What is a Backlink in SEO? Definition and use

James Brunetto

Co-founder & CMO

Last update:

September 26, 2025

Backlinks are the lifeblood of SEO. Understand what they are, what they are for, and how to get good ones. We explain it to you bluntly.

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If the SEO (Search Engine Optimization) interests you, you have surely come across the term “backlink”. But what is a backlink and why is it essential for your natural referencing strategy ? A backlink, or backlink, is a link from an external site pointing to yours.

These relationships are essential because they influence how google and other search engines perceive the popularity and authority of your site. They act as votes of confidence from other sites, showing that your content is valuable and worthy of ranking high in the search results. Mastering backlinks and their use can significantly improve your visibility online and the authority of your domain. An important aspect of backlink optimization is the SEO netlinking, which consists in developing a network of strategic and quality incoming links.

In the next sections, we'll cover the definition, the types of backlinks, their role in SEO, and how to acquire quality backlinks to transform your online presence.

Understanding backlinks: Definition and types

Definition of a backlink

One Backlink, also known under the terms of inbound link or Backlink, represents a hyperlink on a website leading to a page on another site. These links are seen as recommendations for landing pages, and search engines, led by Google, see them as votes of confidence. In summary, a backlink is a hypertext link that facilitates navigation between web pages, creating an essential reference network for online research.

Each backlink is considered to be a mark of quality and relevance to the content of the target page.

Different types of backlinks

Backlinks vary widely, and this diversity plays a key role in a successful SEO strategy. Among the main types are:

  • Editorial links (Organic Backlinks): Naturally placed by authors who believe in the value of your content, they are highly secure and recommended by Google.
  • Guest post links: Obtained by writing guest articles on other sites, they provide quality links in exchange for relevant content.
  • Reciprocal links: Links exchanged between two sites. This method should be used sparingly to avoid penalties.
  • UGC (User-Generated Content) links: Based on user-generated content, such as comments and social media, they strengthen your brand's reputation.
  • Business listing links: Created by registering your business in directories, useful for improving your local visibility and credibility.
  • Links to webinars, videos, and podcasts: Earned by participating in these formats, they position themselves as experts in your field.
  • Links by attribute: Includes dofollow/nofollow, UGC, and sponsored links, each with their own benefits for your SEO.

Each type of backlink has specific advantages and must be integrated strategically into your SEO approach to maximize its impact.

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The importance of backlinks for SEO

Improving the credibility and authority of the site

Backlinks are essential to improve the credibility and authority of a website. When recognized sites link to your content, they signal to search engines that your site is reliable and trustworthy. These links serve as validations of the quality and relevance of your content, thus strengthening your reputation among users and search algorithms.

The quality of backlinks is essential, as links from reputable sources have a much greater impact than links from lower-quality sites. For example, a link from a renowned publication or an academic site can significantly increase the credibility of your site. These backlinks also strengthen thedomain authority, a decisive factor for Google's search algorithms.

Domain authority assesses the overall trust and credibility of a website, and high-quality backlinks are essential to strengthen it. The more quality backlinks a site accumulates, the more it is perceived as an authority in its field, which improves its positioning in search results.

Influence on the ranking of pages in search results

Backlinks directly influence the ranking of pages in search results. Google and other search engines consider the quantity and quality of backlinks to assess the relevance and authority of a page.

A page with a lot of quality backlinks has a better chance of ranking well in the search results. Algorithms see these links as votes of confidence, suggesting that the content is relevant and useful. A good internal networking is also essential because it allows search engines to better understand the structure of your site and the organization of your content, which can also positively influence the ranking of your pages.

Studies have shown that pages with the most quality backlinks tend to rank higher. For example, a Backlinko search identified the number of links pointing to a site as the main ranking factor on Google.

Increase in referral traffic

In addition to their impact on rankings, backlinks also generate referrer traffic. This traffic happens when users click on links from other sites, bringing them to your site, increasing your overall traffic and potentially your engagement and conversions. This type of traffic is especially valuable because it comes from trusted sources and often consists of qualified users who are ready to engage with your content.

Backlinks also help in the discovery and indexing of new content by search engine robots, speeding up the indexing process and improving the visibility of your website in search results.

Effective strategies to acquire backlinks

Creating quality content

La creating high quality content is essential for attracting natural backlinks. If your content is informative, useful, and well-written, it's likely to be shared and referenced by other sites. Content formats that are particularly attracting attention include The infographics, free downloads such as white papers or case studies, and product comparisons. Infographics are particularly effective because they present information in a visual and easy to digest way, encouraging sharing and integration into other articles, which generates a constant flow of backlinks. In addition, interviews with experts in your sector can increase the visibility of your site and attract a wider audience, generating quality backlinks when this content is shared.

