SEO scans: what they are, what they involve and when they’re actually useful

Many companies that come to us have already had an ‘SEO scan’ carried out. Sometimes this was an automated ten-page report full of red icons. Sometimes it was a vaguely worded email listing five ‘areas for improvement’. Rarely was it anything that actually helped. That’s not because an SEO scan is a useless concept – quite the opposite. The problem lies in how superficially most scans are carried out and how little is actually done with the results afterwards.

In this article, we explain exactly what a good SEO scan involves, which elements really belong in it, which tools we use, and how you can turn a scan into a concrete action plan. No sales pitch – just an honest picture of what you can expect.

What exactly is an SEO scan?

An SEO scan, also known as an SEO audit or SEO check, is a systematic analysis of your website to identify all the factors that influence your search engine rankings. That sounds broad, because it is broad. After all, SEO isn’t just about one thing.

A comprehensive scan looks at three main areas: the technical condition of your website, the quality and relevance of your content, and the strength of your backlink profile. These three elements are closely interlinked. Great content is of no use to you if Google cannot index your pages properly. And a flawless technical foundation won’t get you anywhere either if the text on your site isn’t helpful to anyone.

What sets a good scan apart from an automated quick scan is context. Tools flag up problems, but they don’t understand your market, your competitors or your target audience. That interpretative work is where the value lies.

The three pillars of a thorough SEO scan

1. Technical SEO

The technical side forms the foundation. If that isn’t right, everything else misses the mark. During a technical SEO scan, we look at the factors that determine whether Google can actually find, read and evaluate your website in the first place.

• Crawlability and indexing: can search engines access all relevant pages? Consider ensuring your robots.txt file is correct, that your sitemap.xml is up to date, and that any redirect chains are resolved.
• Page speed and Core Web Vitals: loading time has a direct impact on both rankings and conversion rates. The three Core Web Vitals (LCP, INP and CLS) are the most concrete metrics.
• Mobile-friendliness: Google primarily indexes your site based on its mobile version. A poor mobile experience is therefore a direct ranking factor.
• HTTPS and security: a valid SSL certificate is a basic requirement.
• Structured data (schema markup): helps search engines and AI systems to better understand the content of web pages and increases the likelihood of rich snippets appearing in search results.
• Technical errors: 404 pages, orphan pages (pages that do not link to anything), duplicate content and canonical issues.

A common mistake we come across: websites that have all sorts of minor technical issues which, taken individually, seem harmless, but which, when combined, have a significant negative impact on how Google rates the site. A technical scan reveals this combination.

2. Content and on-page SEO

Content is the second key pillar. Here, we look not only at whether you’re using the right keywords, but also at whether your content aligns with your target audience’s search intent and whether it meets Google’s E-E-A-T standards (Experience, Expertise, Authoritativeness, Trustworthiness).

• Keyword usage: are the right terms used on the right pages, without keyword stuffing?
• Search intent match: does the page answer the question a searcher is asking, or are you missing the mark?
• Title tags and meta descriptions: are they unique, informative and within the character limit?
• Heading structure (H1/H2/H3): is it organised logically and consistently?
• Content quality: thin, outdated or duplicate content consistently drags rankings down.
• Internal linking: do pages link to one another in a logical way, so that both visitors and crawlers can navigate the site effectively?

One point we’d like to make here, in all honesty: many content audits get bogged down in technical on-page elements. But the real question is whether your content is useful to a specific person at a specific moment. That requires a qualitative assessment, not just a tool score.

3. Link profile and authority

A website’s backlink profile says a lot about the authority Google attributes to it. It’s not about quantity, but about quality. A handful of links from strong, relevant domains carry more weight than a hundred links from random or dubious sites.

• The number of referring domains and their quality.
• Anchor text distribution: is it natural and varied, or rather one-sided?
• Toxic links: are there any links that are actively damaging your authority?
• Competitor analysis: how do you compare with the sites currently ranking highest for your search terms?

What tools do we use for an SEO scan?

We never rely on a single tool, because no single platform provides the full picture. In practice, we combine multiple data sources and compare them side by side.

