Majestic: What Trust Flow and Citation Flow Are, and Aren't

Trust Flow and Citation Flow aren't calculated by Google or by any neutral authority. They come from Majestic, a UK-based SEO software company, built from its own web crawler and link index. That matters because it settles the status of the number: it isn't an objective measurement of the internet, it's one vendor's reading of whatever data its own crawler managed to collect.

That index has a long history. According to the technical documentation Majestic publishes in its own help centre (checked on 10.08.2026), the Historic Index holds 21.7 trillion URLs from 4.5 trillion crawled pages, with data going back to 6 June 2006. Alongside it sits the Fresh Index, a more recent rolling window with 615.8 billion URLs from 193.9 billion crawled pages, covering 11 April to 9 August 2026 at the time of checking. The same documentation states the Historic Index is refreshed roughly once a month given the processing load involved, while the Fresh Index is meant to update daily.

Starting in 2006 makes Majestic one of the longest continuously running independent link indexes on the market, built on its own crawling infrastructure rather than purchased or third-party-derived data. Ahrefs and Semrush also run their own crawlers, but the depth of its own index has long been Majestic's core selling point.

There's a practical consequence worth knowing before reading any of these numbers: two different tools will almost never agree on the Trust Flow or Domain Rating of the same domain, because each one crawls a different slice of the web at a different moment with its own crawler, then runs its own formula over that data. There is no single "correct" number between them, only different indexes.

Citation Flow measures quantity, not quality. Majestic describes it as a score reflecting how many links point at a URL or domain, calculated using what the company calls "advanced network maths": it doesn't just count links, it also factors in the wider network of sites linking into the sites that link to you, and weighs that structure. The underlying principle stays simple, though: the more a page is linked to, the higher its CF, regardless of how trustworthy the linking sources are.

Trust Flow starts from a different idea: proximity to a circle of trusted sites, what Majestic calls the seed set. Dixon Jones, Majestic's co-founder, explains in a company blog post (published 11.05.2017, updated 04.02.2020) that this seed set is made up of "hundreds of thousands" of domains, selected and reviewed by humans. The logic is that a trusted site tends to link to equally trustworthy content, which in turn links to more trustworthy content. The fewer link "hops" separate a page from that seed set, the higher its Trust Flow.

That's where Majestic's public explanation ends. Jones himself admits, in the same post, that he "won't go into detail about how these sites were initially selected," adding that the exact formula isn't published because, even if it were, nobody could replicate it without crawling at Majestic's scale. In other words, the general principle is documented, but the exact composition of the seed set, the weight given to different link types, and the final mathematical formula remain proprietary information Majestic doesn't share.

Majestic also offers a variant called Topical Trust Flow, which applies the same seed-set-proximity logic but split across more than 800 topic categories. A Topical Trust Flow score in "Health" isn't comparable to a score in "Finance": each scale only makes sense within its own category, a point worth keeping in mind before using this metric to judge a link's topical relevance.

TF and CF are not a Google ranking factor. Majestic says as much in its own Flow Metrics documentation: Google doesn't use these figures to calculate search results, and because these metrics "do not directly influence search engines," the company itself admits that chasing a higher Trust Flow for its own sake has little value. Any claim along the lines of "raise your Trust Flow to rank better" gets the causality backwards: a high TF can accompany a strong link profile, but it isn't something Google consults when deciding rankings.

They're also not a combined authority score, unlike Moz's Domain Authority, Ahrefs's Domain Rating, or Semrush's Authority Score. That split isn't a gap in Majestic's methodology or an unfinished feature, it's a deliberate design choice. Where the other three tools blend link quantity and link quality into a single figure, Majestic outputs two independent numbers precisely so quantity and quality can be checked against each other, something a combined figure hides by definition.

And they don't measure content quality. Neither TF nor CF reads the text on a page, judges whether it's well written, whether it matches search intent, or whether it contains factual errors. Both metrics describe only a URL's position within the link network Majestic has crawled. A page with mediocre content can still post a high Trust Flow if it picks up links from domains near the seed set, just as an excellent article can start out with a low TF simply because it hasn't accumulated links yet.

Majestic's own FAQ (checked on 10.08.2026) explicitly recommends not reading TF and CF in isolation, but calculating the difference or ratio between them: the TF/CF delta, it states, is used by SEOs and domain buyers to try to capture how spammy a link might be. That's precisely where Majestic's methodological edge shows up against tools that only hand over a single authority number: the contrast between TF and CF works as an early-warning system for unnatural link profiles, the kind of pattern this glossary already covers in its article on link profiles.

The logic follows naturally once you know the definitions: if CF sits well above TF, a domain has plenty of links, but few of them come from anywhere near the trusted seed set. That's the typical signature of a profile inflated with generic directory links, private blog networks, or mass low-quality link exchanges. A TF that sits close to CF, on the other hand, suggests that most links, even if there aren't many, come from a trustworthy environment.

