    Ann

    Posted by: Ann | October 2, 2009 8:37 AM



  49. Crome not only can get a tool bar but also the URL adress field can be worth for searchs - that turn life easyer.
    Construção e Reforma Torpedo

    Posted by: Torpedo | November 12, 2009 1:19 PM



  50. : pas à d_heissler [!]. pouvez mieux faire maintenant! Boss?

    Posted by: entreeouest Posted on FriendFeed   | November 16, 2009 3:30 AM



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