If you have been doing SEO for any amount of time, you already know backlinks matter. But here is what most people miss: a backlink is not just a backlink. The type of link you earn, how it was placed, what attribute it carries, and where it lives on the page all affect how much value it passes.
I have built backlink profiles for dozens of sites, and the single biggest mistake I see is treating every link as equal. A footer link from a random blog and an editorial mention in a top-tier publication are both technically backlinks. But one of them will do almost nothing, while the other can move rankings in weeks.
This guide breaks down every major type of backlink, what makes each one valuable or risky, and how to use them together in a strategy that actually works.
Quick Summary
There are three main ways to classify backlinks: by how you build them (editorial, guest post, niche edit, HARO, etc.), by their HTML attribute (dofollow, nofollow, sponsored, ugc), and by where they sit on a page (in-text, image, footer, widget). Not all of them help your rankings. This guide covers every type you need to know, which ones to pursue, and which ones to stay away from.
Why Backlinks Still Matter (And Why Type Matters More Than Count)
Backlinks are one of the top three ranking signals Google uses. Every time a credible site links to yours, it is essentially vouching for your content. The more genuine vouches you collect, the more authority your pages carry in search.
But here is the thing: Google has gotten extremely good at reading context. It knows whether a link was editorially placed because the content was genuinely good, or whether it was bought, exchanged, or stuffed into a blog comment. Chasing the wrong types of links does not just waste your time. It can actively hurt you.
To understand the full picture of why backlinks are important for rankings, read our dedicated guide. For now, let us dig into the types.
Backlink Types by Link Building Process
This is the most useful way to classify backlinks for anyone building a strategy. Each type below corresponds to a specific tactic or acquisition method.
1. Editorial Backlinks
Editorial backlinks are the gold standard. These are links that another site gives you on its own, because your content was genuinely useful enough to reference. No outreach. No payment. No deal. A journalist cites your research, a blogger links to your infographic, a university resource page points to your guide.
These links are nearly impossible to fake, which is exactly why Google trusts them most. The only way to earn them is to publish content that is original, data-driven, or genuinely better than what is already out there. Think studies, survey reports, in-depth guides, and tools.
2. Guest Post Backlinks
You write an article for another site in your niche, and in return, you get a contextual link back to your own site. Guest posting is one of the most common link building tactics in SEO, and it still works when done right.
The key is relevance and quality. Contributing a genuinely useful piece to a site your audience actually reads is very different from mass-submitting thin content to any blog that will take you. Google has specifically warned against large-scale, low-quality guest posting for link purposes. So focus on fewer, better placements.
You can explore a guest posting service if you want vetted placements without doing all the outreach yourself.
3. Digital PR Backlinks
Digital PR backlinks come from media coverage. When you publish something newsworthy, a study with original data, a new product launch, a viral campaign, news sites and industry publications will often cover it and link back to your site.
These links tend to come from high-authority domains, which makes them extremely valuable for SEO. They also build brand awareness as a bonus. The catch is that the story has to actually be interesting. A press release announcing a new office location will not earn you mentions in major publications.
4. HARO / Journalist Response Backlinks
Platforms like Help a Reporter Out (HARO), Qwoted, and Help a B2B Writer connect journalists with expert sources. When you respond to a query and get quoted, the journalist typically links back to your site alongside the quote.
The backlinks you earn this way often come from well-known media outlets, which makes them some of the most powerful links available. Response quality is everything here. A vague, generic answer will be ignored. A short, specific, data-backed quote will get used.
5. Link Insertions (Niche Edits)
A link insertion, also called a niche edit or curated backlink, is when your link gets added to an existing published article on another site. You reach out to a site owner, explain how your page adds value to one of their existing posts, and ask them to include a link.
These links sit inside established content that already has age and authority, which is often a good sign. Our link insertion service handles this process with vetted publishers if you want to scale without doing cold outreach yourself.
6. Broken Link Building
This is a classic white-hat tactic. You find dead links on other websites, create content that replaces what the original link pointed to, and then contact the site owner to suggest swapping the broken link for yours. It works because you are doing the webmaster a favor while earning a link at the same time. The hard part is finding enough worthwhile opportunities at scale.
