Types of Backlinks: Complete Guide to Every Link Type (2026)

Understanding Backlink Types#

Not all backlinks are created equal. The type of link you earn affects how much SEO value it provides, how Google interprets it, and how it contributes to your overall link profile.

This guide categorizes every type of backlink you'll encounter, explains how each works, and helps you understand which to prioritize in your link building strategy.

By Link Attribute: Follow vs. Nofollow#

The most fundamental distinction in backlinks is whether they're followed or not.

Dofollow Links#

Dofollow links (the default link type) pass link equity and tell search engines to follow the link and credit the linked page.

Characteristics:

• Pass PageRank and link equity
• Influence rankings directly
• No special attribute required (default behavior)
• What most people mean when they say "backlink"

Examples:

<a href="https://example.com">Link text</a>

When They Occur:

• Editorial mentions in articles
• Natural citations and references
• Most guest post author bios
• Resource page listings

Nofollow Links#

Nofollow links include a rel="nofollow" attribute that historically told search engines not to pass link equity.

Characteristics:

• Originally passed no link equity
• Since 2019, Google treats as a "hint" (may still provide some value)
• Useful for links where editorial endorsement isn't implied
• Still drive referral traffic and brand awareness

Examples:

<a href="https://example.com" rel="nofollow">Link text</a>

When They're Used:

• Blog comments
• Forum posts
• Social media links
• Press releases
• Wikipedia and similar sites

Sponsored Links#

Sponsored links (rel="sponsored") identify paid placements and advertisements.

Characteristics:

• Explicitly marks paid links
• Required by Google for any paid placement
• Prevents passing of traditional link equity
• Maintains compliance with guidelines

Examples:

<a href="https://example.com" rel="sponsored">Sponsored content</a>

When Required:

• Paid guest posts
• Sponsored content
• Paid reviews
• Advertising partnerships

UGC Links#

UGC (User Generated Content) links identify links created by users rather than the site owner.

Characteristics:

• Signals user-created content to Google
• Common on comment systems and forums
• Helps Google understand link context
• Similar treatment to nofollow in practice

Examples:

<a href="https://example.com" rel="ugc">User's link</a>

Where Used:

• Comment sections
• Forums and discussion boards
• User profiles
• User-submitted content

See our full guide on UGC links and the rel="ugc" attribute for implementation details.

By Link Placement#

Where a link appears on a page affects its value.

Contextual Links#

Contextual links appear within the body content of a page, surrounded by relevant text.

Value: Highest

Characteristics:

• Surrounded by topically relevant content
• Appear natural and editorial
• Clicked by actual readers
• Strongly correlated with rankings

Example Context: "For more information on improving your rankings, check out this [link building guide]."

Sidebar Links#

Sidebar links appear in the sidebar area of a website, outside the main content.

Value: Low to Medium

Characteristics:

• Less contextually relevant
• Often appear on multiple pages (approaching sitewide)
• May look like paid placements
• Provide some value but less than contextual

Footer Links#

Footer links appear in the footer section, typically at the bottom of every page.

Value: Low

Characteristics:

• Often sitewide (same link on every page)
• Common placement for paid links (red flag)
• Little contextual relevance
• Historically over-used for manipulation

Author Bio Links#

Links in author bylines at the end of guest posts or contributed articles.

Value: Medium

Characteristics:

• Expected in guest posting context
• Natural when author has relevant expertise
• Should be nofollowed if the post is paid
• One of the most common legitimate link types

Navigation Links#

Links in website navigation menus.

Value: Low for SEO, High for Referral

Characteristics:

• Sitewide appearance
• Little to no SEO value
• Can drive referral traffic if prominent
• Common for partner/sponsor mentions

By Link Source#

The type of website linking to you matters significantly.

Editorial Links#

Editorial links are placed by writers or editors because the linked resource genuinely adds value.

