Link Building Metrics for Better SEO Results
Jun 27,2026
By SEO ANALYSER
Link building
Learn which link building metrics matter for SEO results, how to read them and which to prioritise when judging backlink quality.
Short answer
Key takeaway
Learn which link building metrics matter for SEO results, how to read them and which to prioritise when judging backlink quality.
Referring domains vs total
Referring domains vs total backlinks
Total backlinks count every link. Referring domains count the number of unique websites linking to you. Unique referring domains usually matter more because they show how widely your site is being recognised across different sources.
A site can have 900 backlinks from one supplier footer and still have a weak profile. Another site may have 140 backlinks from 62 relevant domains and carry more SEO value. The second profile is harder to dismiss because the signal comes from many separate sources.
Track referring domains as a trend, not only as a single number. If a site moves from 95 to 112 referring domains over three months, that is a 17.9% increase. If backlinks rise from 600 to 1,400 in the same period but referring domains only move from 95 to 98, the growth may be coming from repeated sitewide links rather than broader authority.
| Pattern | What it may mean | How to report it |
|---|---|---|
| High backlink count, low domain count | Authority is concentrated in too few places. | Flag as link concentration risk. |
| Steady referring domain growth | The site is gaining broader recognition. | Report as positive authority diversity. |
| Backlink spike without domain growth | Likely repeated links from the same source. | Check whether those links are sitewide or duplicated. |
| Sudden referring domain drop | Lost links, page removals, migrations, or tracking changes. | Review lost domains and affected landing pages. |
For AU-specific placement ideas, see Australian backlinks.
Anchor text distribution
Anchor text distribution
Anchor text distribution shows the mix of clickable words used in backlinks pointing to your website. This metric matters because a natural profile rarely uses the same commercial keyword again and again.
A healthy anchor text profile usually contains mostly branded anchors, naked URLs, generic anchors, and varied partial-match phrases. Exact-match anchors can exist, but they should not dominate the profile. If 45% of your anchors use the same money keyword, that is a pattern worth investigating.
For example, a natural profile for a business called Harbour Legal might include anchors such as “Harbour Legal”, “harbourlegal.com.au”, “this legal guide”, “family law advice”, and only a small number of exact phrases such as “family lawyer Sydney”. If 30 out of 50 new links use the same exact phrase, the risk is in the repeated pattern.
| Anchor type | Example | Healthy reporting range |
|---|---|---|
| Branded | SEO Analyser | Often 40% to 70% of a mature profile. |
| Naked URL | seoanalyser.ai | Often 10% to 30%. |
| Generic | read more, visit the site, this guide | Often 5% to 20%. |
| Partial match | SEO reporting guide | Often 5% to 15%. |
| Exact match | link building metrics | Usually safer below 5% to 10%. |
Red flag: if a small website gains 25 backlinks in one month and 18 use the exact same target keyword, the anchor profile may look engineered even if each individual link seems harmless.
Screen prospects against the worst backlinks patterns before you accept a placement.
Traffic and engagement from
Traffic and engagement from referred links
Backlink KPIs should include more than link count and authority score. A backlink that sends engaged visitors can have business value even when its authority score is moderate. A high-authority link that sends no traffic and has weak topical context may be less useful than it looks.
In Google Analytics, check referral sessions, engaged sessions, average engagement time, key events, and conversions. For example, a niche industry directory might send only 85 visits in a month, but if 14 of those visitors complete an enquiry form, that link source deserves attention.
Compare that with a broad media link that sends 1,200 visits but produces a 92% bounce rate, 11 engaged sessions, and zero enquiries. The second link may still have awareness value, but your report should not treat it as a stronger SEO outcome just because the session count is higher.
| Referral metric | What it shows | Example interpretation |
|---|---|---|
| Referral sessions | How much traffic a linking source sends. | 300 visits can be useful only if the traffic is relevant. |
| Engagement rate | Whether visitors interact after landing. | 65% engagement suggests stronger audience fit. |
| Average engagement time | How long referred visitors stay active. | Two minutes may be strong for a service page. |
| Conversions | Whether referral traffic creates leads or sales. | Eight enquiries from one source is a business signal, not just an SEO signal. |
Link velocity
Link velocity
Link velocity measures how quickly your backlink profile grows or shrinks. Natural growth depends on the size of the site, brand activity, industry, and content visibility. The number alone is not the issue. The pattern is what matters.
