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	<title>High Performance Web Sites</title>
	<link>http://www.stevesouders.com/blog</link>
	<description>Essential knowledge for making your web pages faster.</description>
	<lastBuildDate>Thu, 02 Feb 2012 01:27:44 +0000</lastBuildDate>
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		<title>HTTP Archive: 2011 recap</title>
		<description><![CDATA[I started the HTTP Archive back in October 2010. It&#8217;s hard to believe it&#8217;s been that long. The project is going well: The number of websites archived has grown from ~15K to ~55K. (Our goal for this year is 1M!) In May we partnered with Blaze.io to launch the HTTP Archive Mobile. In June we [...]]]></description>
		<link>http://www.stevesouders.com/blog/2012/02/01/http-archive-2011-recap/</link>
			</item>
	<item>
		<title>JavaScript Performance</title>
		<description><![CDATA[Last night I spoke at the San Francisco JavaScript Meetup. I gave a brand new talk called JavaScript Performance that focuses on script loading and async snippets. The snippet example I chose was the Google Analytics async snippet. The script-loading part of that snippet is only six lines, but a lot of thought and testing [...]]]></description>
		<link>http://www.stevesouders.com/blog/2012/01/13/javascript-performance/</link>
			</item>
	<item>
		<title>Silk, iPad, Galaxy comparison</title>
		<description><![CDATA[In my previous blog post I announced Loadtimer &#8211; a mobile test harness for measuring page load times. I was motivated to create Loadtimer because recent reviews of the Kindle Fire lacked the quantified data and reliable test procedures needed to compare browser performance. Most performance evaluations of Silk that have come out since its [...]]]></description>
		<link>http://www.stevesouders.com/blog/2011/12/01/silk-ipad-galaxy-comparison/</link>
			</item>
	<item>
		<title>Loadtimer: a mobile test harness</title>
		<description><![CDATA[Measuring mobile performance is hard When Amazon announced their Silk browser I got excited reading about the &#8220;split architecture&#8221;. I&#8217;m not big on ereaders but I pre-ordered my Kindle Fire that day. It arrived a week or two ago. I&#8217;ve been playing with it trying to find a scientific way to measure page load times [...]]]></description>
		<link>http://www.stevesouders.com/blog/2011/12/01/loadtimer-a-mobile-test-harness/</link>
			</item>
	<item>
		<title>Add your site &amp; custom fonts</title>
		<description><![CDATA[The Nov 15 2011 crawls for the HTTP Archive and HTTP Archive Mobile are done. Two new things were added. Add your site Our goal is to crawl the world&#8217;s top 1,000,000 URLs. This month we doubled the number of URLs from 17K to 35K. We&#8217;re still a ways away but making progress. But what [...]]]></description>
		<link>http://www.stevesouders.com/blog/2011/11/17/add-your-site-custom-fonts/</link>
			</item>
	<item>
		<title>HTTP Archive growing</title>
		<description><![CDATA[Today the number of URLs analyzed was doubled in both the HTTP Archive (from 17K to 34K URLs) and in the HTTP Archive Mobile (from 1K to 2K URLs). This is a small step toward our goal of 1 million URLs, but it validates numerous code changes that landed recently: 22: update URL lists &#8211; [...]]]></description>
		<link>http://www.stevesouders.com/blog/2011/11/03/http-archive-growing/</link>
			</item>
	<item>
		<title>Velocity Europe &#8211; High Performance Berlin!</title>
		<description><![CDATA[Velocity Europe is less than two weeks away. It&#8217;s happening November 8-9 in Berlin at the Hotel Maritim ProArte. I&#8217;ve heard good things about the venue and am excited to get there and check it out. This event has been a long time coming. A handful of web performance and operations savants (including members of [...]]]></description>
		<link>http://www.stevesouders.com/blog/2011/10/24/velocity-europe-high-performance-berlin/</link>
			</item>
	<item>
		<title>HTTP Archive: new code, new charts</title>
		<description><![CDATA[The HTTP Archive is a permanent record of web performance information started in October 2010. The world&#8217;s top 17,000 web pages are analyzed twice each month to collect information such as the number and size of HTTP requests, whether responses are cacheable, the percent of pages with errors, and the average Page Speed score. The [...]]]></description>
		<link>http://www.stevesouders.com/blog/2011/10/20/http-archive-new-code-new-charts/</link>
			</item>
	<item>
		<title>frontend SPOF survey</title>
		<description><![CDATA[Pat Meenan had a great blog post yesterday, Testing for Frontend SPOF. &#8220;SPOF&#8221; means single point of failure. I coined the term frontend SPOF to describe the all-too-likely situation where the HTML document returns successfully, but some other resource (a stylesheet, script, or font file) blocks the entire website from loading. This typically manifests itself [...]]]></description>
		<link>http://www.stevesouders.com/blog/2011/10/13/frontend-spof-survery/</link>
			</item>
	<item>
		<title>Improving app cache</title>
		<description><![CDATA[I recently found out about the W3C Workshop on The Future of Off-line Web Applications on November 5 in Redwood City. I won&#8217;t be able to attend (I&#8217;ll be heading to Velocity Europe), but I feel like app cache needs improving so I summarized my thoughts and sent it to the workshop organizers. I also [...]]]></description>
		<link>http://www.stevesouders.com/blog/2011/10/03/improving-app-cache/</link>
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