HTTP/2 will be the new transmission standard on the Internet in the future. HTTP/2 is the evolution of the conventional HTTP/1.1, established in the 1990s, the transmission protocol (Hyper Text Transfer Protocol) for content on the web, and can be regarded without exaggeration as one of the greatest achievements in web technology in the last 20 years.
The biggest advantage of HTTP/2 is clearly the increase in speed when loading web content. In the past, multiple connections between the server and client had to be opened, but with HTTP/2, all data can be transmitted over a single connection. Additionally, resources (images, JavaScript, CSS files) could only be transmitted one at a time in the past, often holding up the rendering of the entire page. This limitation is also eliminated in HTTP/2 through what is known as multiplexing. The push function increases speed even further. In the past, CSS and JavaScript codes were only loaded after being requested by the user from the server in addition to the regular source code, but now the server sends these files unsolicited and directly on the first call.
Although HTTP/2 is backward compatible, meaning it theoretically still supports delivery without SSL encryption, common browsers like Google Chrome, Mozilla Firefox, and Opera will not do this. Websites without the necessary SSL certificate that are loaded with the new protocol would then no longer be displayed.
Even though the new HTTP/2 standard has not yet been widely adopted by many hosts, this will be the case in the foreseeable future. Website operators should already take care of the transition and benefit from providing secure connections:
- More security between you and your customers and consequently a positive impact on the conversion rate
- Additional ranking bonus
- Significantly higher speed after switching to HTTP/2