URL Blocking

To measure the performance impact of a particular resource (CSS/Image/JavaScript) on a Web Page, ⚡️ SpeedVitals has the URL Blocking Feature.

This feature can be accessed from the ⚙️ More Options Button.

In Block URLs Text Field, you need to enter one URL per line. This field also accepts wildcard.

Here are some examples:

Block Google Analytics

https://www.google-analytics.com/analytics.js

Block All resources from JSDelivr CDN

https://cdn.jsdelivr.net*

Block All Images from a WordPress Site

https://www.example.com/wp-content/uploads*

Block All Resources from all Subdomains of google.com

*.google.com*

Block all PNG Images

*.png

Block all CSS Files

*.css

caution

Make sure you only enter One URL Per Line. Press the Enter/Return Key to go to the next line. You can enter a maximum of 10 URLs in this field.

Here's an example of how the text field should look like if multiple URLs are blocked:

Block Google Analytics & Facebook Pixel

https://www.google-analytics.com/analytics.js
https://connect.facebook.net/en_US/fbevents.js