Every backlink on the internet is built from the same handful of HTML parts.
Once you can read those parts, you can look at any link and know exactly what it does for SEO.
This post breaks down the anchor tag, the rel attribute, and anchor text, and shows what dofollow, nofollow, sponsored, and UGC links actually mean in 2026.
What Are the Parts That Make Up a Backlink?
A backlink is one piece of HTML with four parts that matter for SEO.
<a href=”https://greenleaf-ayurveda.in/panchakarma-treatment” rel=”nofollow” target=”_blank”> Panchakarma Treatment in Kerala </a> |
Part | In the Code Above | What It Does |
<a> tag | <a …>…</a> | The anchor element. Every hyperlink starts and ends with this |
href attribute | href=”https://greenleaf…” | The destination URL. The page receiving the backlink |
rel attribute | rel=”nofollow” | The instruction to Google about how to treat this link |
Anchor text | Panchakarma Treatment in Kerala | The visible clickable words. Google reads this to understand the linked page |
target attribute | target=”_blank” | Opens in a new tab. A user experience choice, not an SEO signal |
The rel attribute is where most of the SEO decisions live, and that is what the rest of this post focuses on.
What Is a Dofollow Link and Why Is It the Most Valuable Type?
Here is a fact that surprises most beginners. There is no such thing as rel=”dofollow” in real HTML.
Dofollow is an SEO industry term, not an HTML standard. It simply describes a plain link with no rel attribute at all. When Google finds nothing telling it to hold back, it follows the link and passes PageRank.
<!– DOFOLLOW LINK: no rel attribute at all –> <a href=”https://greenleaf-ayurveda.in/panchakarma-treatment”> Panchakarma Treatment in Kerala </a> |
A dofollow link passes full link equity to the page it points to, which makes it a genuine vote of trust. Editorial mentions, guest posts, and resource page links are usually dofollow by default.
A healthy link profile carries roughly 85 to 90 percent dofollow links, with the rest split across nofollow and other attributes. Most editorial links from real news sites and blogs are already dofollow, so this ratio tends to happen naturally when the links are earned rather than manufactured.
What Is a Nofollow Link and Does It Still Carry SEO Value?
Google introduced rel=”nofollow” in 2005 to fight comment spam. It tells Google: I am linking to this page, but I am not vouching for it.
<!– NOFOLLOW LINK: Google treats this as a hint, not a command –> <a href=”https://brightsmile-dubai.com/teeth-whitening” rel=”nofollow”> Best Teeth Whitening Dubai </a> |
In September 2019, Google announced it would treat nofollow, sponsored, and UGC as hints rather than hard rules. That means Google may still choose to follow and weigh a nofollow link if its systems judge it trustworthy and relevant. In 2026 that hints model is still exactly how Google processes these attributes.
So nofollow links are not worthless. A nofollow link from a busy site still sends real visitors. It still builds brand awareness. It keeps a link profile from looking suspiciously perfect, since a link profile that is 100 percent dofollow is itself a red flag. And a nofollow mention today can lead a journalist to add a genuine dofollow link later.
What Is a Sponsored Link and When Does Google Require rel=”sponsored”?
Google introduced rel=”sponsored” in September 2019, built specifically for paid links: advertisements, sponsored posts, and paid partnerships.
<!– SPONSORED LINK: use for any paid placement –> <a href=”https://brightsmile-dubai.com/dental-implants” rel=”sponsored”> Dental Implants Dubai </a> |
Important: Google’s spam policies require any link acquired through payment, product exchange, or a commercial arrangement to carry rel=”sponsored” or rel=”nofollow”. Leaving a paid link as plain dofollow is a policy violation that can trigger a manual action against both sites involved. |
What Is a UGC Link and Where Do These Links Usually Come From?
UGC stands for user-generated content. Google introduced rel=”ugc” in 2019 for links created by platform users rather than by a site’s own editorial team.
<!– UGC LINK: added automatically by most CMS and forum platforms –> <a href=”https://greenleaf-ayurveda.in/back-pain-treatment” rel=”ugc”> Ayurvedic Back Pain Treatment </a> |
Blog comments, Reddit posts, Quora answers, forum replies, and community review platforms are the most common sources. WordPress has added rel=”ugc” automatically to comment links since 2019.
