What is Anchor Text in SEO?
7 min read
Anchor text is the visible, clickable text inside an HTML hyperlink (<a href="...">Anchor Text</a>) that provides both human readers and search engine crawlers with explicit context about the destination page before they follow the link. Since Sergey Brin and Larry Page’s foundational 1998 Stanford research paper, Google’s ranking algorithm has combined the anchor text of inbound backlinks and internal links with surrounding annotation text (US Patent US7260573B2) as one of the strongest lexical and semantic relevance signals on the web.
<a href="...">Clickable Anchor Text</a>
What is Anchor Text & Why Did Google Build Its Index Around It?
In HTML markup, a hyperlink consists of the anchor element (<a>), the target destination attribute (href), and the clickable label known as the anchor text:
<a href="https://b2bsaasseo.agency/saas-link-building">B2B SaaS link building agency</a>
In Section 2.2 of Google’s original 1998 architectural paper ("The Anatomy of a Large-Scale Hypertextual Web Search Engine"), founders Sergey Brin and Lawrence Page explained why Google treated anchor text differently than earlier search engines: instead of associating anchor text only with the page containing the link, Google associates the anchor text directly with the target page the link points to. As the authors noted, "anchors often provide more accurate descriptions of web pages than the pages themselves."
Complete Taxonomy: The 7 Types of SEO Anchor Text
Every internal and external link on the web falls into one of seven anchor text categories:
| Anchor Text Type | Live Example (Linking to a CRM Page) | SEO Signal Strength & Risk Profile |
|---|---|---|
| 1. Branded Anchor | HubSpot or b2bsaasseo.agency |
Safest & Most Natural. Builds entity authority; should make up 50%+ of external backlinks. |
| 2. Brand + Keyword (Compound) | HubSpot’s enterprise CRM platform |
High Value, Low Risk. Associates your brand entity directly with your product category. |
| 3. Partial-Match / Topical Phrase | guide to scaling B2B customer pipelines |
Ideal for Editorial & Internal Links. Natural semantic variation favored by Google BERT. |
| 4. Exact-Match Anchor | enterprise CRM software |
Powerful for Internal Links; High Risk if Overused in External Backlinks (triggers Google Penguin if unnatural). |
| 5. Naked URL Anchor | https://b2bsaasseo.agency/ |
Natural Citation Signal. Common in footnotes, academic .edu links, and press releases. |
| 6. Image Anchor (Alt Text) | <a href="..."><img alt="CRM pipeline chart"></a> |
Googlebot reads the alt attribute of the linked image as the anchor text. |
| 7. Generic / Empty Anchor | click here, read more, website |
Worst for Internal SEO & ADA Compliance. Passes zero lexical topic signal on its own. |
How Google’s Annotation Text Patent & BERT Score Surrounding Words
What happens when a journalist links to your SaaS research report using the word source or this study? Does that link pass zero topical relevance? No!
Under US Patent US7260573B2 ("Ranking documents based on textual proximity and anchor text") and Google Search Central documentation, Googlebot extracts a window of surrounding text (annotation text), specifically the sentence and heading immediately preceding and following the <a> tag. If a sentence reads: "According to a 2026 B2B SaaS churn study by Sitab Ahamed (view dataset), enterprise net retention rose 14%," Google’s natural language models bind the surrounding context ("2026 B2B SaaS churn study") directly to the linked URL.
B2B SaaS Playbook: Internal Link Anchors vs. External Backlink Anchors
The Golden Rule of Anchor Text Optimization
1. Be Aggressive and Descriptive with Internal Links: Google’s John Mueller has confirmed that you cannot get a Penguin penalty from using descriptive, exact-match, or partial-match anchor text on your own internal links (as long as they are helpful to users). Replace every vague Learn more → button on your site with specific anchors like Explore our HealthTech SEO framework.
2. Maintain Strict Anchor Text Diversity on External Backlinks: When earning external backlinks, never force 20 guest posts to link with the exact same commercial keyword string. Keep external anchors natural, varied, and surrounded by strong topical paragraphs.
3. Avoid Internal Anchor Cannibalization: Never use the exact same anchor text on a blog post to point to two different URLs on your website. Map one primary target anchor cluster to one canonical money page.
Frequently Asked Questions
Does Google still use the "First Link Priority" rule when a page links to the same URL twice?
Early SEO experiments showed that when Page A linked to Page B twice in the HTML source, Google only indexed the anchor text of the first link in the DOM (often a short top navigation menu link). While modern Googlebot uses full-page DOM layout analysis and semantic passages to evaluate in-body contextual links, keeping your primary navigation concise and using rich contextual anchors in the body copy remains best practice.
Why are "Click Here" and "Read More" bad anchor texts for SEO and accessibility?
In SEO, generic phrases like "click here" tell Googlebot nothing about the topic of the target page. In web accessibility (WCAG 2.4.4), blind users often navigate pages by pulling up a list of all links out of context; hearing "Read more, Read more, Read more" 15 times makes the page unusable.
What does Google use as anchor text when an image is linked without any text?
Google Search Central officially documents that when an <img> element is wrapped inside an <a href="..."> tag, Google uses the image’s alt attribute as the anchor text for that link. If the linked image has an empty or missing alt attribute, you lose the anchor text signal.
How long should an ideal contextual anchor text be?
The most effective contextual anchor texts are concise noun phrases between 2 and 6 words long (for example, "B2B SaaS link building playbook" or "301 redirect status code") rather than hyperlinking an entire 25-word sentence.