Anchor text — the clickable words in a hyperlink — communicates to search engines what the linked page is about. A link with the anchor text “technical SEO guide” tells Google that the linked page is relevant to technical SEO. But anchor text optimization has a dual character: in external backlinks, over-optimized anchor text is a Penguin risk factor; in internal links, under-optimized anchor text is a missed relevance opportunity. Understanding both contexts and how they differ is foundational for link strategy.
Anchor Text Types
Exact match: The anchor text exactly matches the target keyword (“technical SEO”). Strong relevance signal, but suspicious in external links when used at high rates.
Partial match: Contains the target keyword among other words (“our technical SEO guide”). Natural-looking while still providing relevance signal.
Branded: The brand name (“Muginai,” “Google Search Console”). Common in natural link profiles. Signals brand authority.
Generic: Non-descriptive phrases (“click here,” “read more,” “this article”). Common in natural editorial links, provides no topical relevance signal but no manipulation risk.
URL: The raw URL used as anchor text (“muginai.com”). Natural in citations and technical references.
Image links: When a linked image has no text, the image’s alt text functions as anchor text.
Phrase-match: Anchor text includes the keyword as part of a longer natural phrase (“to learn more about our technical SEO approach, visit…”).
External Backlink Anchor Text: The Penguin Risk
Google’s Penguin algorithm specifically targets unnatural anchor text distributions in external backlinks. The pattern it targets: sites where a high percentage of external backlinks have exact-match commercial keyword anchor text.
A natural link profile for an SEO tools company might look like:
- 40–50% branded anchors (company name, product name)
- 20–30% URL anchors (plain domain links)
- 10–15% generic anchors (click here, this post, source)
- 5–10% partial match/phrase anchors
- 3–5% exact match keyword anchors
A manipulated profile might have:
- 30% exact match (“best SEO tool”)
- 20% partial match (“affordable SEO tool”)
- 30% branded
- 20% other
The high rate of commercial keyword anchors is the red flag. In an organic link profile, most people who link to you use your brand name or the URL — not carefully chosen keyword phrases matching your target keywords.
Why over-optimized external anchors are dangerous: Google’s Penguin algorithm has been integrated into the core algorithm since 2016, meaning it’s constantly evaluated rather than applied in periodic updates. Sites with manipulative anchor text distributions face ongoing suppression rather than periodic penalties.
You can’t fully control external anchor text. When people link to you naturally, they choose whatever text makes sense in their content. Trying to influence external anchor text toward exact-match keywords at scale is inherently manipulative.
Internal Link Anchor Text: The Missed Opportunity
Internal linking is entirely within your control — and most sites underutilize it. While external anchor text must look natural (limiting keyword optimization), internal anchor text can and should be descriptive and keyword-relevant.
Best practices for internal anchor text:
- Use descriptive, topically relevant anchor text that tells Google what the linked page is about
- Avoid generic anchors (“click here,” “read more”) for internal links — they pass no relevance signal
- Vary anchor text across different pages linking to the same destination (Google sees multiple internal links as signals; each can reinforce relevance with different phrasing)
- Align internal anchor text with the target keyword of the destination page
Example — linking to a page targeting “crawl budget optimization”:
- Good: “crawl budget optimization guide”
- Good: “how to optimize crawl budget”
- Good: “crawl budget management strategies”
- Weak: “read our guide here”
- Weak: “see more”
Internal link context also matters. An in-content link from a relevant paragraph (“see our guide on crawl budget optimization for details”) is more valuable than a footer link or navigation link with the same anchor text. Google weights contextual, in-content links more heavily than navigational links.
Anchor Text in Backlink Audits
When auditing your external backlink profile, anchor text analysis reveals:
Over-optimization risk: Export all external backlinks, group by anchor text, and calculate percentages. A site where more than 10–15% of links use exact-match commercial anchor text may be at Penguin risk.
Manual action diagnosis: If you have an unnatural links manual action, the anchor text distribution of the affected links often reveals what Google flagged.
Competitive benchmarking: Comparing your anchor text distribution against competitors’ natural profiles reveals where your profile looks unusual.
For over-optimized profiles, the remediation options:
- Disavow the links with manipulative anchor text (only if you built them intentionally)
- Acquire new, diverse links to dilute the over-optimized portion of the distribution
- If link building partners are involved, request they vary anchor text away from exact match
Anchor Text and Link Building Strategy
For outreach-based link building, anchor text decisions matter:
- For guest posts you write, use partial-match or branded anchor text — exact match at scale is manipulative
- For links in press coverage, journalists will use whatever text makes sense editorially — don’t request specific anchor text
- For resource page links, branded or URL anchors are natural; a description of what you offer is fine
- For broken link building replacements, the anchor text should match what the replaced content was about
The general principle: let external anchor text reflect natural editorial choices, not SEO optimization targets. Reserve anchor text optimization for internal links where you have full control and no manipulation risk.