UGC links carry low direct SEO value on their own. But Reddit and Quora threads now appear constantly across Google’s results and AI-generated answers, so the indirect value of genuine activity on these platforms has grown well beyond what the rel attribute alone suggests.
How Should an Affiliate Link Be Tagged According to Google’s Guidelines?
An affiliate link carries a tracking code and pays the linking site a commission when someone clicks and buys.
Because that is a commercial arrangement, Google requires affiliate links to carry rel=”sponsored”, with rel=”nofollow” accepted as an alternative.
<!– AFFILIATE LINK: note the tracking parameters –> <a href=”https://brightsmile-dubai.com/?ref=healthblog” rel=”sponsored”> Book Your Dental Consultation </a> |
Can Multiple rel Attributes Be Combined on a Single Link?
Yes. Google officially accepts combined rel values on one link.
Combination | When to Use It | Passes Equity? |
rel=”nofollow” | General untrusted or user links | No |
rel=”sponsored” | Paid links, ads, sponsored posts | No |
rel=”ugc” | Comments, forums, community content | No |
rel=”nofollow ugc” | User content, wider crawler compatibility | No |
rel=”nofollow sponsored” | Paid link, maximum safety declaration | No |
No rel attribute | A natural editorial dofollow link | Yes |
What Is Anchor Text and Why Does Google Read It So Closely?
Anchor text is the visible, clickable words inside a link. In the code below, the anchor text is everything between the opening and closing <a> tags.
<a href=”https://greenleaf-ayurveda.in/ayurvedic-treatment”> Ayurvedic Treatment in Kerala </a> |
Google reads anchor text as a relevance signal. If dozens of different sites all link to a page using similar wording, Google takes that as a strong hint about what the page covers.
The danger sits on the other side of that same signal. When every single link uses the same keyword phrase, it stops looking like genuine editorial behaviour and starts looking manufactured. Google’s Penguin system, now folded into the core algorithm, was built specifically to catch that pattern.
What Are the Seven Types of Anchor Text a Website Can Earn?
Every backlink you earn will fall into one of these categories.
Type | Example | SEO Strength |
Exact match | Ayurvedic Treatment in Trivandrum | High, but risky if overused |
Partial match | Trivandrum Ayurveda clinic for back pain | High, and safer than exact match |
Branded | Green Leaf Ayurveda | Medium, builds brand recognition |
Naked URL | greenleaf-ayurveda.in | Medium, reads as very natural |
Generic | click here, read more | Low, but common and harmless |
Topical / related terms | traditional Kerala healing, Kizhi therapy | Medium, builds topical relevance |
Image alt text | alt text on a linked image | Medium, if the alt text is relevant |
What Is a Safe Anchor Text Distribution in 2026?
The safe range has tightened since the early days of link building, and it is worth knowing the current numbers rather than the older, looser advice still floating around.
Anchor Type | Safe Share in 2026 |
Branded | 35 to 50 percent, the largest share by a clear margin |
Partial match / topical | 15 to 25 percent |
Generic | 10 to 20 percent |
Naked URL | 5 to 15 percent |
Exact match | 1 to 10 percent, and the lower end is safer |
An Ahrefs analysis of 384,000 pages found that the average exact-match share among genuinely top-ranking pages sits close to zero. Pages did not reach page one by stuffing anchor text with keywords. They reached it through a naturally varied profile that grew from real editorial links.
Treat 10 percent exact match as a hard ceiling, not a target to aim for.
What Do Most Beginners Get Wrong About Link Attributes and Anchor Text?
Believing nofollow links are worthless
I still meet marketers who ignore any link that is not dofollow. Since 2019, that is an outdated view. A nofollow mention from a genuinely authoritative site can carry more real weight than a dofollow link from a spam blog.
Leaving paid links as plain dofollow
This is the mistake most likely to trigger a manual penalty. If money, product, or any commercial arrangement changed hands, the link needs rel=”sponsored” or rel=”nofollow”, with no exceptions.
