Tag Archives: optimization

Cargar Javascript sin bloquear

By admin | Published: 2010/06/10
Es sabido que el tag <script> es bloqueante y frena el browser hasta que descarga, compila y ejecuta su contenido, por ende es altamente recomendable poner todos los scripts al final de la pagina para no demorar el rendering de la misma.  Adicionalmente, hay algunas técnicas para cargar de manera asincronica (no bloqueante). De todos los [...]
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Load ads defered (without blocking)

By martin | Published: 2010/03/22
Load ads defered (without blocking) Ads’s scripts are evil, most part of them use document.write to create a new script element, and then it load an other script which make an iframe which load other script which make….and finally your page were blocked, not rendering, until ads are loaded. We solved this problem using a very stupid [...]
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Images ondemand

By martin | Published: 2009/09/16
This is a very easy technique to improve web page performance by implementing the tip “Make fewer HTTP Requests“. How? By avoiding downloading images that users will never see. For instance, you can see what happens on firebug when the browser has to download all thumbnails from a popular blog post, which has a [...]
Posted in performance, webapps | Also tagged , , , , , , | 1 Comment