What is link

Last updated: April 1, 2026

Quick Answer: A link is a hypertext reference that connects one web page or digital document to another, allowing users to navigate between content by clicking. Links are fundamental to how the internet and websites function.

Key Facts

Overview

A link, formally known as a hyperlink, is a connection between web pages or digital documents that enables users to navigate from one location to another. Links are fundamental to the structure and functionality of the internet, allowing users to move between related content with a single click.

How Links Work

Links are implemented in HTML using anchor tags with an href (hypertext reference) attribute that contains the URL destination. When a user clicks a link, their browser loads the page specified in the href attribute. Links can point to other websites (external links), different pages on the same website (internal links), or specific sections within a page (anchor links). The basic HTML structure is <a href="URL">Link Text</a>, where the text between the tags appears to the user as clickable content.

Types of Links

Links are categorized into several types based on their destination. Internal links connect pages within the same website, helping users navigate site structure and distributing page authority. External links point to content on other websites, providing references and context. Backlinks are incoming links from external sites to your content, which significantly impact search engine rankings and website authority. Anchor links point to specific sections within a page, improving user navigation within long documents.

Links and Search Engine Optimization

Links play a critical role in SEO. Search engines like Google use links as signals of authority and relevance. Websites with more quality backlinks from reputable sources typically rank higher in search results. Link anchor text (the visible text of the link) provides context about the destination content, helping search engines understand page topics. Both the quantity and quality of links matter; links from authoritative, relevant websites carry more weight than those from low-quality sources.

Link Attributes and Behavior

Links can have various attributes that control their behavior. The "target" attribute can open links in new tabs (target="_blank") or within the same window. The "rel" attribute specifies relationships, such as "nofollow" to tell search engines not to pass authority through a link. Links can also have CSS styling to change appearance, and hover effects to provide visual feedback when users interact with them.

Related Questions

What is the difference between internal and external links?

Internal links connect pages within the same website and help distribute authority and establish site structure. External links point to pages on different websites and provide references while helping search engines understand your content's context and relevance.

What is a backlink?

A backlink is a link from one website to another website. When your website is linked to by other sites (especially high-authority sites), it's considered a backlink to your site. Backlinks are important for SEO as they signal credibility and authority to search engines.

How do backlinks affect SEO ranking?

Backlinks act as 'votes' for your website's authority and relevance. Websites with more quality backlinks from reputable, relevant sources typically rank higher in search results. Search engines view backlinks as evidence that other sites trust and recommend your content.

How do broken links affect SEO?

Broken links harm user experience and SEO by preventing users from reaching intended content and signaling poor site maintenance to search engines. Both internal broken links and dead outbound links can reduce crawl efficiency and negatively impact search rankings.

What does 'nofollow' mean in a link?

A nofollow link has the rel="nofollow" attribute, which tells search engines not to pass authority or credit through that link. Publishers use nofollow for user-generated content, paid links, and content they don't want to endorse, preventing manipulation of search rankings.

What is anchor text?

Anchor text is the visible, clickable text of a hyperlink. Good anchor text is descriptive and indicates what users will find when they click the link. Search engines use anchor text to understand the content of the linked page, making it important for both SEO and user experience.

Sources

  1. Wikipedia - Hyperlink CC-BY-SA-3.0
  2. MDN Web Docs - HTML Anchor Element CC-BY-SA-2.5
  3. Google Search Central - Links and Ranking Fair Use