Glossary · Traffic sources & UTMs
What is referral traffic?
Referral traffic is visits that arrive by clicking a link on another website that isn't a search engine, social network or ad — for example a blog post, directory, forum or partner site that links to you.
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How is referral traffic identified?
When someone clicks a link, the browser usually sends the address of the page they came from in the Referer header (spelled that way in the HTTP spec). The analytics script reads it, extracts the domain and checks it against lists of known search engines and social networks. Whatever isn't on those lists, and isn't your own domain, is a referral.
Since 2020, browsers default to strict-origin-when-cross-origin, which sends only the origin (e.g. https://news.ycombinator.com/) to other sites, not the full URL. So you'll usually know which site referred someone, but not which page on it.
Referral traffic example
A comparison article on an industry blog links to you. Over a month it sends 600 visitors; 42 sign up (7%) and 6 become paying customers. A Product Hunt launch sends 3,000 visitors, 90 sign-ups (3%) and 4 paying customers. The smaller referrer produced more revenue — which is why referral reports are most useful with conversions and revenue next to visits.
Why referral traffic matters
Referrals show who recommends you, which partnerships and PR placements actually send people, and which backlinks earn clicks rather than just SEO value. A referrer with high conversion is a relationship worth investing in.
Common referral traffic pitfalls
- Self-referrals. Visitors returning from your payment provider, auth provider or another domain you own show up as referrals and steal credit. Exclude those domains or track across them.
- Referral spam. Fake referrers sent by bots to get you to visit their site. Bot filtering removes most of it.
- Link wrappers.
t.co(X),lnkd.in(LinkedIn) and email click trackers replace the real referrer with their own domain; good tools map them to the right network. - Lost referrers. Apps,
rel="noreferrer"links and https→http hops strip the referrer, pushing real referrals into direct traffic.
How VisitTrack reports referral traffic
VisitTrack classifies every session's referrer into one of five channels — direct, search, social, AI and referral — and shows the referring domain in the Referrers tab. Known link wrappers are mapped to their network (t.co and lnkd.in count as social), and AI assistants like chatgpt.com, perplexity.ai and claude.ai get their own channel instead of being lumped into referral. With revenue attribution connected, each referrer shows the revenue its visitors produced.
Frequently asked questions
What is the difference between referral and organic traffic?
Organic traffic comes from unpaid search engine results; referral traffic comes from links on other websites that aren't search engines or social networks. Both are unpaid, but they're grown in different ways.
How do I stop my own payment page showing as a referrer?
Add the payment or auth domain to your analytics tool's referral exclusion list, or pass your visitor id through checkout so the returning visit joins the original session's attribution.
Related terms
- ReferrerA referrer is the address of the web page that linked a visitor to the current page, sent by the browser in the HTTP Referer header and exposed to scripts as document.referrer.
- Direct trafficDirect traffic is any visit that arrives with no referrer and no campaign parameters, so the analytics tool can't tell where it came from and files it as "direct" or "(none)".
- Channel groupingChannel grouping is the set of rules an analytics tool uses to sort every visit into a marketing channel — such as direct, organic search, paid search, social, email or referral — based on its referrer, UTM parameters and ad click ids.
- Organic trafficOrganic traffic is visits that come from unpaid search engine results — Google, Bing, DuckDuckGo and others — as opposed to paid search ads, social, referral or direct traffic.
- Revenue attributionRevenue attribution is the practice of connecting each payment to the visitor who made it and the marketing sources — referrer, campaign, landing page — that brought that visitor, so you can see how much money each channel actually produced.
Tools and guides
See which channels actually bring paying customers
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