Competitor backlink analysis: how to find every link your rivals have (and win them)

Why competitor backlinks are your best link building shortcut

Link building is one of the most time-consuming activities in SEO, largely because most link prospecting starts cold: searching for relevant sites, finding contact details, and pitching something to an editor who has never heard of you. Competitor backlink analysis short-circuits this process by replacing cold prospecting with warm targeting.

A site that links to your competitor has already done several things: it has decided the topic is relevant to its audience, it has decided a third-party site deserves a reference, and it has demonstrated a willingness to link outward to resources in your niche. When you identify these sites through a competitor backlink analysis, your outreach starts with a significant advantage over cold prospecting. The referring domain is a qualified prospect, not a random target.

The second reason competitor backlinks matter is that they explain authority. Domain authority does not accumulate uniformly. A competitor may rank above you on specific queries not because their content is better, but because 10 to 20 high-authority domains in your niche link to them and not to you. Identifying those links tells you exactly which relationships and link-earning activities are moving the needle in your market. That information is more actionable than any generic link-building advice.

The full SEO competitor analysis guide covers backlink analysis as one of six competitive intelligence dimensions, alongside keyword gaps, content auditing, and rank monitoring. This guide goes deeper into the backlink layer specifically: how to extract competitor link data, run a gap analysis, and build an outreach pipeline from the findings.

How to find competitor backlinks

The most thorough backlink data comes from Ahrefs, which maintains the largest crawled backlink index of any SEO platform. Enter the competitor domain into Site Explorer and open the Backlinks report. The default view shows all backlinks pointing to the domain, including the referring page URL, the anchor text used in the link, the domain rating of the referring site, and whether the link is dofollow or nofollow.

Filter the report to show dofollow links only. Nofollow links do not pass ranking authority to the linked site, so they are lower priority for link-building purposes. Sort the remaining links by domain rating of the referring site, highest first. This surfaces the most authoritative links at the top of the list and allows you to quickly identify where a competitor's strongest authority signals come from.

Work through the top 30 referring domains and categorise each one by link type. Common categories include editorial links from industry publications and news sites, resource page links where a third-party site lists recommended tools or guides, directory links from niche-relevant databases, and citation links where a journalist or blogger quoted the competitor as a source. Each type requires a different outreach approach, so categorising upfront saves time when you move into the campaign stage.

In Semrush, the equivalent data is in the Backlink Analytics section. Enter the competitor domain, go to the Backlinks tab, and filter by Active links and Follow type. Semrush's Authority Score provides a similar quality signal to Ahrefs' Domain Rating. The choice between the two platforms for backlink research comes down to personal preference and which one you already use for keyword work. Both provide sufficient data for a thorough competitor backlink analysis.

Look beyond individual pages to referring domain patterns. A competitor may have earned links from multiple pages within a single high-authority domain. For example, five articles on the same industry publication all link to the same competitor resource. This tells you that publication is an active link source in your niche and that building a relationship with it could yield multiple links, not just one. Identify these multi-link referring domains and prioritise them in your outreach planning.

Backlink gap analysis

A backlink gap analysis takes competitor link data one step further by identifying the specific domains linking to rivals but not to your site. This is the most direct route to a targeted link-building prospect list.

In Ahrefs, the tool for this is Link Intersect, found under the More dropdown in the top navigation within Site Explorer. Enter your domain and up to ten competitor domains. Ahrefs returns a list of referring domains sorted by the number of competitors each domain links to. Sites at the top of the list link to multiple competitors but not to you. These are your highest-priority prospects because they have demonstrated consistent willingness to link to sites in your niche.

In Semrush, the equivalent feature is the Backlink Gap tool in the Link Building section of the left menu. The interface is slightly different but the output is comparable: a list of referring domains ranked by the number of competitors they link to, with your domain absent from each one. Export this list as a CSV and add it to your link-building tracker alongside the link type, the specific pages they linked to for each competitor, and a column for your outreach notes.

Before moving to outreach, verify each prospect manually. Some referring domains on the gap list will be irrelevant to your niche, have low editorial standards, or link broadly to every site in a space regardless of quality. Remove these from your outreach list. The goal is not to match competitor backlink counts but to earn links from domains that carry genuine authority in your niche and send a strong relevance signal to Google.

For organising your outreach pipeline, Notion works well as a tracker where each referring domain becomes a card with status, contact details, and the content angle you plan to pitch. Google Drive suits teams that want a shared spreadsheet with consistent column formatting for tracking at scale. For finding the email addresses and LinkedIn profiles of editors and publishers at each target domain, Apollo is the most efficient option, with direct contact data for journalists, bloggers, and content managers across most industries.

How to earn competitor backlinks

Identifying the domains that link to your competitors is only the first step. Earning those links requires understanding why they linked to your competitor and presenting a compelling reason to link to you instead, or as well.

For editorial links from industry publications and news sites, the most reliable approach is original research or data. If a competitor earned a link because a publication cited a survey they conducted or a dataset they published, you need a comparable or more compelling piece of original content to earn the same type of link. This means producing research, surveys, proprietary data, or analysis that a journalist or editor would find worth referencing. Generic how-to guides do not earn editorial links. Specific, citable data does.