Value: Highest

Characteristics:

• Earned through quality content
• Natural and unsolicited
• Strongly correlate with rankings
• What Google's algorithm is designed to reward

How to Earn:

• Create genuinely valuable content
• Become an industry resource
• Produce original research
• Be quotable and expert

Directory Links#

Directory links come from business directories and industry listings.

Value: Low to Medium (depends on directory quality)

Characteristics:

• Easy to acquire
• Variable quality (from spam to legitimate)
• Valuable for local SEO when relevant
• Diminished value compared to earlier SEO eras

Worth Pursuing:

• Industry-specific directories
• Professional association listings
• Local citation building
• Curated directories (not "submit any site")

Guest Post Links#

Links from articles you've written for other websites.

Value: Medium to High (depends on site quality)

Characteristics:

• Common link building tactic
• Requires quality content creation
• Value depends heavily on host site
• Best when topically relevant

Learn more: Guest blogging

Resource Page Links#

Links from curated resource pages that list useful tools, guides, or references.

Value: Medium to High

Characteristics:

• Actively curated (shows endorsement)
• Often topically focused
• Good targets for outreach
• Legitimate when resource is genuinely useful

Learn more: Resource page link building

Forum and Comment Links#

Links from forum posts, blog comments, or discussion boards.

Value: Low (mostly nofollow)

Characteristics:

• Almost always nofollow
• Easy to create (hence low value)
• Can drive referral traffic
• Should never be primary strategy

Social Media Links#

Links from social media platforms.

Value: Low for direct SEO

Characteristics:

• Typically nofollow
• No direct ranking benefit
• Can drive discovery and indirect links
• Important for content distribution

Press Release Links#

Links within press release distributions.

Value: Low

Characteristics:

• Usually nofollow
• Widely distributed (not unique)
• Historical manipulation has reduced value
• Useful for announcements, not link building

.edu and .gov Links#

Links from educational or government websites.

Value: Medium to High (depends on context)

Characteristics:

• No inherent extra value from domain type
• Often high authority due to trust
• Harder to earn legitimately
• Valuable when contextually relevant

Note: The myth that .edu/.gov links have special weight is false. They're valuable because educational and government sites tend to be authoritative, not because of the domain extension.

By Relationship Type#

The nature of the relationship between linking and linked sites matters.

One-Way Links#

Links pointing to you without you linking back.

Value: Highest

Characteristics:

• Most natural link type
• What Google's algorithm rewards
• Indicates genuine endorsement
• Should comprise most of your profile

Reciprocal Links#

Reciprocal links where two sites link to each other.

Value: Low to Medium

Characteristics:

• Natural in small amounts
• Problematic at scale (link scheme)
• Common between related sites
• Should be minority of link profile

Three-Way Link Exchanges#

Three-way exchanges where Site A links to Site B, Site B links to Site C, and Site C links to Site A.

Value: None (link scheme)

Characteristics:

• Explicitly a link scheme
• Detectable patterns
• Violates Google guidelines
• Not worth pursuing

By Link Location Target#

Where the link points on your site affects its value and use.

Homepage Links#

Links pointing to your site's homepage.

Characteristics:

• Natural in brand mentions
• Good for overall authority
• Unnatural if percentage is too high
• People naturally link to specific content

Deep Links#

Deep links point to internal pages rather than the homepage.

Characteristics:

• More natural distribution
• Target specific content
• Help specific pages rank
• What organic linking looks like

Healthy Profile:

• 20-40% homepage links
• 60-80% deep links
• Varies by site type

By Acquisition Method#

How you get links affects their perception and value.

Earned/Natural Links#

Links acquired through quality content without direct outreach.

Value: Highest

Characteristics:

• Completely organic
• Editorial decision by linker
• Hardest to scale
• What algorithms are designed to reward

Outreach-Based Links#

Links acquired through outreach, pitching, or relationship building.

