Study Confirms Moz Has the Largest Link Data Set

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Backlinks proceed to be particularly helpful for search engine optimisation, appearing as a sign to search engines like google that vouches for each the worth of your content material and the worthiness of your web site.

In measuring the success of your backlink efforts and informing your future search engine optimisation priorities, the knowledge issues. Depending on the instrument you employ, your outcomes can range vastly and — on this case — the extra knowledge the higher.

With this in thoughts, we’re excited to share that Moz has the largest hyperlink knowledge set, in accordance with a examine finished by Perficient.


The hyperlink index examine was finished by Perficient, a revered publicly-traded consulting agency specializing in digital options. This award successful agency commonly publishes insightful research, centered on search engine optimisation developments and subjects. For this examine, Eric Enge, Principal at Perficient, Search Engine Land writer, and well-known search engine optimisation SME, led the investigation.

The examine in contrast three,000 search queries throughout the Technology, Health, and Finance market sectors to judge the hyperlink indexes of Moz, Ahrefs, SEMrush, and Majestic. The queries had been evenly cut up throughout the sectors, after which used to drag outcomes from Google for the high 100 domains. This led to the statistically important pattern dimension of 85,308 domains. Perficient then used the APIs for all 4 hyperlink indexes and evaluated the outcomes. Perficient additionally carried out guide checks to validate outcomes.

Full disclosure: Moz financed the examine, however Perficient carried out it independently — the conclusions are 100% their very own, with no affect from Moz.

“The link graph — the sum total of all of the links that connect the pages on the worldwide web — is the foundation of PageRank and the original Google algorithm. While a lot has changed in 20 years, high-authority links are still a driving force in how Google values and surfaces content. Our goal is to reveal as much of the link graph as possible to understand how Google sees the web and rewards authoritative content, while at the same time helping people focus on the highest quality and most actionable links.” — Dr. Pete Meyers


The Moz hyperlink index reported roughly 90% extra hyperlinks than Majestic, which reported the second-largest. Moz reported the most hyperlinks per area 72% of the time.

In hyperlink analysis, dimension issues. Whether you’re launching a hyperlink constructing marketing campaign, performing aggressive evaluation, or making a Google disavow file, discovering the most full set of hyperlinks to any URL or area instantly impacts the high quality of your work as an search engine optimisation.

Moz reported the most linking domains 60% of the time.

When performing hyperlink analysis, the variety of uncooked hyperlinks is not at all times as essential as the variety of distinctive linking domains. A instrument that stories one million hyperlinks, however all from the identical area, is not practically as helpful as a instrument that stories 1,000 hyperlinks from 100 totally different domains. Links typically repeat throughout the identical area (suppose footer or sidebar hyperlinks), so discovering the most unusual linking domains — versus uncooked hyperlink counts — is commonly a extra helpful metric for SEOs.

Moz narrowly trailed Majestic by zero.2% as having the lowest p.c of duplicate hyperlinks.

Link counts could be inflated when instruments report duplicate hyperlinks. For instance, some instruments may report a hyperlink discovered with each HTTP:// and HTTPS:// as two separate hyperlinks, regardless that one canonicals to the different. A decrease proportion of duplicate hyperlinks can point out higher knowledge high quality.

This is the second examine in current months to find out that Moz hyperlink knowledge stands above the relaxation. In October of 2020, Search Engine Land in contrast eight search engine optimisation instruments, and likewise famous that Moz stories a considerably greater variety of linking domains.


Perhaps simply as essential as the breadth of the knowledge is that Moz instruments make managing search engine optimisation simpler, as these critiques point out:

Carly Schoonhoven, Senior search engine optimisation Manager at Obility: “Moz makes my life easier in so many ways. When doing link building, particularly, I absolutely love the link intersect tool. It’s a really great way to find linking opportunities quickly without having to put in a lot of extra effort. I also love that, you know, any data you need is really only just a couple of clicks away, whether it be site errors or backlinks or keywords. It just really is intuitive and makes finding data really fast.”

Kristina Kledzik, search engine optimisation Manager at Rover: “Moz has been a critical part of my link building strategies and competitive analysis for five years now, through agency work and in-house SEO. It’s easy to use, easy to understand, and adds an extra layer of information to every website you visit. Definitely a must have for any SEO.”

Lily Ray, search engine optimisation Director at Path Interactive: “I love using Moz Link Explorer to see how potential clients are doing compared to their competitors. You can get as granular as looking at the individual URL level, which is really helpful.”

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