A local service business gaining 3 to 7 new referring domains per month may be showing healthy, realistic growth. The same business gaining 260 backlinks in four days from unrelated international blogs would deserve a closer review.
Losses matter too. If referring domains fall from 180 to 145 after a site migration, the issue may not be backlink quality. It may be broken redirects, removed pages, or old URLs that no longer resolve. Reporting link velocity helps you spot these problems before rankings decline.
| Velocity pattern | Possible meaning | Reporting action |
|---|---|---|
| 3 to 10 new domains per month | Normal growth for many smaller sites. | Track as a steady trend. |
| Large spike from relevant sources | May reflect brand visibility or strong content exposure. | Check source relevance before marking it risky. |
| Large spike from unrelated domains | Possible spam or low-quality link growth. | Audit anchors, domains, and linked pages. |
| Sudden drop in referring domains | Lost links, deleted pages, or technical changes. | Review lost domains and reclaimable URLs. |
Scenario: if referring domains rise from 120 to 126, then 133, then 139 across three months, the trend looks stable. If they jump from 139 to 390 in one week with repeated exact-match anchors, the report should flag risk.
Tools for tracking these
Tools for tracking these metrics
No single tool captures every backlink, so use tools together rather than treating one export as the full truth. One platform may show 700 backlinks while another shows 1,100 because each crawler has different coverage.
Use SEO Analyser or another backlink platform to monitor new links, lost links, referring domains, anchor distribution, and toxic link signals. Use Google Search Console to check the linking domains Google reports. Use Google Analytics to measure referral engagement and conversion behaviour.
| Tool | Best use | Backlink KPI to track |
|---|---|---|
| SEO Analyser | Backlink monitoring, toxic link checks, and referring domain trends. | New links, lost links, domain quality, and risk signals. |
| Google Search Console | Checking which sites and pages Google reports as linking to you. | Top linking sites and top linked pages. |
| Google Analytics | Measuring the quality of referral traffic. | Sessions, engagement rate, key events, and conversions. |
| Ahrefs or Semrush | Comparing authority, anchors, lost links, and competitor gaps. | Referring domain growth, anchor mix, and link velocity. |
| Majestic | Checking Trust Flow and Citation Flow. | Quality versus volume balance. |
A useful monthly report does not need hundreds of rows. For most teams, 8 to 12 backlink KPIs are enough: new referring domains, lost referring domains, total backlinks, authority ranges, anchor mix, referral sessions, engaged sessions, conversions, and any unusual velocity changes.
Recommended reading: if your metrics reveal risky backlink patterns, read How to Build Backlinks Safely in 2026 before making changes.
SEO Analyser
Where Website Audit fits link measurement
SEO Analyser includes a module named Website Audit. Use it to confirm that pages earning new links are crawlable, indexable, and free of technical blockers that waste referral equity.
Frequently asked questions
FAQs
What are link building metrics?
Link building metrics are the numbers used to measure backlink quality, growth, relevance, risk, and performance. They include referring domains, authority scores, anchor text distribution, referral traffic, engagement, and link velocity.
Which backlink KPI matters most?
Referring domains are often more useful than total backlink count because they show how many unique websites link to you. A site with 80 relevant referring domains can be stronger than one with 1,000 backlinks from only 10 domains.
Is Domain Authority a Google ranking factor?
No. Domain Authority and Domain Rating are third-party metrics. They are useful for comparison, but they are not Google ranking factors and should be checked alongside relevance, traffic quality, and link diversity.
How often should backlink KPIs be reviewed?
Monthly tracking is usually enough for most websites. Review new referring domains, lost domains, anchor text changes, referral traffic, and link velocity so you can spot both growth and risk early.
Why is anchor text distribution important?
Anchor text distribution helps you see whether backlinks look natural. A healthy profile usually has mostly branded, URL, generic, and partial-match anchors. Too many exact-match anchors can create over-optimisation risk.
Summary
Link building metrics are useful only when they explain quality, diversity, relevance, engagement, and risk together. Total backlinks alone can mislead your SEO report.
Track authority scores, referring domains, anchor text distribution, referral engagement, and link velocity as one system. That gives you a clearer view of whether your backlink profile is getting stronger or simply getting larger.
References
Sources and further reading
- SEO Analyserauthority score
- SEO Analyserworst backlinks
- SEO Analyseradvanced link building
- SEO AnalyserAustralian backlinks
- SEO AnalyserHow to Build Backlinks Safely in 2026
