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SEO Term

Trust Flow

Trust Flow is a proprietary metric developed by Majestic SEO that measures the quality and trustworthiness of a website's backlink profile on a scale from 0 to 100. It is calculated based on the proximity of a site's links to a curated seed set of trusted domains.

Understanding Trust Flow

Trust Flow works by tracing the link graph backward from a curated seed set of manually reviewed, highly trusted websites — think major universities, government institutions, and established media organizations. The closer your site is to these seed sites in terms of link hops, the higher your Trust Flow score. A site linked directly from a trusted seed domain scores higher than one that is four link hops removed. The metric is scored from 0 to 100, with most websites falling between 10 and 50.

Majestic pairs Trust Flow with a companion metric called Citation Flow, which measures the raw volume of links pointing to a site regardless of quality. The ratio between Trust Flow and Citation Flow — called the Trust Ratio — is a powerful indicator of link profile health. A site with Citation Flow of 40 and Trust Flow of 35 has a healthy ratio near 1:1, while a site with Citation Flow of 60 and Trust Flow of 10 has an unhealthy profile dominated by low-quality links.

Trust Flow is also available at the topical level through Majestic's Topical Trust Flow feature, which categorizes a site's trust across subject areas like Business, Health, Technology, or Education. This granularity helps identify whether a potential link source is authoritative in your specific industry. A link from a high Trust Flow site in an irrelevant topic category carries less topical relevance than one from a moderate Trust Flow site in your exact niche.

Why Trust Flow Matters

Trust Flow provides a quality-focused lens for evaluating backlinks that raw link counts and Domain Authority alone cannot offer. Two sites may have identical numbers of referring domains, but vastly different Trust Flow scores — the one whose links trace back to reputable sources through shorter paths will typically outperform in rankings. This metric helps SEO practitioners distinguish genuinely authoritative link profiles from those inflated by spam, PBNs, or low-quality directories.

In competitive analysis, Trust Flow reveals the real strength behind competitor rankings. A competitor with a moderate number of high-Trust-Flow backlinks often outranks sites with far more links of lower quality. Identifying these high-trust link sources in your competitor's profile provides a roadmap for your own link-building outreach, focusing effort on the types of authoritative sites that move rankings rather than chasing volume from low-value sources.

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