A backlink audit is a review of every link pointing at your site. It finds the harmful or toxic links that can damage your backlink profile and lower your search rankings. Removing them protects your site from Google penalties and gives you a cleaner base for your link-building efforts.
Your backlink profile is one of the main things Google looks at when ranking your site. Regular audits let you watch your links, spot spammy or irrelevant ones, and put your effort into earning relevant, high-quality links instead.
How backlink audits work
An audit is how you find harmful links before they cost you rankings. Timing matters too, and regular checks belong in any routine for SEO health.
What a backlink audit covers
A backlink audit is a detailed review of all external links that point to your website. This process examines the quality, relevance, and quantity of your backlinks. It helps you spot toxic links: links from spammy or low-quality sites that can damage your SEO.
During the audit, you assess if links come from trustworthy sources or if they use unnatural anchor texts. You also check if your backlink profile is balanced, with a mix of branded and keyword-rich links. Ahrefs, Moz and SEMrush all report on each backlink’s status, which saves a lot of manual checking.
Why backlink audits matter
Backlink audits protect your website’s SEO health by identifying harmful links that could trigger penalties from search engines. Toxic backlinks can lower your site’s authority and hurt your search engine rankings. Regular audits keep your backlink profile credible.
By removing or disavowing bad links, you stop them from dragging down your site’s performance. Audits also show which types of backlinks suit your business, so you know where to look for more.
When to run a backlink audit
Run a backlink audit at least once or twice a year. Some situations call for one straight away:
- After a drop in search rankings
- After a Google penalty or manual action notice
- When you notice an increase in spammy or irrelevant backlinks
- Before starting a new SEO campaign to understand your current link status
Checking at these points lets you deal with problems before they spread.
Identifying toxic and spammy backlinks
You need to be able to recognise harmful backlinks that damage your SEO performance and online reputation. The earlier you spot them, the less damage they do.
What toxic links look like
Toxic links often come from websites with low domain authority or poor trustworthiness. These links can use spammy anchor text that looks unnatural or over-optimised. For example, exact-match anchors repeated excessively may signal manipulative link building.
Look for backlinks from sites unrelated to your industry or niche. If the source looks suspicious (gambling or adult content sites, for example) and has no editorial standards, the link is probably toxic.
Other signs include unnatural spikes in backlinks over a short time and patterns of automated or paid link schemes. These can trigger search engine penalties, harming your ranking.
Spam scores and red flags
Spam scores measure how likely a link is to be harmful based on various factors, including domain age, link quality, and content relevance. Third party tools such as Moz Link Explorer and Majestic give each linking domain a spam or trust score. Google Search Console lists the sites that link to you but has no spam score.
High spam scores are red flags indicating unhealthy backlinks. These are associated with link farms, private blog networks (PBNs), and sites with little or no real content. You should prioritise removing or disavowing links with high spam scores during your backlink audit.
Watch out for links from sites that generate excessive outbound links or use aggressive link exchange schemes. These behaviours often point to link spam designed solely to manipulate rankings.
Common sources of spammy backlinks
Spammy backlinks frequently originate from link farms, networks of websites built only to pass links. These sites tend to have repetitive content, poor design, and little user value.
Another source is private blog networks (PBNs), which often disguise low-quality sites to link back to your pages. Links from irrelevant industries, such as those dealing with adult content or gambling, also count as spammy.
You might find spammy backlinks from comment spam, forum posts, or directories that do not moderate submissions properly. Always evaluate the credibility and relevance of your backlink sources during your audit.
Assessing your backlink profile
To improve your backlink profile, you need to carefully check the quality of your backlinks, the types of anchor texts used, and whether the links carry link equity. Each one affects your site’s authority.
Link quality metrics
Start with link quality metrics like Domain Authority (DA), Page Authority (PA), URL Rating (UR), and Domain Rating (DR). These scores tell you how trustworthy and powerful a referring domain or page is. Links from sites with high DA or DR bring more value to your backlink profile.
The number of referring domains matters too; more unique domains usually mean a stronger profile. Check topical relevance as well, so links come from websites relevant to your niche. Avoid backlinks from spammy or low-quality sites, as these can harm your site’s authority and risk Google penalties.
Anchor text analysis
Review the anchor text distribution in your backlink profile. Anchor text should be balanced between branded terms, exact match keywords, and natural phrases. Overusing the same keyword-rich anchor text can look unnatural and trigger penalties.
