When should I use rel=nofollow?

Use nofollow when you do not want to treat a link as a normal editorial recommendation. Use sponsored for paid links and ugc for user-generated links.

HTML and internal linking

SEO href: how the HTML A tag helps search engines follow links

Q: Does anchor text affect SEO?

Yes. Anchor text helps users and search engines understand the destination page. It should describe the target naturally instead of repeating exact keywords everywhere.

Q: Should every link have a title attribute?

No. The title attribute does not replace clear visible link text and normally adds little SEO value.

href is the attribute inside an HTML <a> tag that contains the link destination. For SEO, a useful link combines a crawlable href, clear anchor text, a working destination and a logical place in the site structure.

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Key points

What a search engine gets from a link

Destination

The URL in href

A crawler follows the URL in href to discover another page and add it to the site's crawl graph.

Context

The anchor text

Visible link text explains the destination. “Check robots.txt” is more useful than “click here”.

Structure

The linking path

Links from navigation, category pages and related guides help show relationships and important user routes.

What is href in SEO?

<a href="/en/tools/seo-audit/">Run an SEO audit for this page</a>

The href contains the destination URL. The text between the opening and closing tags is the anchor. Search engines can use the href to discover the target page, while people and crawlers use the anchor and surrounding text to understand why the destination matters.

Prefer a normal <a href="…"> link for navigation. A JavaScript click handler on a div may be harder to discover, cannot be opened like a normal link and often creates keyboard-accessibility problems.

href value	Use	SEO check
`/guide/`	Root-relative internal URL	Clear and portable inside the same site.
`https://example.com/guide/`	Absolute URL	Useful when the full origin must be explicit.
`#faq`	Page fragment	Moves to a section; it does not create a separate indexable page.
Missing href	Not a normal link	Add a real destination when the element is used for navigation.

Good and weak anchor text

Example	Quality	Reason
`<a href="/robots/">how to check robots.txt</a>`	Good	The text describes the destination naturally and clearly.
`<a href="/robots/">learn more</a>`	Weak	The destination is unclear without reading the surrounding paragraph.
`<a href="/robots/">robots txt checker robots SEO free tool</a>`	Poor	Keyword stuffing hurts readability and looks manipulative.

Attributes

Link attributes that matter

href — the real destination URL. Normal navigation should use an accessible URL instead of only a JavaScript click handler.
rel="nofollow" — a hint that the link should not be treated as a normal editorial recommendation. It is not needed for standard internal navigation.
rel="sponsored" — use it for paid, affiliate or advertising links.
rel="ugc" — use it for links created by users in comments, forums or profiles.
target="_blank" — opens a new tab. Add rel="noopener" for safer behavior.
title — an optional hint, not a replacement for clear visible anchor text.

Internal links and SEO

An internal link points to another page on the same site. It helps crawlers discover URLs and helps users continue a task. A useful route connects a definition to a guide, a guide to a tool and a tool result to the next practical check.

More links are not automatically better. Link related pages when the destination genuinely helps the reader continue.

External links

An external link is useful when it supports a claim, points to official documentation or gives the reader a necessary resource. A normal editorial link does not need automatic nofollow. Paid and user-generated links should use the appropriate rel value.

Checklist

How to review HTML links

Confirm the link has a real href and works without a fragile JavaScript-only interaction.
Check that the anchor describes the destination instead of saying only “click here”.
Open the target and inspect final HTTP status, redirects and canonical.
Replace or remove links to 404 pages, redirect loops and obsolete URLs.
Make sure important pages are reachable through normal internal navigation.
Use sponsored and ugc where the relationship requires them.

Common mistakes

What makes links harder to use

Generic anchors such as “here” and “more” that make no sense out of context.
A clickable-looking div with no href and poor keyboard access.
Internal links that pass through several redirects instead of pointing to the final URL.
The same exact commercial anchor repeated unnaturally across many pages.
Opening every link in a new tab without a user benefit.
An important page listed in sitemap.xml but not linked from any normal page.

Tools