Aaron Peters http://www.aaronpeters.nl/blog/ Web Performance Optimization blog Thu, 31 Mar 2011 16:00:00 GMT en-us http://www.xul.fr/xul-icon.gif http://www.xul.fr/en/index.php Win a free Velocity Barcelona 2014 conference pass! http://www.aaronpeters.nl/blog/velocity-barcelona-2014-raffle A simple raffle and perhaps your last chance to win a 2-day pass for the great Web Performance and Operations conference (Barcelona, Oct 17-19). Mon, 13 Oct 2014 13:00:00 GMT aaron@aaronpeters.nl (Aaron Peters) Why loading third party scripts async is not good enough http://www.aaronpeters.nl/blog/why-loading-third-party-scripts-async-is-not-good-enough Loading third party scripts async is key for having high performance web pages, but those scripts still block onload. Take the time to analyze your web performance data and understand if and how those not-so-important content/widgets/ads/tracking codes impact page load times. Maybe you should do what we did on CDN Planet: defer their loading until after onload. Mon, 22 November 2011 15:00:00 GMT aaron@aaronpeters.nl (Aaron Peters) Google +1 Button Performance Review http://www.aaronpeters.nl/blog/google-plus1-button-performance-review The performance of the Google +1 Button is disappointing. It has a strong negative effect on page load time. I describe the problems and provide a (partly) solution. Thu, 6 June 2011 15:00:00 GMT aaron@aaronpeters.nl (Aaron Peters) Measure site speed on iPhone in The Netherlands http://www.aaronpeters.nl/blog/measure-site-speed-on-iphone-in-the-netherlands Test how fast your site loads on an iPhone in The Netherlands. You can even record a video to see how it loads! Thu, 25 May 2011 19:00:00 GMT aaron@aaronpeters.nl (Aaron Peters) IE9 Performance Checklist http://www.aaronpeters.nl/blog/IE9-performance-checklist IE9 is different from IE8 when it comes to performance. This checklist sums up many (all?) IE9 specific performance issues and changes. Thu, 10 May 2011 16:00:00 GMT aaron@aaronpeters.nl (Aaron Peters) Prevent double callback execution in IE9 http://www.aaronpeters.nl/blog/prevent-double-callback-execution-in-IE9 When loading a script dynamically, callback code may get executed twice in IE9, like in Steve Souders' Script Onload technique. The solution is simple. Thu, 31 Mar 2011 16:00:00 GMT aaron@aaronpeters.nl (Aaron Peters) Iframe loading techniques and performance http://www.aaronpeters.nl/blog/iframe-loading-techniques-performance An overview of different ways to use an iframe for loading content, ads & widgets and how it affects site performance. Web devs: pay special attention to the Dynamic Asynch Iframe. It's awesome and you may have not heard about it before. Mon, 20 Dec 2010 10:00:00 GMT aaron@aaronpeters.nl (Aaron Peters) Non-blocking Google Adsense ads: improve page speed http://www.aaronpeters.nl/blog/non-blocking-google-adsense-ads-improve-page-speed A single Google Adsense ad increases page load time by approx. 0.4 seconds. Understand why and find out how to easily solve this problem, today. Tue, 31 Aug 2010 13:00:00 GMT aaron@aaronpeters.nl (Aaron Peters)