Guest blogging and collaborations

The Guest blogging and collaborations with other bloggers or businesses are very effective methods to get backlinks. By writing a guest post for another blog, you can often include a link to your site, allowing you to reach a new audience and get a quality backlink. Collaborations can also be a way to exchange backlinks with other businesses and influencers. By building strong relationships, you can create content that is beneficial to both parties and get links from reputable sites. It is important to aim for sites with a strong domain authority and relevance for your niche, because the links from these sites are more influential and can significantly improve your SEO.

Use of backlink verification tools and analyses

The employment ofbacklink checking and analysis tools is essential for refining your netlinking strategy. Platforms like SEMrush, Ahrefs, and LinkMiner help you monitor your backlinks, identify low-quality links, and analyze the backlink profiles of your competitors. SEMrush, for example, offers advanced features for backlink analysis, making it possible to identify low-quality links and to understand the overall impact of your backlinks. LinkMiner offers the possibility to filter the links according to several criteria and to follow the lost links that you want to recover. By exploiting these tools, you can refine your analyses, discover untapped backlink opportunities, and optimize your netlinking strategy for improved results.

Common mistakes to avoid with backlinks

A poorly executed backlink strategy can damage the SEO of your site instead of improving it. Here are the most common mistakes to avoid:

1 ️ Buy poor quality backlinks
Buying cheap links from link farms or irrelevant sites may result in a Google penalty. Always favour natural and quality relationships.

2 ️ Getting too many links in a short time
A massive and sudden acquisition of backlinks can be suspicious in the eyes of search engines. Progressive, organic growth is more effective.

3 ️ ※ Do not diversify backlink sources
Limiting yourself to a single type of backlink (e.g. only guest blogging links) may seem artificial. It is preferable to have a varied profile including editorial links, forums, media, etc.

4 ️ Ignore toxic backlinks
Some links from dubious sites or sites penalized by Google can damage your SEO. uses Google Search Console or Ahrefs to detect them and disavow the problem areas.

5 ️ Do not optimize the anchor of links
The anchor of the link (the clickable text) must be natural and varied to avoid over-optimization. Too many links with the same anchors are likely to be considered spam by Google.

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The future of backlinks in SEO: trends and developments

With the evolution of Google algorithms, the way in which backlinks influence SEO is gradually changing. Here are some trends to watch in 2025 and beyond:

📌 The increased importance of quality over quantity
Google continues to reinforce the importance of links from authoritative sites. A single link from a recognized site will be more valuable than dozens of links from low-quality sites.

📌 Artificial intelligence and the detection of artificial links
With the rise of AI, Google is becoming more and more effective in detecting artificial or unnatural backlinks. Strategies based on manipulating links will therefore become even riskier.

📌 The rise of unlinked brand mentions (Linkless Mentions)
Google is able to associate brand mentions without a direct backlink to the authority of a site. Having a strong presence on the web via quotations in articles, forums or social networks can therefore play a role similar to traditional backlinks.

📌 The growing role of backlinks from social networks
Although links from Facebook, Twitter, LinkedIn or Instagram are often “nofollow”, their indirect impact on the visibility and reputation of a site is growing. Sharing attractive content to generate natural backlinks is becoming an essential approach.

📌 Local SEO and geolocated backlinks
With the growing importance of local search, backlinks from local sites (regional blogs, specialized directories, local press) are becoming major ranking factors, especially for businesses with a physical presence.

4 essential steps to launch a successful backlink strategy

You want to boost your SEO and strengthen the authority of your site thanks to Backlinks ? An effective strategy of Netlinking cannot be improvised: it is based on a structured and methodical approach. Here it is The 4 key steps to get quality backlinks and improve your positioning on search engines.

1. Define strategic keywords to maximize the impact of backlinks

A strategy of effective backlinks Start with a careful selection of keywords on which you want to position yourself. The objective is to adapt your approach according to the maturity level of your audience:

Discovery phase : target general keywords to attract a large audience (e.g.: “marketing budget”, “editorial strategy”, “buyer persona”).
Assessment phase : opt for more specific keywords linked to specific solutions (e.g.: “marketing automation tool”, “inbound marketing software”).
Purchase phase : rely on more intentional queries, often associated with product comparisons (e.g.: “review [brand]”, “alternative to [solution]”).

By defining these priority keywords, you will be able to identify sites and potential partners that are positioned on these themes and that could generate backlinks to your site.

2. Optimize your content and pages to attract quality backlinks

One Effective backlink is a link to a relevant and optimized page. Before you even try to acquire inbound links, make sure that your pages are technically and semantically solid.

