The 52-point SEO audit: what we check, and why it matters

Most SEO audits are data dumps. A crawler spits out 400 "errors", someone emails you a PDF, and you're left staring at a list with no idea what to fix first. That's not an audit — that's a chore list with no priorities.

A real audit answers three questions: what's broken, how much does it matter, and what do we fix first? Our audit runs 52 checkpoints across three buckets — technical, on-page, and off-page. Here's exactly what goes into each one, in plain English.

Bucket 1 — Technical: the foundations (about 18 checks)

Technical SEO is everything that determines whether search engines can reach, read, and understand your site at all. If this layer is broken, nothing else you do matters much. Our technical checks include:

• Crawlability: can Googlebot actually reach your important pages, or are they blocked by robots.txt, accidental noindex tags, or login walls?
• Indexation: which pages are in Google's index versus which should be — plus rogue indexed pages like tag archives, staging subdomains, or thin auto-generated URLs.
• Redirect chains and broken links: redirects that hop through three URLs before landing, and internal links pointing at 404s.
• XML sitemaps: does one exist, is it valid, is it submitted, and does it match what's actually indexable?
• Canonical tags: are they present, self-referencing where they should be, and not contradicting each other?
• Core Web Vitals: loading speed (LCP), interactivity (INP), and layout stability (CLS) on mobile and desktop.
• Mobile-friendliness: does the site genuinely work on a phone, not just "technically render"?
• HTTPS: valid certificate, no mixed-content warnings, all versions redirecting to one canonical URL.
• Hreflang (where relevant): if you serve multiple countries or languages, are the annotations correct and reciprocal?
• Server response and caching: slow servers and missing cache headers quietly drag everything down.

Technical issues are usually the highest-leverage finds in an audit. A single misconfigured noindex can wipe a site from search overnight — and we've seen it happen more than once.

Bucket 2 — On-page: what searchers actually see (about 20 checks)

Once the foundations are sound, we look at the pages themselves: do they deserve to rank for the phrases they're targeting? Checks include:

• Titles: unique, descriptive, and written for humans — not stuffed with keywords or duplicated across 40 pages.
• Meta descriptions: present and compelling enough to earn the click (they don't directly rank you, but they win traffic).
• Headings: one clear H1 per page, logical H2/H3 structure that mirrors what the page is actually about.
• Content depth vs. intent: does the page genuinely answer what the searcher wanted, or is it 200 words of filler?
• Thin and duplicate content: pages with almost no unique value, or the same content living at multiple URLs.
• Internal linking: orphan pages with no internal links pointing at them, and whether your most important pages get the most internal link weight.
• Image optimisation: descriptive alt text, sensible filenames, and files that aren't 4MB each.
• Schema markup: structured data for FAQs, products, reviews, or local business info — validated, not just pasted in.
• URL structure: short, readable, stable URLs rather than parameter soup.

On-page work is where most of the compounding happens. A page that matches search intent and is properly structured doesn't just rank once — it keeps earning traffic month after month.

Bucket 3 — Off-page: your reputation (about 14 checks)

Google treats links from other sites as votes of confidence. But not all votes count equally, and some actively hurt. We check:

• Backlink quality over quantity: a handful of links from real, relevant sites beats thousands from directories nobody visits.
• Referring domain diversity: 100 links from 5 domains is far weaker than 100 links from 80 domains.
• Anchor text distribution: natural-looking variation versus over-optimised exact-match anchors that invite penalties.
• Toxic links: spammy, hacked, or paid link networks pointing at the site — and whether disavowal is warranted.
• Brand mentions: places your company is mentioned without a link — easy outreach wins.
• Local citations: consistent name, address, and phone number across directories (for businesses serving a local area).
• Competitor gap: where the sites outranking you are getting links that you're not.

Ranked by impact, not just listed

Here's the part most audits skip: every finding gets two ratings — severity (how badly is this hurting you?) and expected impact (how much would fixing it help?). A sitewide noindex tag and a missing image alt attribute are both "issues", but they are not the same issue. One costs you all your traffic; the other costs you almost nothing.

Your action plan is then ordered by impact relative to effort: the big, easy wins first, the nice-to-haves last. That's the difference between an audit that sits in a drawer and one that actually moves rankings.

An audit is a map, not the journey. But without a good map, every step is a guess.