Chromium Blog

All About Safe Browsing

Tuesday, January 31, 2012

Safe Browsingrecently announcedvideo on Safe Browsing

turn these features offmaking the web a safer placeSafe Browsing APIotherbrowsersPosted by Niels Provos, Software Engineer, and Ian Fette, Product Manager

New in Google Chrome Beta: More Extension APIs, Free Hoodies

Monday, August 23, 2010

Since we launched the Google Chrome extension system, one of the most frequent requests we’ve gotten is to add the ability to integrate with the context menu (the menu that pops up when you right-click on a link, image, or web page).

Now in Google Chrome Beta, developers can do just that. The new context menu API allows extension developers to register menu items for all pages or for a subset of pages. Developers can also register menu items for specific operations, like right-clicking on an image or movie. For example, you could create an extension that makes it easy for users to share interesting images from images.google.com with their friends on Google Buzz.
Some users have lots of extensions installed. To help these users avoid ending up with gigantic unwieldy context menus, Google Chrome automatically groups multiple menu items from the same extension into a sub-menu.

We’d also like to announce two new experimental APIs. These APIs aren’t quite ready for prime-time yet, but we’re really excited about them and couldn’t wait to get your feedback.

The omnibox API allows extension developers to integrate with the browser’s omnibox. With this API, you can build custom search support for your favorite website, keyboard macros to automate tasks, or even a chat client right into the omnibox.
The infobars API allows extension developers to display infobars across the top of a tab. These infobars are built using normal HTML, so they can be heavily customized and interactive.

For the complete list of new extension APIs in Google Chrome beta, see the docs. And let us know if you make something cool. If we like it, we’ll send you a free extensions hoodie and may even feature you in the gallery.

We look forward to seeing what you come up with!
Posted by Aaron Boodman, Software Engineer

Do You Know How Slow Your Web Page Is?

Wednesday, July 28, 2010

The Web Timing draft specification presents a standard set of metrics for measuring web page load time across browsers. We’re happy to announce that in Chrome 6, web developers can now access these new metrics under window.webkitPerformance.
Measuring web page load time is a notoriously tricky but important endeavor. One of the most common challenges is simply getting a true start time. Historically, the earliest a web page could reliably begin measurement is when the browser begins to parse an HTML document (by marking a start time in a <script> block at the top of the document).
Unfortunately, that is too late to include a significant portion of the time web surfers spend waiting for the page: much of the time is spent fetching the page from the web server. To address this shortcoming, some clever web developers work around the problem by storing the navigation start time in a cookie during the previous page’s onbeforeunload handler. However, this doesn’t work for the critical first page load which likely has a cold cache.
Web Timing now gives developers the ability to measure the true page load time by including the time to request, generate, and receive the HTML document. The timeline below illustrates the metrics it provides. The vertical line labeled "Legacy navigation started" is the earliest time a web page can reliably measure without Web Timing. In this case, instead of a misleading 80ms load time, it is now possible to see that the user actually experienced a 274ms time. Including this missing phase will make your measurements appear to increase. It’s not because pages are getting slower – we’re just getting a better view on where the time is actually being spent.

Across other browsers: Web Timing metrics are under window.msPerformance in the third platform preview of Internet Explorer 9 and work is underway to add window.mozPerformance to Firefox. The specification is still being finalized, so expect slight changes before the browser prefixes are dropped. If you’re running a supported browser, please try the Web Timing demonstration and send us feedback.
Posted by Tony Gentilcore, Software Engineer

Google Chrome Developer Update - Google I/O recap, new APIs

Monday, June 7, 2010

Google I/O recap
If you missed the Day 1 keynote this year, it was all about the open web. There were some amazing demos from Mugtug, TweetDeck, Adobe, and Sports Illustrated demonstrating the full potential of HTML5. There was a preview of WebM/VP8, a high-quality, open, and web-optimized video format. We saw the announcement of the Chrome Web Store, which later this year will provide a new and exciting channel for developers to distribute their web apps and reach new users. We also launched the Google Font API, which allows you to add high-quality web fonts to any web page. Lastly, there were all of the great Chrome sessions. Videos have been posted on the Google I/O website:

What's new for developers in Google Chrome?
The Google Chrome Dev channel is now up to 6.0.422.0. It includes a bunch of new features to think about when developing your apps:

In addition to the above, there are new experimental extension APIs:

You can try out these features by launching a Dev-channel version of Google Chrome with the --enable-experimental-extension-apis flag and adding the ‘experimental’ permission in your manifest.json file. Please keep in mind that these features are still under development and are not 100% stable yet.
Upcoming developer events
For those of you based in New York, there’s an upcoming Chrome Extensions hackathon in our local office on June 10, 2010. We also have a five day DevFest starting June 28, 2010 in Sydney, Australia. Google Chrome will be featured on Wednesday, June 30. Stay tuned for more details!
For the latest news and upcoming developer events, subscribe to this blog and follow us on Twitter @ChromiumDev.
Posted by Eric Bidelman, Google Chrome Developer Relations

A 2x Faster Web

Wednesday, November 11, 2009

Today we'd like to share with the web community information about SPDY, pronounced "SPeeDY", an early-stage research project that is part of our effort to make the web faster. SPDY is at its core an application-layer protocol for transporting content over the web. It is designed specifically for minimizing latency through features such as multiplexed streams, request prioritization and HTTP header compression.
We started working on SPDY while exploring ways to optimize the way browsers and servers communicate. Today, web clients and servers speak HTTP. HTTP is an elegantly simple protocol that emerged as a web standard in 1996 after a series of experiments. HTTP has served the web incredibly well. We want to continue building on the web's tradition of experimentation and optimization, to further support the evolution of websites and browsers. So over the last few months, a few of us here at Google have been experimenting with new ways for web browsers and servers to speak to each other, resulting in a prototype web server and Google Chrome client with SPDY support.
So far we have only tested SPDY in lab conditions. The initial results are very encouraging: when we download the top 25 websites over simulated home network connections, we see a significant improvement in performance - pages loaded up to 55% faster. There is still a lot of work we need to do to evaluate the performance of SPDY in real-world conditions. However, we believe that we have reached the stage where our small team could benefit from the active participation, feedback and assistance of the web community.
For those of you who would like to learn more and hopefully contribute to our experiment, we invite you to review our early stage documentation, look at our current code and provide feedback through the Chromium Google Group.
Posted by Mike Belshe, Software Engineer and Roberto Peon, Software Engineer This post is cross-posted at the Google Research Blog

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Chromium Blog

All About Safe Browsing

New in Google Chrome Beta: More Extension APIs, Free Hoodies

Do You Know How Slow Your Web Page Is?

Google Chrome Developer Update - Google I/O recap, new APIs

A 2x Faster Web

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