Happy New Year to SpeedVitals users! 🎉

We have two new updates to share with you. We have updated Lighthouse version to 12.3.0 and adjusted the CPU Throttling on Mobile devices. The Network Throttling remains the same as before.

The reduced throttling across all our mobile devices will result in better performance scores. Some websites can expect a big improvement to the TBT (Total Blocking Time) metric. Most of the other metric will not have a significant improvement.

If you are comparing reports before and after this change, make sure you separate lab scores from real-world field data. This is especially important when you are checking Core Web Vitals trends with the SpeedVitals Core Web Vitals Checker or comparing your site with broader web performance benchmarks.

Cloudflare introduced Argo in 2017 as an add-on premium service for Cloudflare users. Argo uses smart routing in real time to avoid network congestion. It dynamically finds the most optimal routes through the Cloudflare network and reduces the response times of your website. If you are still comparing CDN options, start with our best CDN provider benchmarks.

Back Forward Cache is a technique browsers use to instantly load a Web Page when the Back or Forward buttons on the browsers are pressed.

Back/Forward Cache is currently supported by all major browsers including Google Chrome, Mozilla Firefox, and Safari. According to Google Chrome's data, about 10% of all navigations on Desktop are either Back or Forward. This number goes all the way to 20% in the case of Mobile browsing.

By ensuring that your website is eligible for Back/Forward Cache, you can make a dramatic difference to the Page Speed and User Experience of your website. It can also complement other stability work such as fixing layout shift during normal page loads.

Google PageSpeed Insights is a great free tool for testing Web Performance and checking Core Web Vitals. However, it lacks many advanced features such as a Waterfall Chart and the ability to select the test location and device.

Round Trip Time (RTT) is a metric that measures the time taken by a network packet to travel from sender to receiver and then back from receiver to sender.

RTT = Latency (Client to Server) + Server Processing Time + Latency (Server to Client)