Branded anchors (your brand name or website) help build authority safely. Mix in generic anchors like “click here” for a natural pattern. Check whether the anchor text reflects your site’s content and keywords accurately.
Nofollow and dofollow links
Dofollow links pass link equity, which feeds your site’s authority. These are the links you want most from reputable, relevant sources.
Nofollow links don’t pass direct SEO value but can still send visitors and diversify your backlink profile. A healthy profile has a mix of both, which looks natural to search engines. Use tools like Moz or Ahrefs to see the proportion of nofollow versus dofollow links, making sure you’re not overly reliant on either type.
Backlink audit tools
You need tools that give clear data on link quality and flag spammy or toxic links quickly.
What the main tools offer
Ahrefs, SEMrush, Moz and Majestic all offer detailed backlink data. They help you track link sources, anchor text, and link quality to spot harmful links. Many include toxicity scores that flag suspicious or spammy backlinks automatically.
Google Search Console is free and quick. It shows the backlinks Google has found, which is a useful check on the other tools. Paid tools provide more depth, like competitor backlink analysis and link history trends.
Look for tools with features such as:
- Detailed link profiles
- Link health scores
- Anchor text analysis
- Competitor backlink comparison
- Exportable reports for easy review
These make removal and disavow decisions quicker to reach.
Choosing a tool
When picking a backlink audit tool, consider your site size, budget, and goals. For larger sites or agencies, Ahrefs and SEMrush offer full backlink analytics, link monitoring, and regular updates. They are suitable for detailed audits and ongoing tracking.
If you want straightforward link quality scores and trust metrics, Moz and Majestic are good choices. Moz’s Link Explorer gives insight into domain authority and spam scores, while Majestic focuses on link trust and citation flow.
For beginners or small websites, Google Search Console provides enough data to start auditing without extra cost.
Balance tool cost against your audit complexity and how often you will check backlinks to pick the best fit.
Fitting audits into your SEO routine
Backlink audit tools work best when part of your regular SEO checks. Use them to build a clear picture of your link profile alongside keyword tracking and site health reports. Many tools let you schedule automated audits and alert you about new toxic links.
Export data often to share with your team. Combining data from Ahrefs, SEMrush, and Google Search Console gives you a fuller picture than any one tool.
Set reminders for periodic backlink reviews in whichever tool you choose.
How to run a backlink audit, step by step
To safely build your site’s authority, you need to gather accurate backlink data, carefully examine each link’s value, and compare your profile with competitors.
Collect and consolidate backlink data
Start by gathering all backlinks that point to your site. Use tools like Ahrefs, SEMrush, or LinkScout to pull full lists of inbound links. Export this data into a single spreadsheet for easier review.
Focus on collecting key details for each backlink, such as the source URL, anchor text, link type (follow or nofollow), and domain authority. Consolidating this information helps you spot patterns and locate suspicious links.
Remove duplicates and combine reports from different tools. Everything after this works from that one sheet.
Review and filter links
Next, carefully evaluate each backlink to identify toxic links that could harm your SEO. Toxic links often come from spammy, irrelevant, or low-quality sites.
Check factors like relevance, link context, and the authority of the linking domain. Also, look at anchor texts; overuse of exact-match keywords or branded terms can influence your link profile differently.
Filter out harmful links by marking them for removal or disavowal. High spam scores and sudden link spikes are the warning signs to look for.
Benchmark against competitors
After refining your backlinks, compare your link profile with key competitors. Use competitor analysis tools to see their backlink quantity, quality, and referring domains.
This benchmarking reveals gaps in your strategy and helps you find new link-building opportunities. For example, if competitors have links from industry-specific blogs where you don’t, consider reaching out to similar sites.
Their anchors and sources also show which kinds of sites link within your sector.
Removing or disavowing harmful links
When you find toxic backlinks, you must act carefully to protect your site’s SEO. You can either ask webmasters to remove harmful links or use Google’s Disavow Tool to tell Google not to count them. Both need care, because a mistake can throw away links you wanted to keep.
Requesting link removal
Start by identifying the toxic backlinks you want removed. Then, contact the website owners directly with a clear and polite request. Be specific about which link you want taken down and why it harms your site’s reputation.
