{"id":6932,"date":"2021-08-16T10:30:00","date_gmt":"2021-08-16T09:30:00","guid":{"rendered":"https:\/\/www.bronco.co.uk\/our-ideas\/?p=6932"},"modified":"2021-08-13T11:20:06","modified_gmt":"2021-08-13T10:20:06","slug":"the-dangers-of-core-web-vitals","status":"publish","type":"post","link":"https:\/\/www.bronco.co.uk\/our-ideas\/the-dangers-of-core-web-vitals\/","title":{"rendered":"The Dangers of Core Web Vitals"},"content":{"rendered":"\n

After some delay Google has finally rolled out its Page Experience update; which now makes Core Web Vitals a ranking signal; widening the appeal of website speed optimisation.<\/p>\n\n\n\n

For those unfamiliar with testing website speed metrics, it\u2019s very easy to base your assumptions on inaccurate data.<\/p>\n\n\n\n

Lab-based testing<\/h2>\n\n\n\n

Most services for testing site speed are known as lab-based tools. These tools take a snapshot look at your website, measuring results at the time the test is run. Repeat this experiment using another service, or even with the same tool 5 minutes later and the results are likely to fluctuate.<\/p>\n\n\n\n

There are a number of reasons for this. One very simple example is that of load; the more users that access the website, the slower the server responds due to the extra work asked of it.<\/p>\n\n\n\n

Another example is that lab tests can originate from any location. If you were to test your website using a service based on the other side of the world the results will be different to those returned by a tool based on the same network.<\/p>\n\n\n\n

Lab-based tools<\/h2>\n\n\n\n

There are a number of different lab-based tools available, but if we\u2019re looking more specifically at Core Web Vitals, these are the most popular:<\/p>\n\n\n\n