What Is a Backlink Audit and How to Do One

A backlink audit is a systematic review of every link pointing to your website — what it is, where it comes from, and what it's doing to your rankings. Done properly, an audit tells you three things: which links are actively contributing to your authority, which links are dead weight with no meaningful impact, and — critically — which links may be suppressing your rankings or exposing you to a manual action from Google.

Most sites that have been actively building links for more than 12 months have never conducted a proper audit. The result is a profile that accumulates unchecked — good links, useless links, and occasionally damaging links all mixed together, with no systematic understanding of what the profile looks like from Google's perspective. A backlink audit changes that. It gives you a clear, actionable picture of your link profile and a prioritised action plan for improving it.

This guide covers the full audit process from tool setup through to the final output: a categorised link inventory, a list of links to disavow, and a gap analysis that feeds directly into your next link building campaign.

When You Need a Backlink Audit

Not every site needs an audit on a fixed schedule — the right trigger depends on what's happening with your rankings and traffic. Audit immediately if:

• You've experienced a significant, unexplained drop in organic traffic or rankings

• You've received a manual action notification in Google Search Console

• You're preparing to launch a new link building campaign and want to understand your baseline

• You've acquired a domain or website and are inheriting an unknown link history

• You've been building links for 12+ months without reviewing the cumulative profile

For actively managed sites, a quarterly audit cadence is appropriate. For sites running passive link profiles without active acquisition, semi-annual reviews are sufficient.

Step 1: Pull Your Complete Backlink Data

No single tool captures 100% of a site's backlinks — Ahrefs, Semrush, and Moz each index different portions of the web at different crawl frequencies. For a comprehensive audit, pull data from at least two sources and deduplicate.

Primary tools

• Ahrefs: the largest backlink index. Export all backlinks from Site Explorer → Backlinks, filtered to 'One link per domain' for the referring domain view, and 'All links' for the full backlink inventory. Export as CSV.

• Google Search Console: Settings → Links → Export. This shows you the links Google has actually discovered and attributed to your site — the ground truth of what Google knows about. It's less comprehensive than Ahrefs but more authoritative as a signal of what Google is actually seeing.

• Semrush: Backlink Analytics → Backlinks → Export. Useful as a cross-reference to catch links Ahrefs hasn't indexed.

Combine these exports into a single master spreadsheet, deduplicate by URL, and flag which tool(s) each link appears in. Links appearing in Google Search Console are the highest priority — Google definitely sees them. Links appearing only in third-party tools may or may not be indexed.

Step 2: Enrich the Data

A raw list of backlink URLs tells you nothing without context. Before you can evaluate each link, you need to enrich the dataset with the metrics that determine link quality.

Metrics to add for each referring domain:

• Domain Rating (DR) — pull from Ahrefs in bulk via the Batch Analysis tool

• Monthly organic traffic of the referring domain — available in Ahrefs domain overview

• Traffic country distribution — flag domains where the majority of traffic is not from your target market

• Moz Spam Score — available in bulk via Moz Link Explorer API or a bulk checker tool

• Anchor text used — already in the Ahrefs export

• Link type — dofollow or nofollow, also in the export

This enrichment step is the most time-consuming part of the audit but is what makes the rest of the process meaningful. A spreadsheet with 3,000 raw backlink URLs is not an audit; a spreadsheet with 3,000 enriched, categorised rows is.

Step 3: Categorise Every Link

With enriched data in hand, categorise each referring domain into one of five buckets:

Category	Definition and action
High value	DR 35+, real organic traffic, topically relevant, dofollow. These are your link building assets — protect and build on them.
Neutral / low value	DR 20–35 or low traffic but no obvious spam signals. These links are doing little but aren't harming you. No action required.
Irrelevant	High DR but no topical relevance — a tech blog linking to your iGaming site. Count the domain authority contribution but note the topical mismatch.
Suspicious	Low DR, zero organic traffic, high spam score, or unusual link pattern (100+ outbound links on the page). Flag for closer review.
Toxic	Confirmed spam, PBN, link farm, or manipulative pattern. Queue for disavow consideration.

For large link profiles, you can apply this categorisation at scale by setting filter rules: all domains with Spam Score above 7 go to Suspicious; all domains with zero organic traffic go to Suspicious; all domains with DR below 10 and no traffic go to Toxic candidate. This filters the list to a manageable number of domains requiring manual review.