🔹 Technical optimization :

  • Clean and readable HTML structure
  • Responsive design for smooth navigation
  • Optimized load time
  • Well-informed metadata (title tags, meta description, image alt tags)

🔹 Content Optimization :

  • High quality and up-to-date content
  • Natural integration of defined keywords
  • Structuring in Hn (H1, H2, H3...) for better readability
  • Add engaging elements (infographics, case studies, videos)

Why is it important?
A site well structured and a content relevant increase the chances of being cited by other sites. The more useful and engaging your content is, the more it will be shared and will naturally generate backlinks.

3. Identify and prioritize content to be valued through backlinks

Not all content is the same SEO potential. To maximize your results, you should prioritize which pages to reinforce with backlinks. Here are the 4 criteria to take into account :

Traffic potential : analyze the search volume of the keywords targeted via Ahrefs, SEMrush, or Google Search Console.
Number of backlinks required : identify how many links are required to outperform your competitors and reach Google's top 3.
Your page's current ranking : follow its positioning to see if it is close to the top results.
Budget allocated to backlinks : buying links on sites with high authority can be an option, but care must be taken to maintain an ethical and qualitative approach.

Example of a winning strategy :
If your page is in 2nd or 3rd page from Google on a strategic keyword, analyze the competition and define a specific objective. If a competitor has 100 backlinks And that you have 80, aim 40 additional backlinks to exceed the critical threshold and obtain better visibility.

4. Track, analyze and optimize your backlink profile

A strategy of Backlinks does not end with the acquisition. Constant monitoring is essential to measure the impact of your actions and identify opportunities for improvement.

What should you watch out for?
✅ The number of backlinks won or lost
✅ The authority of the sites that mention you
✅ The anchors used (diversity and naturalness)
✅ The presence of toxic relationships to disavow

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How to effectively track your backlinks?

Monitoring and analyzing your backlinks are essential to adjust your netlinking strategy and maximize your SEO impact. To do this, various specialized tools make it possible to measure, monitor and optimize your inbound link profile. Here is a selection of the best solutions to effectively manage your backlinks:

1. Google Search Console — The free backlink tracking database

Why use it?
Google Search Console is a free tool offered by Google that allows you to get an initial view of your backlinks. It shows you which sites link to yours, which pages receive the most links and helps you to detect possible problems related to your netlinking.

Key features:

  • List of backlinks referenced by Google
  • Analysis of the link anchors used
  • Detecting indexing errors or broken links
  • Identifying the sites that link to your domain the most

Great for?
SEO newbies or those who want a free solution to track their backlinks without third-party tools.

2. Ahrefs — The reference tool for backlink analysis

Why use it?
Ahrefs is one of the most powerful tools on the market for analyzing backlinks in detail. It has a huge database and offers leading indicators to measure the quality and impact of each link.

Key features:

  • Access to one of the most comprehensive backlink databases
  • Domain Rating (DR) score to assess the authority of a site
  • Identifying lost links and recovery opportunities
  • Analysis of your competitors' links to refine your strategy
  • Monitoring the evolution of your backlink profile

Great for?
SEO professionals or companies looking for detailed and advanced monitoring of their netlinking.

3. SEMrush — An all-in-one solution for netlinking and competitive analysis

Why use it?
SEMrush is a complete platform that allows you to analyze not only your backlinks, but also those of your competitors. It offers insights on the authority of the referring domains and makes it possible to identify link opportunities.

Key features:

  • Comparative analysis with your competitors
  • Detecting toxic relationships and suggestions for disavowing them
  • Identifying recent backlinks and lost links
  • In-depth studies on link anchors

Great for?
SEO marketers and digital agencies who want a global approach including netlinking, on-page SEO and competitive analysis.

4. Majestic SEO — The tool specialized in backlink authority

Why use it?
Majestic SEO is a platform dedicated to netlinking that makes it possible to assess the quality of backlinks with its two proprietary indices: Trust Flow (TF) and Citation Flow (CF).

Key features:

  • Measuring the quality and influence of relationships
  • Analysis of competitor link profiles
  • Exploring backlinks by theme
  • Link mapping to visualize the structure of your netlinking

Great for?
SEO experts and those who want to go further in evaluating the quality of backlinks.

5. Moz Pro — An SEO tool with a focus on backlinks

Why use it?
Moz Pro offers a powerful link explorer that allows you to obtain a global vision of the backlink profile of a site. It includes a Domain Authority score that is often used in netlinking strategies.

Key features:

  • Link Explorer: tool dedicated to backlink analysis
  • Domain Authority (DA) score to assess the credibility of a site
  • Tracking new backlinks and deleted links
  • Anchor and link distribution analysis

Great for?
Companies and SEO professionals who want an accessible tool with accurate analyses on the quality of links.