7. UGC Backlinks (Forums, Communities, Q&A)
These are links placed in user-generated content such as forum posts, Reddit threads, Quora answers, or blog comments. Most platforms automatically tag these with rel=”ugc” to signal they are user-placed, not editorial. They rarely move rankings on their own, but they can drive relevant traffic when placed in highly-visited discussions. Use them sparingly and only where your link genuinely adds to the conversation.
8. Business Listing / Directory Backlinks
Listing your business on Google Business Profile, Yelp, Clutch, Crunchbase, and similar directories creates backlinks and reinforces your NAP (name, address, phone) consistency. These are particularly important for local SEO. The links themselves are not usually strong ranking signals on their own, but they verify your business is real and help you show up in local searches. Stick to authoritative, niche-relevant directories and skip the bulk-submission spam services.
9. .edu and .gov Backlinks
Links from university and government domains carry a strong authority signal. They are hard to earn, but tactics like scholarship pages, resource listings, and contributing to .edu publications can get you there. You can also look at our buy edu backlinks service for vetted .edu placements.
10. Resource Page Backlinks
Many sites publish “useful links” or “recommended resources” pages for their niche. Getting listed on a relevant, well-maintained resource page gives you a contextual link that is trusted because the page owner curated it. Reach out with a clear pitch explaining exactly what your resource offers and why it belongs on their list.
11. Badge Backlinks
If you run an awards program or recognition list in your niche, you can create embeddable digital badges that winning sites display on their pages, with a link back to yours. These scale well because recipients promote the badge themselves. This tactic works especially well for review sites, SaaS tools, and industry ranking sites.
12. PBN Backlinks
A Private Blog Network is a group of websites controlled by a single person or team, built specifically to link to a “money site.” PBNs are considered a gray-to-black hat technique and violate Google’s guidelines. While they can produce short-term ranking gains, the risks are serious: if Google detects the network, your entire site can be penalized or deindexed. We cover the full risk picture in our link building strategies guide.
Backlink Types by HTML Attribute
Every link carries an HTML attribute that tells search engines how to treat it. This is separate from how the link was built. A guest post link can be nofollow. A directory link can be dofollow. The attribute controls whether the link passes authority and gets followed by Google’s crawler.
| Attribute | What It Does | SEO Value |
|---|---|---|
| Dofollow (default) | Google follows the link and passes link authority (PageRank) to the target page | High |
| rel=”nofollow” | Tells Google not to follow or treat the link as an endorsement | Indirect |
| rel=”sponsored” | Marks the link as a paid placement. Required for any purchased or incentivized link | None for rankings |
| rel=”ugc” | Marks user-generated content like comments and forum posts. Reduces spam risk | Minimal |
Dofollow Backlinks
Dofollow is the default state of every link. There is no rel=”dofollow” tag in code. It is just a standard hyperlink. When Google crawls a dofollow link, it follows the path and passes authority to the linked page. These are the links SEOs typically chase because they have the most direct impact on rankings. That said, a profile made up entirely of dofollow links can look suspicious since real, natural link profiles always contain a mix.
Nofollow Backlinks
Google introduced the nofollow tag in 2005 to fight link spam. A nofollow link technically does not pass PageRank, but it still has value. It drives referral traffic, contributes to brand awareness, and helps keep your backlink profile looking natural. Most social media links, press releases, and comment links are nofollow. Do not ignore them just because they are not dofollow.
Sponsored Backlinks
If you pay for a link or incentivize it in any way, that link needs the rel=”sponsored” attribute. This is Google’s preferred tag for paid placements, replacing the old practice of marking them nofollow. Failing to tag paid links correctly is a link scheme violation and can trigger a manual penalty. Sponsored links do not pass link juice, but they can still bring direct traffic to your site.
UGC Backlinks
Sites that allow user-submitted content, blog comments, forum posts, reviews, apply the rel=”ugc” tag to links inside that content. This signals to Google that the link was user-placed, not editorially added by the site owner. These links carry minimal SEO weight, but they are still useful for engagement and referral traffic when placed in active communities.
Backlink Types by Position on the Page
Where a link sits on a page affects how much weight it carries. Google reads context, and a link surrounded by relevant body text signals something very different from a link buried in the footer.