For resource page links, the approach is more direct. A resource page links to external tools and guides in a specific category. Your pitch to the resource page owner is straightforward: you have a relevant resource that fits the page's criteria and adds value to their readers. Study the existing resources they link to, confirm your content is genuinely comparable or better, and reach out with a specific, brief pitch that names the resource page and explains what you are suggesting they add. Response rates on resource page outreach are higher than most other link-building methods because the value exchange is transparent.

For citation links, the entry point is expertise and visibility. If a journalist cited your competitor because they were quoted in a press release or because they publish regular industry commentary, becoming a cited source requires building the same kind of visibility: responding to journalist queries via platforms like HARO or Qwoted, publishing commentary on industry developments, and being consistently reachable as an expert source. This is a longer-term strategy but produces some of the highest-authority links available.

For directory links, the process is administrative. Most niche directories have a submission process. If a competitor appears in a directory you are not listed in, submit your site. Verify that the directory is genuinely relevant and has some editorial standard: directories that list every submitted site regardless of quality carry little to no link authority.

Keep all outreach communication brief and specific. Editors and publishers receive many link-request emails. A pitch that references the specific page on their site, explains what you are suggesting, and includes one sentence on why it is relevant to their readers performs better than a generic template. Use Canva for any visual assets you include in outreach materials, particularly for research-led content where a well-presented infographic or data graphic increases the chance of publication.

Toxic backlinks: what to watch for

Competitor backlink analysis sometimes reveals that a rival's authority rests heavily on low-quality or manipulative links. This information is strategically useful: a competitor whose rankings depend on links that Google's algorithms are likely to devalue is more vulnerable to future ranking drops than their current position suggests.

Signs of a low-quality backlink profile include a high proportion of links from private blog networks, a large number of links with exact-match commercial anchor text, many links from sites with no organic traffic of their own, and a sudden spike in backlink count without a corresponding increase in referring domain diversity. Any of these patterns suggests link acquisition that may have worked historically but carries increasing risk as Google's spam detection improves.

For your own site, the same checks apply. If you previously acquired links through tactics that now look questionable, use Ahrefs or Semrush to identify those domains and consider disavowing them via Google Search Console. The disavow tool tells Google to ignore specific links when assessing your site's authority. Use it selectively for domains that are clearly spam, not as a precautionary exercise across your entire backlink profile.

When studying a competitor's backlinks with the intention of replicating them, focus exclusively on the editorial, resource, and citation links from authoritative domains. These are the links worth pursuing. Attempting to replicate manipulative link patterns carries significant risk and is likely to produce weaker results than it once did.

What this means for your link building

Competitor backlink analysis converts link building from a volume activity into a precision one. Instead of pursuing any available link opportunity, you pursue the specific domains that have already demonstrated relevance to your niche and a willingness to link to sites like yours. This produces a smaller outreach list but a much higher conversion rate and a stronger signal to Google per link earned.

The process scales as your domain grows. At an early stage, the priority is earning links from the most accessible prospect types: relevant directories, resource pages in your niche, and any original research or data you can produce that gives editorial sites a reason to cite you. As your authority builds, the editorial links that were previously out of reach become more attainable because your domain carries enough credibility to be considered a citable source.

Run a competitor backlink gap analysis quarterly and update your outreach prospect list with any new referring domains that appeared for rivals during that period. A competitor that earned a significant new link from an authoritative domain in your niche has given you a qualified prospect you did not previously have. The gap analysis catches these additions automatically and keeps your link-building pipeline populated with relevant, warm targets.

Pair the backlink gap analysis with a content audit to ensure every link you pursue points to a page worth linking to. A strong outreach effort is wasted if the destination page does not deliver on the promise of the pitch. Before launching any outreach campaign, confirm that the target page is the strongest available piece of content on that topic and that it covers the subject in enough depth to justify a reference from a quality publication.

Common mistakes in competitor backlink analysis

The first mistake is focusing on volume rather than quality. A competitor with 10,000 backlinks may rank below one with 500 if those 500 come from genuinely authoritative, relevant domains. Filtering by domain rating or authority score and focusing on the top referring domains by quality, not by count, produces a more accurate picture of where a competitor's authority actually comes from.

The second mistake is targeting irrelevant referring domains. A site linking to your competitor from a page about an unrelated topic sends a weak relevance signal. Links earn their value partly from topical alignment. When filtering your gap analysis results, prioritise referring domains whose content is clearly relevant to your niche. A link from a loosely related domain is worth considerably less than one from a site that covers your exact subject area.

The third mistake is skipping manual verification. Automated gap analysis tools return large prospect lists quickly, but not every domain on the list is worth pursuing. Some are content farms with no editorial standards. Some are private blog networks that Google has already devalued. Reviewing each prospect manually before investing time in outreach removes low-value targets from your list and focuses your effort on domains that will actually move your rankings.

The fourth mistake is treating outreach as a numbers game. Sending the same template to every domain on your gap list with minor personalisation produces poor results. Each outreach message should reference a specific page on the target site, propose a specific addition or update, and make the value exchange clear. This takes more time per message but produces substantially better response rates.

Build a systematic process: export, filter, verify, categorise by link type, identify the content angle for each type, draft personalised pitches, send, track responses, and follow up once. This workflow turns the data from a competitor backlink analysis into actual links rather than a list of good intentions.