6. Backlinks Monitor — Real-time monitoring of earned and lost links

Why use it?
Monitor Backlinks is an intuitive and automated tool that sends alerts in case of gain or loss of backlinks, allowing quick reactivity to optimize your netlinking profile.

Key features:

  • Automatic alerts on new and lost backlinks
  • Detecting toxic links that are harmful to your SEO
  • Dofollow and nofollow backlink tracking
  • Analysis of competitor backlinks

Great for?
Freelancers and VSEs/SMEs who want a simple and effective follow-up of their backlinks.

7. Linkody — A tool for monitoring and managing backlinks

Why use it?
Linkody is a solution specialized in monitoring and optimizing backlinks. It allows you to receive notifications on changes and to perform an in-depth netlinking audit.

Key features:

  • Real-time backlink tracking
  • Notifications when links are removed or added
  • Domain Authority (DA) analysis of referring sites
  • Toxic link disavow feature

Great for?
SEO managers and web agencies looking for an effective tool to manage and optimize their netlinking strategy.

8. BuzzSumo — Identifying content that generates backlinks

Why use it?
BuzzSumo is not a backlink tool strictly speaking, but it allows you to analyze the content that generates the most inbound links. It is therefore valuable for finding netlinking opportunities.

Key features:

  • Identifying the most shared and linked items
  • Detecting influencers sharing similar content
  • Searching for viral content to generate backlinks
  • SEO and marketing trend analysis

Great for?
Content marketers and SEO managers looking to produce content with high backlink potential.

Conclusion

In summary, backlinks are essentials to any SEO strategy that is intended to be effective. They tell search engines the credibility, authority, and reliability of your site, helping to improve your positioning in search results.

It is important to note that the The quality of backlinks is more important than their quantity. Links from recognized and relevant sites have a major impact on your domain authority and your visibility on the Internet. To take full advantage of backlinks, focus on creating quality content, participate in guest blogging and collaborations, and use backlink analysis tools to refine your strategy.

Never forget that the diversity and relevance of your backlinks are key to building a robust backlink profile. It's time to act: implement these strategies now to boost your online presence, increase organic traffic, and improve your search engine rankings. Consider collaborating with a Webflow agency professional if you need to create a site that is optimized for SEO and designed to generate quality traffic.

FAQS

What are the different types of backlinks and how can they impact my SEO?

There are several types of backlinks, each of which has a unique impact on the SEO of your site. Les editorial backlinks are organic and are found naturally in quality content. Les Guest posting backlinks are acquired by writing articles for other sites. Les image backlinks occur when other sites use your images and mention your site as a source. Les Dofollow backlinks pass link equity and improve your SEO, while Nofollow backlinks do not pass link equity but can still generate traffic. Les sponsored backlinks are paid and often identified as such, and User Generated Content (UGC) backlinks can be found in comments, forums, etc. These backlinks can improve the credibility and authority of your site, facilitate the rapid indexing of new content, increase referral traffic, and strengthen the relevance and context of your keywords.

How to earn backlinks in a natural and ethical way?

To acquire backlinks in a natural and ethical way, it is essential to create high quality content that brings real value to your audience. The technique of Skyscraper consists in improving the existing content of your competitors to attract quality links. Produce in-depth blog posts, case studies, or engaging infographics that meet the needs of your target audience.

Promote this content on social media to increase its visibility and encourage sharing. Establish authentic partnerships with high-authority sites in your sector by offering unpaid collaborations, such as invited contributions or content co-creations. Finally, it is essential to monitor and evaluate your backlinks regularly to avoid low-quality or artificial links.

What is the difference between “follow” and “nofollow” links in SEO?

The main difference between links “Follow” and “Nofollow” in SEO is their impact on the ranking of pages in search results. Follow links allow search engines to follow the link and transfer “link juice” or SEO value from the source page to the targeted page, thus improving its ranking. Conversely, “nofollow” links include an HTML attribute (rel="nofollow”) that tells search engines not to follow the link and not to transfer SEO value. Although these links do not directly contribute to improving the ranking of the targeted page, they can still generate traffic and visibility.

How do I remove poor quality backlinks that point to my site?

To eliminate poor quality backlinks, start with collect and analyze your backlink data using tools like Ahrefs, Google Search Console, or Majestic. Identify links that are irrelevant or come from sites that are low in authority or that are considered to be spam.

Contact the webmasters of these sites to request the removal of these links. If that doesn't work, use Google's disavow tool via Search Console to flag these links as unsolicited or spam, allowing Google to ignore them.

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