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Extending the Availability of CanIUse

What is CanIUse? CanIUse is an extremely useful tool for quickly visualizing which frontend technologies are compatible with which browsers. You've likely seen us include various CanIUse support table screenshots in our blog. They help give readers a…

Minify JavaScript Files with UglifyJS

What is UglifyJS? UglifyJS is best known as a JavaScript minifier. Minification is a valuable performance enhancing technique as it removes whitespace and unnecessary characters within a file to make it smaller and thus, load faster. There are a few…

How to Improve Server Response Time

Server response time is an important value to track as all website assets are indirectly dependent upon it. If your server response time is slow, then your whole site will be slow, no matter how optimized your other resources are. According to Google…

Full Site WordPress Acceleration

There are many ways to setup a WordPress CDN integration. You can use the CDN Enabler plugin to easily accelerate all of your static assets via the CDN URL or use a caching plugin that also has a CDN integration option. These methods will accelerate…

Scheme-Based Caching

Scheme-based caching allows KeyCDN customers to cache both the HTTP and HTTPS version of an asset from the same site. This is useful for websites that may only deliver certain parts of their site (e.g. checkout page) over HTTPS while the rest of the…

Cookie-Based Caching

Cookies are used to store small pieces of data from a website onto a visitor's browser. These pieces of data help improve the user experience by remembering what they had in their shopping cart, keeping them logged in, and much more. A feature that…

How to Create an Nginx Virtual Host (AKA Server Blocks)

What is a virtual host? A virtual host is an Apache term, however, is commonly used by Nginx users as well. The proper term for Nginx is server block. Both of these words have the same meaning which is basically the feature of being able to host…

Using a HAR Viewer to Visualize Your Assets

A HAR viewer or HTTP Archive viewer is an online tool used to visualize the loading process of a particular website's assets. This is known to many as the waterfall view in a browser's development tools. A HAR viewer can also be found in online speed…

How to Parallelize Downloads Across Hostnames

The Parallelize Downloads Across Hostnames warning was an optimization recommendation previously suggested by many popular speed test tools such as Pingdom, GTmetrix, PageSpeed Insights, and more. This warning is becoming less and less important as…

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