Judging by the first screenshot of the multiple canonicalized urls when javascript is on, it's possible you have redirect chains, loops or possibly continuous parameter generation happening. Look at the urls from the javascript crawl and see what differences/commonalities are present. If you filter it to a single sub folder (if there are any in the folder you're crawling), you can also uncheck max redirects to follow, and strip all parameters depending on the need. Also, check ignore robots. txt but report Follow all redirects Crawl all canonicals allow meta-refresh crawl There are several things that could cause what you are seeing depending on the setup, and if you use tag manager to populate/generate things.