Is there a tool for automated page rendering test?
I was working with Chrome Dev Tool- Console tab to do some data layer testing. When Console throwed an error where an image thumbnail of an embedded product video is showing an error.

I went to the product page in the site and show the video does not have a thumbnail - obviously because referred thumbnail in AEM DAM is not found and server is throwing a 404 error.
My question is having a automated testing tool which can crawl through the entire site and list all such broken internal DAM or CloudFront links. I am not a QA person and my team is extremely lean without dedicated QA resource. Any help would be appreciated.
The video without Thumbnail



