What is a hyperlink?
A hyperlink, usually just a link, is a piece of a document that points somewhere else. Click it and you go there. In HTML it is an anchor element with an address, and the words inside it are the anchor text, the part the reader sees. The idea predates the web by decades, but the web turned it into the structure of the whole thing: pages exist, and links are how anyone, human or machine, gets from one to another.
Links come in kinds. Internal links point to other pages on the same site; external links point to other sites. Navigation links sit in menus and footers; contextual links sit inside the writing. Jump links move the reader within a page. Links can be text, images or buttons, and they can open an email client, dial a phone number or download a file. Each can carry attributes that tell browsers and search engines how to treat it, such as opening in a new tab or declaring that the link is sponsored or was added by a user.
For search engines a link is two things at once: a path a crawler follows to discover pages, and a vote that passes authority from one page to another. The words in the anchor text tell the engine what the destination is about.
Why it matters
Why hyperlinks matter
Links are navigation, discovery, authority and persuasion in one small element. For readers they are how a site is used; a page without clear links is a dead end. For search engines they are how pages are found and how importance is judged, which is why a page nobody links to tends not to rank and why the links a brand earns from other sites are among the most valuable things it owns online.
For accessibility they are essential. People who use screen readers often navigate by jumping from link to link, hearing only the anchor text, so a page full of links that say click here is unusable to them. And for marketing, every call to action is a link, every email button is a link and every campaign is measured by what happens after a link is clicked. A broken one is a lost customer and a small signal of neglect.
In practice
How hyperlinks work in practice
- 01
Good links are written, not just inserted. The anchor text describes the destination, so a reader knows where they are going before they click and a search engine knows what the page is about. Internal links are placed with intent, connecting related pages so readers and crawlers find them, and the most important pages get the most links from inside the site. External links point to sources worth citing, and attributes are set honestly: sponsored where money changed hands, nofollow where the site does not vouch for the destination.
- 02
Links are styled so they can be seen, with a consistent color or underline and a visible focus state for keyboard users, and they are large enough to tap on a phone. Campaign links carry tracking parameters so their traffic can be attributed. Broken links are checked regularly, because pages move and sites close. By default a link opens in the same tab and lets the reader decide; forcing new tabs is reserved for cases where leaving the page would lose their work.
Watch out
What people get wrong about hyperlinks
Anchor text that says click here or read more, which tells readers and search engines nothing. Linking so often that nothing stands out, or so rarely that the site is a set of islands. Linking out generously and never linking inward, so the site's own pages are orphaned. Setting nofollow on everything out of caution, which wastes the authority internal links are supposed to pass. Opening every link in a new tab, which fills a visitor's browser with windows and breaks the back button. And forgetting that a link on a phone is pressed with a thumb, not a cursor, so it needs room.
The deeper mistake is treating links as plumbing. They are editorial decisions about what a page connects to, and a site whose links are chosen with care reads as one that knows its subject.
