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The use of icons The Implementation of font-based icons into a website has been growing in popularity for some time now as they are easy to use, small in size, and fast. According to The Next Web, an icon font can load up to 14% faster than images…

Sometimes when checking your Chrome browser's console, you may have noticed an error such as net::ERR_BLOCKED_BY_CLIENT appearing for a particular site you are visiting or working on. This error is commonly caused due to one of the extensions…

What is a Content Security Policy? A Content Security Policy (CSP) is an additional layer of security delivered via an HTTP header, similar to HSTS. This policy helps prevent attacks such as Cross Site Scripting (XSS) and other code injection attacks…

In many cases, websites contain multiple JavaScript and CSS files which must all be fetched from the server in order to fully load the web page. This process of downloading each file separately however, takes more time as additional requests must be…

HTTP Live Streaming, or HLS, is a popular live-streaming and on demand video technology developed by Apple. HLS uses the HTTP protocol which allows users to stream from a regular web server as opposed to specialized streaming servers. KeyCDN helps…

What are entity tags? Entity tags, or known as the ETag HTTP response header, are cache validators which help the browser determine if it can retrieve the requested resource from local cache or if it must be retrieved from the server. This mechanism…

If you're familiar with web development, you've likely come across the popular web server software Nginx. Nginx has gained a lot of popularity in recent years due to its high performance, scalability, and flexibility. One of the features that make…

If you're concerned about website performance, then reducing DNS lookups is an essential step that you can take. DNS (Domain Name System) lookups refer to the process of translating a domain name into an IP address. Each time a browser requests a…

What is an async script? Loading scripts using async (asynchronous) means that the loading process of your scripts will not interrupt the rendering of your webpage. This allows your web page to render more quickly as parsing is not paused every time…

Character set defined A character set (charset) is a list of characters that browsers use in order to display a web page. Each character corresponds to a specific number, and depending on which charset is defined by the website will determine how the…