Majestic illustrated this with its own case study, published on its blog on 16.12.2013: using the Majestic Million list and a boxplot analysis, the company sorted CF/TF ratios into three bands, green up to 6.58, amber between 6.58 and 9.87, and red above 9.87, and found that average Trust Flow dropped as that ratio climbed. Those specific numbers are best read as a historical 2013 example tied to one particular dataset, not as a fixed threshold still valid today: what has stayed valid is the principle of reading TF against CF rather than looking at either number alone, not the exact figures from that study.

Where TF and CF fall short is when either is read in isolation. A Trust Flow of 30 says little on its own without knowing that domain's Citation Flow, just as a high Citation Flow without Trust Flow context could describe either a domain with genuine authority or one artificially inflated. Any report citing only one of the two numbers, without the other, is showing half of the picture Majestic deliberately designed to be read together.

The most common mistake is treating Trust Flow as interchangeable with Moz's Domain Authority, Ahrefs's Domain Rating, or Semrush's Authority Score. They look alike on the surface, a 0-to-100 scale, a stated goal of estimating how strong a domain is, but they differ on one core design point: the other three tools each output a single figure that combines link quantity and link quality, while Majestic deliberately outputs two separate ones.

That difference isn't a minor technicality. When a tool hands over a single authority number, it has already decided internally how to weigh quantity against quality, and that decision stays hidden inside the formula. Majestic shifts that decision to the user: it delivers both ingredients separately and leaves it to whoever is auditing the link profile to work out the relationship that matters for their specific question.

The second frequent mistake is assuming a high TF or CF is, on its own, a guarantee of good rankings, carrying over the "higher is better" logic that gets loosely applied to DA or DR without checking it. As the previous section shows, neither Majestic figure is designed to predict a Google ranking. Equating "high number" with "good SEO" is exactly the misunderstanding this whole SEO Tools section of the glossary is meant to clear up, one provider and one metric at a time.

Majestic didn't start as a tool for SEO agencies. Per the company's own history page on majestic.com, Alex Chudnovsky launched the Majestic-12 project in the UK in late 2004 with a far bigger goal: building a large-scale search engine of its own to compete with the established players. To get there, the project ran on distributed computing modeled on SETI@home, volunteers around the world installed crawling software on their own machines and jointly contributed to building a web index.

It wasn't until February 2008 that this turned into a commercial product: Majestic SEO launched and put the link index built up by then to a different use, not powering a search engine of its own, but selling backlink data to SEOs. Dixon Jones joined as a development partner in 2009 and helped turn the project into a SaaS business. The company traded as Majestic SEO until 2014, when the SEO suffix dropped away, leaving Majestic.com, though it's still registered as Majestic-12 Ltd on the UK companies register.

Today's core metric, Trust Flow and Citation Flow, is effectively a by-product of an abandoned, or at least shelved, search-engine ambition: the link index that was originally meant to feed a search engine of its own ended up as raw material for an analysis tool instead.

Unlike SISTRIX or SimilarWeb, Majestic hasn't announced or shipped an AI-visibility or GEO product of its own. A review of the company's official blog and majestic.com's product pages turns up no announcement of tracking for ChatGPT, Gemini, Perplexity, or similar chatbots, not in beta, not as a shipped feature. That's a meaningful gap next to two of the other providers covered in this section of the glossary, both of which had already shipped their own AI-visibility products by 2025.

What Majestic offers instead is editorial commentary, not a product: its annual "SEO in 2025" and "SEO in 2026" series on majestic.com collects outside SEO experts' takes on AI search, including whether strong organic rankings automatically translate into visibility inside AI answers. Those pieces are written by invited guest authors, not by Majestic itself, and describe industry trends rather than the company's own product roadmap.

In practice, that means anyone using TF and CF to evaluate link profiles gets no additional read from Majestic today on how those domains perform inside ChatGPT or Gemini responses. Whether and when that changes isn't answerable from the publicly available sources, as of this research on 08/10/2026.

Where TF and CF earn their keep, read together, is as an early-warning system for unnatural link profiles: when Citation Flow sits well above Trust Flow, that points to plenty of links from low-trust sources, directories or link-exchange networks among them. That makes Majestic especially useful before buying a domain or cleaning up a backlink profile, when what matters is link quality, not just volume. The depth of the index also pays off: with data going back to 2006, it lets you trace a link profile further back than most competitors can.

Where Majestic comes up short is anything outside link data. TF and CF say nothing about content quality, technical SEO, or actual Google ranking positions, for that you'd need something like SISTRIX's Visibility Index, which crawls real Google results rather than counting links. Neither figure is much use on its own either, read in isolation, TF or CF alone doesn't say a great deal.

And, as the previous section shows, Majestic currently offers no read on AI search. Anyone wanting to know how a domain performs inside ChatGPT or Gemini answers won't find that at Majestic, and will need to look elsewhere. For pure link analysis, though, Majestic remains one of the longest-running, deepest-reaching tools on the market.