Because Google renders all pages, they can count links that are inserted with JavaScript but aren’t in the HTML code. Rendering at scale takes a lot more resources than just downloading the HTML of pages. At Ahrefs, we render around 80 million pages per day. That’s why we will have some of these links inserted by JavaScript, but not all of them. We’re currently the only SEO tool that renders during our regular crawling of the web, so we have some link data that other tools don’t have.
However, we only count links inserted with JavaScript if they are in the format of an HTML <a> element with an href attribute. You’ll see these links tagged in the backlinks report as “JS,” like this:
The workload like this whatsapp number list allows both the vendor and the affiliate to focus on. Clicks are the number of clicks coming to your website’s URL from organic search results.
Links from pages with URL parameters
Parameters are additions to a URL like ?tag=something. You may see some of these URLs in our index, but they’re usually parameters that show different content. In many cases, pages with parameters can show the same content. We have many systems in place to consolidate URLs to canonical versions and additional protection for infinite crawl paths. Other tools may not make the same decisions or have the same protections in place. As a result, they may count essentially the same link many times.
Links we try not to store
Here are the links we do our best not to store.
Links from pages with URL parameters
As mentioned above, there are good and bad types of parameters. We try not to store the ones that are duplicated.
Links from pages in infinite crawl paths
These paths create an infinite number of possible URLs. Parameters are one way they could form but so are filters, dynamic content, and broken relative paths for links. As mentioned before, we have many protections in place for links on these types of pages so that they’re less likely to show up in our reports. Respecting canonicalization and the way we prioritize crawling pages are just two of those protections. Every index will have to deal with these infinite spaces, but there’s potential for these pages to inflate link counts.