In-Text (Contextual) Backlinks
A link placed inside the body text of an article, surrounded by relevant content, is the most valuable position. Google can read the surrounding text as context for what the link is about. The anchor text, plus the sentences around it, helps the algorithm understand the relevance of both pages. These are what you are aiming for in editorial, guest post, and niche edit campaigns.
Image Backlinks
When an image is used as a hyperlink, or when a site embeds your graphic and credits you with a link, that is an image backlink. These carry less weight than text links because images do not have the same contextual cues that anchor text and surrounding body copy provide. If you use images as links, always include descriptive alt text so Google can understand what the link is pointing to.
Footer Backlinks
Footer links appear at the bottom of every page on a site. They used to be a popular SEO tactic because a single placement got you a sitewide link count across hundreds of pages. Google now gives footer links much less weight, and sitewide footer links are often flagged as unnatural. The most legitimate use is crediting an agency or developer for their work on a site. Avoid pursuing footer links as a strategy.
Widget Backlinks
Widgets are embeddable mini-apps that site owners paste onto their pages. If your widget code includes a hidden or keyword-rich link back to your site, that is a link scheme violation. Google has explicitly called this out. If your widget links back to you as a visible credit, that is fine, but add rel=”nofollow” to make it compliant. Never use widgets as a way to manufacture hidden links.
Backlink Types to Avoid
Some links do not just fail to help you. They actively hurt your site. Here is what to stay away from.
Bought Dofollow Links
Paying for a dofollow link without adding the sponsored tag is a direct violation of Google’s link spam policies. Google’s systems are very good at detecting paid link patterns. Getting caught means a manual penalty and lost rankings. Our guide on how to check backlink quality will help you spot risky links in your own profile.
Mass Reciprocal Link Exchanges
Swapping links with other sites in bulk (“link to me and I’ll link to you”) is listed by Google as a link scheme. A handful of natural cross-links between genuinely related sites is fine. A spreadsheet-managed link swap program is not.
Spammy Comment and Forum Links
Dropping links in every comment section or forum thread you can find is not link building. It is noise. Google ignores most of them. Automated tools that do this at scale are an even bigger risk since they are an explicit guideline violation.
Low-Quality Article Directories
Submitting articles to hundreds of generic article directories for links is an outdated tactic. Google has long targeted these sites, and the links you get carry no real authority. Worse, having too many from low-quality sources can make your profile look spammy.
Auto-Generated Links
Using bots or automated software to create links across forums, profiles, and comment sections is a direct Google guideline violation. Even if the links are nofollow, the pattern looks unnatural and can draw a penalty.
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Browse the MarketplaceHow to Build a Strong Backlink Profile
A healthy backlink profile is not about having the most links. It is about having the right mix of link types, from varied sources, with a range of attributes that reflect natural link acquisition patterns. Check our link building checklist for a practical step-by-step approach.
Here is what that looks like in practice.
Focus on contextual dofollow links as your core. In-text editorial and guest post links from relevant sites should make up the majority of your link building effort. These pass the most authority and look the most natural.
Round out the profile with supporting link types. Business listings, relevant directories, HARO mentions, podcast appearances, and resource page links all add diversity without risk.
Do not ignore nofollow links entirely. A profile with 100% dofollow links looks manufactured. Natural sites pick up nofollow links from social media, news coverage, and press references all the time.
Audit your existing links regularly. Your link building metrics tell you whether your profile is improving or gaining spammy links you need to disavow. Use tools like Ahrefs or Google Search Console to keep tabs on new and lost links.
For more detail on the strategic side of acquiring high authority backlinks and what separates a strong profile from a weak one, see our link building packages.
What Makes a Backlink Actually Valuable
| Factor | Why It Matters |
|---|---|
| Authority of linking domain | A link from a trusted, high-DR site passes more value than one from a new or low-quality domain |
| Topical relevance | Links from sites in your niche carry more authority signal than off-topic placements |
| Link attribute (dofollow) | Only dofollow links pass PageRank. Nofollow and ugc links do not count toward authority directly |
| Page position | In-text contextual links outperform footer, sidebar, and widget links |
| Anchor text | Descriptive anchor text helps Google understand what the linked page is about |
| Editorial context | Naturally earned links outperform paid or exchanged placements in how Google interprets them |