Value: Medium to High

Characteristics:

• Proactive acquisition
• Still requires quality content
• Scalable with resources
• Legitimate when offering genuine value

Built Links#

Links you create yourself (profiles, directories, comments).

Value: Low

Characteristics:

• Easy to acquire
• Little editorial endorsement
• Often nofollow
• Supplementary at best

Purchased Links#

Links acquired through direct payment.

Value: None (against guidelines)

Characteristics:

• Explicitly against Google guidelines
• Must be marked as sponsored
• Risk manual actions
• Not recommended

Specialty Link Types#

Broken Link Opportunities#

Links from broken link building where you've offered content to replace dead links.

Value: Medium to High

A legitimate outreach strategy—you're helping the site fix a problem while earning a link.

Niche Edits / Link Insertions#

Niche edits or link insertions add links to existing content.

Value: Medium (when legitimate)

When Legitimate:

• Editor genuinely finds your resource valuable
• Content is updated for relevance
• Link adds value for readers

When Problematic:

• Pure transactional insertion
• No contextual relevance
• Paid without disclosure

Skyscraper Links#

Links earned through the skyscraper technique—creating superior content to what's already linked.

Value: Medium to High

Characteristics:

• Requires creating best-in-class content
• Outreach to people linking to inferior content
• Success varies widely
• Works best with significantly better content

HARO Links#

Links earned through responding to journalist queries on HARO/Connectively.

Value: High

Characteristics:

• Often from major publications
• Editorial placement
• Requires genuine expertise
• Competitive but worthwhile

Citation Links#

Citation building creates consistent NAP (Name, Address, Phone) listings across directories.

Value: Medium (for local SEO)

Characteristics:

• Critical for local businesses
• Requires NAP consistency
• Multiple directories needed
• Local ranking factor

Link Value Quick Reference#

| Link Type | SEO Value | Difficulty | Risk | |-----------|-----------|------------|------| | Editorial contextual | Very High | High | None | | HARO/media | Very High | Medium | None | | Guest post (quality site) | High | Medium | Low | | Resource page | Medium-High | Medium | Low | | Niche edit (legitimate) | Medium | Medium | Low | | Directory (quality) | Medium | Low | Low | | Forum/comment | Low | Very Low | Low | | PBN | None | Low | Very High | | Purchased | None | Very Low | Very High |

Building a Healthy Link Profile#

A natural link profile includes diverse link types:

Ideal Distribution:

• Majority: Editorial and earned contextual links
• Significant: Guest posts, resource pages, HARO
• Some: Quality directories, author bios
• Few: Forum profiles, comment links
• None: PBNs, paid links, link schemes

Red Flags:

• Too many exact-match anchor text links
• High percentage from single source type
• Sudden spikes in link acquisition
• Links from unrelated topics/languages

Frequently Asked Questions#

Which type of backlink is most valuable?#

Editorial links from relevant, authoritative sites within your content niche. These indicate genuine endorsement and carry the most weight with search engines.

Are nofollow links worthless?#

No. Since Google changed nofollow to a "hint" in 2019, some value may pass. Beyond SEO, nofollow links drive traffic, brand awareness, and can lead to follow links over time.

Should I build different link types deliberately?#

Focus on earning quality editorial links and let type diversity happen naturally. Deliberately manipulating your link type distribution can look artificial.

How do I know what types of links I have?#

Use tools like Ahrefs, Moz, or SEMrush to analyze your link profile. They'll show referring domains, link attributes, and placement context.

Is it better to have more link types or more links?#

Quality and relevance matter more than either count or diversity. A smaller number of highly relevant editorial links beats thousands of low-quality varied links.

Applying This Knowledge#

Understanding link types helps you:

1. Prioritize tactics that earn higher-value link types
2. Audit your profile for unhealthy patterns
3. Set realistic goals based on what different links provide
4. Avoid wasted effort on low-value link types

For detailed strategies on earning the most valuable link types, explore our link building strategies guide or learn about effective link building tactics.