No! 

We have engineered ProveSource with performance in mind. Here are several things you should know about ProveSource and why it had nothing to do with your website performance and speed:

  1. The ProveSource script is being loaded directly from one of AWS (Amazon Web Services) CDNs, depends on your visitor's location. The average load time is less than 200ms.
  2. ProveSource is being loaded asynchronously, meaning it won't block or interfere with your website content loading.
  3. Each of ProveSource's requests or resources is being GZIP compressed.
  4. If one of our servers is down or the script can't be loaded, you have nothing to worry about - it won't affect your visitors or website performance, it will simply do nothing. 

Resources by Google

Read more on asynchronous javascript and page speed best practices here:

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