Requesting exact-match anchor text from every link
I have reviewed link profiles across Kerala and the Gulf where an agency requested the same exact-match phrase from every single outreach email. It is the fastest way to build a profile that reads as manufactured to Google’s systems.
How Should a Website Decide Which rel Attribute to Use on a Link?
I teach a simple sequence inside Organic Growth Mastery, and it works for outbound links on any site.
First, ask whether money or any commercial value changed hands. If yes, the link needs rel=”sponsored” or rel=”nofollow”. There is no judgment call here, it is a requirement.
Second, ask whether the link came from a platform user rather than an editor. Comments, forum posts, and reviews should carry rel=”ugc”.
Third, if neither applies and the link is a genuine editorial choice, leave it as a plain link with no rel attribute at all.
Fourth, when suggesting anchor text to someone linking to your own site, suggest branded or natural phrasing. Never hand a journalist an exact-match keyword to insert word for word.
Frequently Asked Questions
Q: What is the difference between a dofollow link and a nofollow link?
A: A dofollow link has no rel attribute and passes full link equity to the page it points to. A nofollow link carries rel=”nofollow”, which tells Google not to pass ranking credit, though Google has treated it as a hint rather than a strict rule since 2019.
Q: Does a nofollow link still pass any SEO value in 2026?
A: A nofollow link does not officially pass PageRank, but it still sends real referral traffic, builds brand awareness, and keeps a backlink profile looking natural. Google may also weigh a nofollow link from a highly trusted site as a hint during ranking.
Q: When is a website required to use rel=”sponsored” on an outbound link?
A: A website must use rel=”sponsored”, or alternatively rel=”nofollow”, on any link that exists because of payment, a product exchange, or another commercial arrangement. This includes sponsored posts, banner ads, and affiliate links.
Q: What is the safe percentage of exact-match anchor text in a backlink profile?
A: A safe exact-match anchor text share sits between 1 and 10 percent of a site’s total backlink profile, and studies of genuinely top-ranking pages show the real average is closer to zero. Branded anchor text should make up the largest single share, typically 35 to 50 percent.
Q: Can a single link have more than one rel attribute at the same time?
A: Yes. Google accepts combined rel values on one link, such as rel=”nofollow ugc” for user-generated content or rel=”nofollow sponsored” for a paid link, and these combinations improve compatibility with older crawlers.
Q: What anchor text should be used for affiliate links?
A: Affiliate links should use natural, branded, or generic anchor text such as a product name or a phrase like check the price, rather than an exact-match keyword, since affiliate links must already carry rel=”sponsored” and do not pass ranking credit regardless of the anchor text used.
Final Thoughts
- Every backlink is built from an anchor tag, a destination URL, an optional rel attribute, and anchor text.
- Dofollow simply means no rel attribute at all, and it is what passes real link equity.
- Nofollow, sponsored, and UGC have all been treated as hints since 2019, not hard rules.
- Any paid or commercial link must carry rel=”sponsored” or rel=”nofollow”, with no exceptions.
- Anchor text is one of Google’s clearest relevance signals, and also one of its clearest spam signals.
- Keep exact-match anchor text under 10 percent, and treat that as a ceiling, not a goal.
- Branded anchor text should make up the largest share of any healthy backlink profile.
- A natural, varied profile protects a site far better than any single rel attribute or anchor type.
About the Author Prasad Karthik is an SEO trainer, consultant, and Generative Engine Optimisation (GEO) strategist based in Trivandrum, Kerala, India. He is the founder of Organic Growth Mastery, an advanced AI-first, content-led SEO course built for serious practitioners. With hands-on experience working with businesses across Kerala and the Middle East, Prasad bridges the gap between SEO strategy and real-world execution. He is one of the few SEO educators in India actively training marketers in Generative Engine Optimisation: the discipline of making content visible inside AI-generated answers on Google, ChatGPT, Perplexity, and beyond. |
If you want to go deeper on this, I cover the full system inside Organic Growth Mastery, my advanced AI-first SEO course.
