Ahrefs for Ecommerce SEO Audits: Strengths and Gaps

Ecommerce sites break SEO tools in specific ways. Thousands of near-identical product pages, faceted navigation generating URL combinations without limit, variants that duplicate each other, and stock that changes daily. This is a look at how Ahrefs Site Audit handles that shape of site, what it surfaces well, and the gaps worth knowing about.

What Ahrefs does well on a catalogue

Crawl scale. Ahrefs handles large catalogues without the configuration effort a desktop crawler needs. For a site with tens of thousands of product URLs, that matters more than any individual check.

Duplicate detection across templates. Product variants that differ only by size or colour are the classic ecommerce duplication problem, and the audit surfaces clusters rather than making you spot them by eye.

Internal link distribution. Ahrefs reports internal link counts per URL, which is how you find deep product pages that are technically live but effectively invisible because nothing links to them. On a large catalogue that is often hundreds of URLs.

Backlink data, which is genuinely best in class. For ecommerce, knowing which category pages have earned links tells you where authority already sits and which pages are worth consolidating toward. Nothing else matches the index depth here.

Crawl comparison. Diffing one crawl against the last is how you catch a deploy that accidentally noindexed a template.

The gaps on ecommerce specifically

Faceted navigation still needs your judgement. The audit will show you thousands of parameter URLs. Deciding which combinations deserve indexing, which should canonicalise to the unfiltered category, and which should be blocked outright is a strategy call the tool surfaces but does not make. Expect to spend real time here regardless of tooling.

Product schema completeness is checked shallowly. You get told whether structured data exists. Whether every product carries price, priceCurrency, availability, brand and a valid aggregateRating — the fields that actually determine rich result eligibility — usually needs the Rich Results Test on sample URLs from each template.

Out-of-stock handling has no single right answer. Whether discontinued products should 404, 410, redirect or stay live with an availability flag depends on your catalogue churn. No audit tool decides this for you.

Search Console integration is present but shallow. Sorting technical findings by whether the affected URLs actually earn impressions is the fastest way to prioritise on a large catalogue, and doing it properly usually means exporting both sides and joining them yourself.

Pricing. Ahrefs is priced for agencies and enterprise, per-seat costs escalate for teams, and there is no genuinely free tier. For a single-store operator the audit module alone rarely justifies the subscription — though if you already pay for the keyword and backlink data, the audit is effectively free.

The ecommerce audit checklist that matters

Whatever tool you use, these are the checks that move rankings on a catalogue:

1. Variant canonicals — every variant URL canonicalising to the master product, not to itself.

1. Faceted URL policy — a deliberate, documented decision on which filter combinations index.
2. Product schema fields — validated per template, not per site.
3. Category page substance — enough unique content that the page is more than a product grid.
4. Pagination canonicals — page 2 self-canonicalising, not pointing at page 1.
5. Image optimisation — product photography served at rendered size in a modern format.
6. Internal links to deep products — nothing important more than three clicks from the homepage.
7. Out-of-stock policy — consistent and deliberate.

Where a second tool helps

The gap most ecommerce teams feel is not crawl coverage — Ahrefs has that. It is the join between technical findings and search performance, plus the cannibalisation problem catalogues create naturally. Category pages and their top product pages frequently compete for the same query, and spotting that requires knowing which page Google actually routes each query to.

UtilitySEO covers that specific gap: it reads query routing from Search Console to surface cannibalisation without manual keyword grouping, joins audit findings to GSC and GA4 so you can sort by revenue impact, and renders with real Chromium so a JavaScript storefront is audited as customers see it. It is not a replacement for Ahrefs' backlink index, which remains the best available. The two answer different questions.

The verdict

For ecommerce, Ahrefs Site Audit is a strong general-purpose crawler with the best backlink data attached to it. It scales, it finds the duplication, and it tells you where authority sits. The gaps are the ecommerce-specific judgement calls it surfaces but cannot make, and the performance join that tells you which findings are worth your Tuesday. Budget time for the first and a second data source for the second.