{"id":2660,"date":"2021-11-23T08:13:58","date_gmt":"2021-11-23T16:13:58","guid":{"rendered":"https:\/\/clarity.microsoft.com\/blog\/?p=2660"},"modified":"2025-02-10T17:23:55","modified_gmt":"2025-02-10T17:23:55","slug":"does-clarity-affect-website-performance","status":"publish","type":"post","link":"https:\/\/clarity.microsoft.com\/blog\/does-clarity-affect-website-performance\/","title":{"rendered":"Does Clarity affect website performance?"},"content":{"rendered":"\n

A question we get asked all the time: Will Clarity slow down my site and affect website performance?<\/p>\n\n\n\n

Since we are talking about speed the quickest answer is No.<\/p>\n\n\n\n\n\n\n\n

However, any JavaScript code which is added to your website could have an impact. Therefore we cannot guarantee your site will not be affected in any way, but our team works to minimize any impact. <\/p>\n\n\n\n

The Clarity team takes website performance seriously; in fact, vs our competitors, we have the least effect on a webpage load time. This is because Clarity\u2019s code is asynchronous and therefore designed to have a very low impact on page load time.<\/p>\n\n\n\n

Asynchronous vs synchronous code<\/strong><\/h4>\n\n\n\n

<\/p>\n\n\n\n

Synchronous code<\/strong> – This is where tasks are performed one at a time and you need to wait for a task to finish before the next one can begin.<\/p>\n\n\n\n

Asynchronous code<\/strong> \u2013 This is where tasks can begin before the previous one finishes. This enables multiple requests concurrently meaning more tasks can be completed in a much shorter period.<\/p>\n\n\n\n

Clarity speed tests<\/strong><\/h4>\n\n\n\n

<\/p>\n\n\n\n

To demonstrate Clarity’s impact we ran tests on five different websites which had Clarity installed. <\/p>\n\n\n\n

Testing conditions: <\/p>\n\n\n\n