Keep your message professional and provide all necessary details, such as the URL of the harmful link. Some owners will comply quickly, but others may ignore your request. Keep a record of every attempt. You may need it if you decide to use the disavow tool later.
Using the disavow tool
If link removal requests fail or you face many toxic links, you can use the Google Disavow Tool. This tool tells Google to ignore certain backlinks when ranking your site.
Prepare a disavow file listing all the URLs or domains you want to disavow. Use a plain text format and include one entry per line. Be cautious: disavowing good links by mistake can hurt your SEO. Only include links you are sure are toxic.
Upload the disavow file through Google Search Console. Google will then treat those backlinks as non-existent, helping protect your site’s ranking from penalties caused by spammy or harmful links.
Keeping disavow files tidy
Keep your disavow file clean and updated. Regularly review it as part of your link management process. Avoid including backlinks that may be low quality but are not clearly harmful. Overusing the tool can weaken your link profile and reduce your site’s authority.
Organise your list by domains rather than individual URLs when possible. This approach is usually more effective since toxic backlinks often come from whole sites, not just a single page.
Save a copy of your disavow file before submitting and after any updates. This keeps your backlink audit transparent and lets you track changes over time. Add comments in the file saying why each entry went in, so the reasoning is there when you revisit it.
Building and maintaining a healthy backlink profile
You need a clear plan to build authority through quality links while avoiding harmful ones. That takes regular work on link acquisition, relevance and monitoring.
Link building for authority
Focus on acquiring links from trustworthy and relevant websites. Guest posts on reputable sites remain one of the best link-building strategies. They offer high trust flow and help you reach targeted audiences.
Look for link-building opportunities that fit your niche. Avoid spammy or irrelevant sites, as these can lower your citation flow and cause penalties. Prioritise sites with strong topical trust flow, which indicates authority in your specific subject area.
Use a mix of methods: guest posts, partnerships and outreach. Consistency matters more than quantity.
Topical relevance
Your backlinks should relate closely to your website’s content. Topical relevance signals to search engines that your site is an expert in its field.
Analyse potential linking sites to check their topical trust flow. Links from sites in your industry or niche carry more SEO weight than unrelated sources. Aim to build links naturally through content that matches your audience’s interests.
Focus on creating valuable content that earns links rather than relying heavily on paid or manipulative link-building tactics.
Ongoing monitoring
Keep track of your backlinks regularly to maintain a healthy profile. Use SEO tools to check the quality of new and existing links. Look for drops in trust flow or sudden increases in low-quality links that might indicate toxic backlinks.
Set up alerts for new backlinks and analyse if they align with your link-building strategy. Remove or disavow harmful links to protect your site’s ranking and avoid penalties. Regular audits help you adjust your tactics based on what works and what doesn’t.
Monitoring also reveals new link-building opportunities. Knowing where your strongest links come from lets you focus on similar sites to continue growing your authority safely.
Measuring the effect
After an audit, watch search rankings and organic traffic to see what changed, then adjust how you build links.
Tracking rankings and organic traffic
You should regularly check how your site ranks for important keywords after cleaning up toxic links. Use tools like Google Search Console or third-party SEO platforms to track changes in your search engine ranking. Notice shifts in your position for high-value keywords and watch your organic search traffic levels closely.
Look out for sudden drops, which may signal missed toxic backlinks or other issues. Traffic data shows whether visibility changed after the clean-up. Record ranking progress weekly or monthly, so you have data to guide your next steps.
Refining how you get backlinks
After identifying and removing harmful links, review how you get new backlinks. Focus on building links from respected, relevant sites in your niche to strengthen your backlink profile safely.
Create clear criteria for what makes a good backlink, such as domain authority, relevance, and trustworthiness. Avoid shortcuts like purchasing links, which can hurt your SEO strategy. Instead, aim for natural link growth through guest posts, partnerships, and quality content. Keep analysing backlinks regularly to spot patterns in successful link sources.
Improving over time
Treat SEO performance as a long-term job. Use what you learn from your backlink audit and traffic data to adjust your content and link-building plans.
Test different strategies and track how they affect search rankings and organic traffic. For example, focus more on creating content that attracts natural backlinks from authoritative sites. Use reporting tools to pinpoint which tactics work best.
Keep removing low-quality links and looking for new, relevant ones.
If you want a hand, Totally.Digital does technical SEO work, including a detailed SEO audit, alongside organic marketing and paid ads.