What a free tool score actually tells you
Run any website through a free SEO audit checklist, and you get a number. Sometimes it’s out of 100, sometimes it’s a letter grade, and it almost always arrives with a list of things marked red.
That number is nothing. It usually catches missing meta tags, obvious broken images or a sitemap that doesn’t exist. It’s a scan, not an audit, and an SEO audit covers a much broader scope.
What a proper SEO audit covers is more ground than a scanner can reach, because most of what decides whether a site ranks is not a single measurable defect. It’s a set of judgements about crawling, content and intent that a script cannot make on its own.
Crawling and indexing: What Google Search Console shows that a scanner can’t
Before anything else, a proper audit checks whether your pages can be found and indexed at all. A free tool will tell you a sitemap exists. It won’t tell you whether Google has actually chosen to index every page in it, or why a page you care about isn’t showing up in search results despite looking fine on screen.
That distinction, discovered versus indexed, only shows up in Google Search Console, and reading it takes judgement rather than a pass or fail flag. A page can be crawled, rendered correctly and still sit outside the index because Google decided it wasn’t worth including. No automated scanner reports that, because a scanner doesn’t have access to Google’s own index data; it can only guess from what’s on the page.
This is the audit’s foundation, the same starting point as our own technical SEO work. Content and design decisions further down the list mean nothing for a page nobody can find.
If you want someone to look at your own crawl and indexing data rather than guess from a scanner’s checklist, ask us about an audit.
The technical checks a proper audit runs
Once indexing is confirmed, a proper audit moves through the technical foundations: crawl errors, site structure and speed, run as part of Agnikii’s own audit on every engagement.
Speed in particular needs more than a single score. Core Web Vitals measure loading speed, visual stability and responsiveness, and Google names them a confirmed part of how pages are ranked. A free tool report will usually surface a headline speed grade. It’s less likely to explain which specific element is causing instability on your product pages, or whether the problem is your own code or a third-party script you’ve forgotten is even loading.
Schema markup gets checked here too. Structured data across the site is part of Agnikii’s engagement, and it needs validating properly, since errors in it are silent; the markup is simply ignored rather than throwing a visible warning. A free scanner can confirm schema exists. It’s slower to say whether it’s correct, or whether an error is quietly costing you a rich result you’d otherwise get.
Speed and structure sit alongside two more checks that rarely fit into a one-page scan: whether the mobile version of the site matches desktop, and whether unnecessary page weight is slowing crawlers and visitors alike. A website carbon audit often surfaces the same bloated pages a technical SEO check flags, because heavier pages cost more to load and more to run.
Content against intent, not content against a keyword count
Free SEO tools will often tell you a page mentions your target phrase enough times, or not enough. That is a word count exercise dressed up as SEO advice.
A proper audit asks a different question: does this page actually answer what the person searching is trying to do? A page can use the right keyword throughout and still fail, because it explains a concept when the searcher wanted a price, or lists features when the searcher wanted to compare two options. Matching content to intent is a judgement call about what the reader needs, made by reading the page and the search results around it, not a term-frequency count a script can run in a second.
This is also where thin or duplicated content across similar pages gets caught, something a single-page scanner misses entirely because it only ever looks at one URL at a time.
Local signals, if you serve a location
For a business serving a defined area, a proper audit also checks local signals: how the business appears in Google Business Profile, whether listings are consistent, and how location pages and reviews support each other. Google Business Profile is the tool that governs how a business shows up on Search and Maps, and a free site-only scanner has no visibility into it at all, because it isn’t part of the website being scanned.
Getting this consistent matters for any business serving Gloucestershire, which is why local coverage sits inside our SEO in Cheltenham work rather than as a separate add-on. Our local SEO guide for Cheltenham goes into more detail on what consistent listings look like in practice.
Links: what a proper audit looks at, and what it doesn’t promise
A proper audit reviews the links pointing at a site: whether they look genuine, whether any look risky, and how the site’s own pages link to each other internally. What it does not do is promise a specific number of new links or a guaranteed ranking movement from fixing any of this. We don’t offer that, and neither can anyone else honestly; Google doesn’t sell placements or share its algorithm, so what a proper audit gives you is evidence of what’s holding a site back, not a promise of what will happen next.
What a proper SEO audit covers, in summary
Put together, the gap between a free score and a proper audit is the gap between a scan and a judgement. A scanner reads what’s on a single page and flags obvious defects. A proper audit reads Search Console data the scanner can’t access, weighs content against what a searcher actually wants, checks local SEO signals that live outside the website entirely, and looks at links with a person’s judgement rather than a script’s threshold.
None of this replaces monthly reporting once work is under way, in plain English rather than a jargon-heavy dashboard, so you can see what actually moved and why. If your last SEO audit was a free score and a list of red flags, an audit that starts with your Search Console data and works outward, the way our SEO in Cheltenham engagements do, is worth having done properly. Get in touch to ask about an audit.