Step 4: Anchor Text Analysis

Pull the full anchor text distribution from your enriched dataset. Calculate the percentage of dofollow links using each anchor text type:

Anchor type	Healthy range	Warning threshold
Branded anchors	35–55%	Below 25% — insufficient brand signal
Generic anchors ('click here', 'read more')	15–25%	Below 10% — over-optimised profile
Naked URL	5–10%	No specific warning threshold
Partial match keyword	10–20%	Above 30% — elevated penalty risk
Exact match keyword	5–12%	Above 15% — significant penalty risk in competitive niches

An anchor text profile outside these ranges is not necessarily penalised — but it represents elevated risk, particularly in competitive or YMYL niches where Google's scrutiny is higher. The audit should produce a specific anchor text rebalancing recommendation: which anchor types need more links built with them, and which need to be diluted through future campaigns using alternative anchors.

Step 5: Build the Disavow List

The disavow file is a Google Search Console submission that instructs Google to ignore specific links when evaluating your site. It is not a mandatory output of every audit — most healthy link profiles do not require a disavow submission. But for sites with known problematic link history, a manual action, or a significant proportion of toxic links, the disavow is an essential remediation step.

⚠️ Only disavow links you are genuinely confident are harming your profile. Indiscriminate disavowal of low-quality but harmless links can inadvertently remove links from valid sources and damage your profile. When in doubt, do not disavow.

The disavow file format is simple: one domain or URL per line, with domain-level disavowal (domain:example.com) preferred over individual URL disavowal for efficiency. Submit through Google Search Console → Links → Disavow Links. Google processes disavow files over several weeks, so do not expect immediate ranking changes.

Step 6: Gap Analysis and Campaign Recommendations

The final output of a backlink audit is not just a retrospective health assessment — it's a forward-looking campaign brief. The audit data tells you:

• Your current DR and the DR trajectory implied by your recent link acquisition rate

• The DR range of your existing referring domains — and whether your link building has been targeting the right tier

• The topical distribution of your referring domains — which niches are over-represented and which are absent

• The anchor text gaps that need to be filled in the next campaign to rebalance the distribution

• The competitor links you don't have yet — feeding directly into a link gap analysis

A complete audit output includes: the categorised link inventory, the disavow file (if applicable), the anchor text rebalancing recommendation, and a 90-day link building brief specifying the target DR range, preferred niche categories, anchor text allocations, and priority pages to build links to.

A backlink audit without a campaign brief at the end is half an audit. The point is not just to understand where you are — it's to know precisely what to do next. The brief is what converts the audit from a diagnostic exercise into an action plan.

Use LinksPulse to execute your post-audit link building campaign → linkspulse.com

FAQ

Q: How long does a backlink audit take?

For a site with under 500 referring domains, a thorough audit takes 3–5 hours from data export through to final categorisation and brief. For sites with 1,000–5,000 referring domains, allow 1–2 days. Above 5,000 referring domains, the enrichment and categorisation steps benefit from automation — spreadsheet formulas, bulk API pulls, or a specialist audit tool — to compress the timeline to a manageable duration.

Q: Do I need to pay for tools to do a backlink audit?

Not entirely, but the quality of a free-only audit is significantly lower than one using paid tools. Google Search Console is free and gives you Google's actual link data — essential. Ahrefs and Semrush require subscriptions but provide the enrichment data (DR, traffic, spam score) that makes categorisation possible. If budget is constrained, a one-month Ahrefs subscription used specifically for the audit and cancelled after the export is sufficient to conduct a quality audit.

Q: Should I always disavow toxic links?

No — disavowal is appropriate when you have evidence that specific toxic links are contributing to a ranking suppression or manual action, or when the link pattern is clearly the result of deliberate manipulation (a PBN campaign, a link scheme). For incidentally acquired spam links from comment spamming or scraper sites, Google has become sufficiently sophisticated to ignore rather than penalise — disavowal in these cases is unnecessary and carries the risk of removing adjacent legitimate links. Use the disavow tool deliberately, not defensively.

Q: How do I know if my site has a manual action related to backlinks?

Google Search Console sends a notification when a manual action is applied. Go to Search Console → Security & Manual Actions → Manual Actions. If a link scheme manual action is present, it will appear here with a description of the issue. Manual actions are relatively rare — most link profile problems manifest as algorithmic suppression rather than manual action. The absence of a manual action notification does not mean your link profile has no problems.

Q: How does LinksPulse help after a backlink audit?

The audit tells you what you need; LinksPulse gives you the inventory to get it. The anchor text rebalancing recommendation from your audit translates directly into placement criteria — which anchor types to specify on your next orders. The DR gap analysis tells you which tier of publishers to target. The topical distribution analysis tells you which niche filter to apply when browsing LinksPulse inventory. The audit brief and the marketplace are designed to work together.