• Google Search Console: the most direct source of data on indexing issues, search performance and technical errors. Free and indispensable.
• Screaming Frog: a crawling tool that allows us to map out the entire site structure, including broken links, redirect chains and duplicate content.
• Ahrefs or Semrush: for backlink analysis, competitor research and keyword data. Semrush is a powerful all-in-one suite; Ahrefs excels particularly in backlink data and site audits.
• Google PageSpeed Insights: for speed analysis and Core Web Vitals on a per-page basis.
• Manual assessment: no tool can replace reviewing pages with a critical eye for search intent, content quality and user experience.

Tools such as Screaming Frog and Google Search Console are absolutely essential to our process. But also Semrush plays a key role in analysing competition and backlinks.

What will an SEO scan look like in 2025?

The world of search has changed dramatically over the past two years. Google now displays much more than just blue links in the SERP: AI Overviews, AI Mode answers, videos, shopping results and user-generated content all appear ahead of the traditional organic results. This has direct implications for what an SEO scan needs to cover.

A scan that will still be relevant in 2025 should therefore also consider:

• GEO readiness (Generative Engine Optimisation): is your content structured in such a way that AI systems such as ChatGPT, Google AI Overviews and Gemini can extract useful answers from it?
• E-E-A-T signals: Google carefully selects sources for AI-generated answers based on technical quality, content and authority. Those who score well in these areas will also increase their visibility in AI-driven search results.
• LLM visibility: is your brand or domain already being cited in AI responses? This is a new, rapidly growing form of organic visibility that very few companies are actively monitoring at present.
• Conversational search intent: search queries are becoming longer and more conversational. Content that addresses complex, multi-step queries performs better in today’s search results.

This does not mean that traditional SEO signals no longer matter. Speed, crawlability, strong content and a healthy backlink profile remain the foundation. But a scan that only covers those basics misses half the picture.

When do you need an SEO scan?

An SEO scan is not a one-off task that you simply ‘tick off’. It is a regular assessment that helps you determine where you stand and what your priorities are. That said, there are situations where a scan is particularly urgent:

• Your organic traffic has fallen over the past few months, for no apparent reason.
• You’ve recently had a website redesign or migration. These are the moments when technical SEO errors are most likely to creep in.
• You’re about to enter a new product, service or market and want to know where your opportunities lie.
• Google has rolled out a core update and you want to know whether your site has been affected.
• You’ve never had a thorough audit carried out and simply don’t know how your website is performing.

SEO is an ongoing process that requires regular analysis and adjustments. A single scan per year is insufficient for most websites, particularly if you actively publish content or make regular technical changes. For growing businesses, we recommend a quarterly cycle: lighter monthly monitoring and a more thorough analysis every quarter.

From scan to action: here’s how to go about it

An SEO scan is only useful if the findings are turned into concrete improvements. The biggest problem we see is that companies commission an audit, receive a list of dozens of areas for improvement, and then don’t know where to start. The report then ends up in a drawer.

Our approach is based on prioritising along two axes: impact versus effort. Issues that cause significant damage and are relatively easy to resolve are tackled first. Examples include fixing redirect chains, resolving indexing issues, or optimising thin pages that are already ranking but could perform better.

1. Establish a baseline: measure your current rankings, organic traffic and technical health using Search Console and your preferred rank tracker.
2. Prioritise based on impact: tackle the issues that directly affect crawling, indexing or rankings first.
3. Plan content and link improvements: these take longer to implement but are crucial for sustainable growth.
4. Measure the impact: implement changes in stages and assess the results after four to eight weeks.
5. To reiterate: SEO is constantly changing. What works today may be rendered obsolete in three months’ time by an algorithm update.

A resource we regularly consult ourselves for the latest best practices: the Google Search Central Blog, where Google shares real-time updates on ranking changes and technical guidelines.

Free SEO scan or paid audit: what’s the difference?

You can have your website analysed for free using automated tools. This gives you an initial idea of any technical problems and is a good starting point for identifying any major issues. But be realistic about their limitations: automated tools generate reports, not a strategy.

A professional SEO audit goes a step further. It links the technical findings to your business objectives, analyses your competitive position in your specific market, assesses the quality of your content, and delivers a prioritised action plan that you can actually implement. That’s the step from ‘knowing there are problems’ to ‘knowing what you need to do first and why’.

Would you like to carry out a basic assessment yourself first? If so, use Google Search Console as a starting point, combined with PageSpeed Insights for speed data. It’s free and provides valuable information. If you’re struggling, or if you want a comprehensive overview with a concrete plan, then a professional scan is the logical next step.