Simple way to collect and look at your website performance metrics quickly, that supports budgeting and adding custom metrics. Visit Link
Tag: Performance
xvfb-run: error: Xvfb failed to start
When trying to run Sitespeed.io in two different terminals on the same server I received the error that Xvfb could not run. By adding -a as an argument it will automatically pick up another thread to run with instead of the default. do xvfb-run -a sitespeed.io
The Pain of Duplicate Scripts
Duplicate scripts on a page means multiple downloads (for Firefox) and a performance hit. You can help this by following Facebooks lead and opting out of an async load if the script element is already in place with if (d.getElementById(id)) {return;} Visit Link
“How to Make a Performance Budget”
A detailed article from Dan Mall about what we mean when we say performance budget and how do you go about setting them. Visit Link
One Step Ahead: Improving Performance with Prebrowsing · An A List Apart Article
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PerfBar
Simple way to collect and look at your website performance metrics quickly, that supports budgeting and adding custom metrics. Visit Link
ImageOptim-CLI · GitHub
Make lossless optimisation of images part of your automated build process Visit Link
Enigma64 – fastest way to get images from Photoshop
Enigma64 – the fastest way to get images from Photoshop Save a minute for each image. Visit Link
Clearing Browser Data | High Performance Web Sites
In Keys to a Fast Web App I listed caching as a big performance win. I’m going to focus on caching for the next few months. The first step is a study I launched a few days ago called the Clear Browser Experiment. Before trying to measure the frequency and benefits of caching, I wanted… Continue reading Clearing Browser Data | High Performance Web Sites
Disable preloading on HTML5 Videos
The preload attribute informs the browser whether or not the video data should begin downloading as soon as the video tag is loaded. It gets even better than that, you can chose how much preloading is done with the options auto, metadata, and none.