Free SEO scan for your website.
Enter your URL and discover within seconds where your website is missing opportunities. Technology, content, meta tags and AI visibility, all in one scan. No registration, no cost, instant results.
Enter a URL, for example: theseo.nl or https://yoursite.co.uk/page. We use the address to run the scan, and we store it together with the scores in our own database, along with the page you came from and the campaign code if there was one. We also record your browser string and device type.
If you don’t enter an email address, we store nothing we could use to contact you; what we do keep is the count: which tool, which page, which referrer and which type of device. We never store an IP address. How long we keep what, and how you can have your input deleted, is set out in the privacy statement NL. What this site does and doesn’t store in your browser is set out in the cookie statement NL.
That was the automated scan. We take a manual look ourselves.
The scanner above reads one page. We go through your five most important pages by hand, compare you with the competitors ranking for your keywords, and find out where you're currently leaving revenue on the table. Afterwards we send you an invitation and go through it together.
- 01Your five most important pages, not just the homepage
- 02Comparison with the competitors currently ranking above you
- 03An order of priority: what first, what it delivers, how much work it is
- 04A half hour conversation where we go through it honestly
Request received
You'll receive a confirmation by email shortly. As soon as the scan is finished, we'll send you the invitation for the conversation.
Want to know when this breaks?
This scan is a snapshot in time. Most damage happens later, quietly: an update that switches on noindex, a developer who wrecks your title tag, a canonical that suddenly points to staging. You only notice once the traffic has already gone.
LinkLoop monitors every placement continuously and emails you the moment something changes. You see exactly what it was and what it is now.
View LinkLoop →24 checks across four categories
INS.03Content counts three checks and carries a fifth of the weight, so there a single check is worth double
The four cards above look the same size, and they're not. The 24 checks are spread unevenly across the four categories, and the final score weighs them differently again. Wherever those two bars diverge, a single check is worth more or less. The right hand column is that outcome: how many of the hundred points hang on a single check.
Where you gain points fastest sits on the right, not the left. Technical SEO has the most checks and so looks like the heaviest category, but precisely because the weight is spread over nine checks, a single technical check is the smallest step in the final score. The three content checks together share a fifth of the score and are therefore twice as heavy each. Both bars sit on the same scale, so you can see the difference rather than take our word for it.
What is an SEO scan and why do you need one
An SEO scan is a systematic check of your website against the factors that determine how easily you can be found in Google and in AI systems such as ChatGPT, Perplexity and Google AI Overviews. It doesn't look at a single element but at the whole picture: technology, content, structure and visibility to machines.
Small things you don't spot yourself
Many websites miss opportunities because of small technical errors that add up to a big effect. A missing meta description here, a slow server there, no structured data for AI. Each problem looks small on its own, but stacked together they hold back your growth structurally. TheSEO's free SEO scan shows you in seconds where those errors sit, so you know where to start.
When is an SEO scan worthwhile
After a website rebuild or migration, when your rankings drop without an obvious cause, or simply as a starting point before you put money into content or advertising. A scan beforehand stops you investing in content while the technical foundation still isn't right.
The difference an SEO scan makes
Below is a typical example of what we come across in a first scan, and what the situation looks like after acting on the recommendations.
AI visibility: the new layer of SEO
More and more search queries are being answered by AI systems. Google shows AI Overviews above the regular results, ChatGPT cites websites in its answers, and Perplexity builds entire research reports based on web pages. If your website isn't ready for these systems, you're missing a growing share of your potential reach.
Three factors the scan checks
The scan checks specifically for three factors that determine how well AI systems understand your content: structured data (Schema.org markup that tells machines what your page contains), entity clarity (whether your headings and content are clear enough to recognise your expertise) and social metadata (Open Graph and Twitter Cards that give context to platforms and AI).
Practical: what you can do now
At a minimum, add Organization, WebPage and FAQ schema to your most important pages. Make sure every page has a clear H1 that sums up the topic, followed by H2 subheadings that mark out sub-topics. And fill in your Open Graph tags in full: og:title, og:description and og:image.
Technical SEO: the foundation under your visibility
Technical SEO is about everything Google needs to find, load and understand your pages correctly. If the technology isn't right, it doesn't matter how good your content is: Google can't index it, or ranks it lower because of slow load times or security issues.
HTTPS and security
Google flags websites without HTTPS as ‘not secure’ in Chrome and uses HTTPS as a ranking signal, with a caveat of its own: Google calls it a very lightweight signal that carries less weight than good content, checked on 25 August 2026. We also check security headers (HSTS, CSP, X-Frame-Options) that protect your site against common attacks.
Speed and server response
Server response time (TTFB) is the starting point of every page load. Google counts under 800 milliseconds as good, and the scanner uses one second as a practical threshold. The response time itself is not a ranking factor, but it does delay everything that follows, including the values Google does weigh. We measure this from the Cloudflare network, so without the delay of your own connection. More on this is covered under technical SEO NL.
robots.txt and sitemap
Your robots.txt tells Google which pages it may and may not crawl, and that’s a different thing from indexing. Google itself notes that a blocked page can still appear in the search results if other sites link to it. If you actually want to keep a page out of the index, you use noindex or a password. An error in robots.txt can, however, make your entire site unfindable, because what isn’t crawled also isn’t understood. The XML sitemap helps Google discover all your pages, especially on larger sites with deep navigation.
DNS and email authentication
We also check whether your SPF and DMARC records are set up correctly. That’s an email check, not a ranking factor: John Mueller of Google said on this that DKIM and SPF play no role in Google Search, and Google doesn’t use a domain trust score. It’s in the scan because it sits in the same DNS settings you’re checking anyway, and because it protects your domain name against abuse in spoofed email.
Google's threshold and this scanner's two thresholds don't sit at the same point
The paragraph on server response mentions two thresholds in one sentence, and after that you can no longer see how far apart they are. On a scale, you can. To the left of the first line you're within what Google itself calls good, between the first and second line this scanner still calls it fast, and to the right of the third line the check turns red.
Between the first and second line sits two hundred milliseconds where the two verdicts disagree. Anyone sitting at 900 milliseconds gets a green tick from this scanner while also sitting above the threshold Google itself publishes. We write that down here rather than leave it out, because it's exactly the kind of discrepancy a scan report would otherwise talk over. The response time itself is not a ranking factor; it does delay everything that follows, including the values Google does weigh.
Two settings that look alike, and only one of them takes your page out of the search results
This is the confusion that gets made most often on this topic, and it's the costliest one. For each setting, below you can see what happens when it's fetched, what ends up in the index, and what a visitor sees in Google. The middle column is where the two routes diverge.
The bottom route actually needs the fetch to happen. That's the counterintuitive part of it: if you set a page to noindex and block it in robots.txt at the same time, the noindex is never read, so you end up with exactly the behaviour of the top row. If you accidentally block your entire site, nothing gets read any more and so nothing gets understood either, and that's the one error in the scan that can, on its own, take away your entire visibility.
On-page SEO and content: what Google sees when it reads your page
On-page SEO determines how Google interprets your page. The title tag is what appears in the search results, the meta description determines whether people click, and the heading structure (H1 to H3) tells Google how your content is put together.
Title tag and meta description
Your title tag needs to be short enough not to get cut off, and it needs to contain your main keyword. Google doesn't publish a character limit for this and cuts off by width; as a rule of thumb we use around 60 characters for the title and around 155 for the description. That description has to persuade visitors to click through. Miss either one, and you're leaving clicks on the table.
Images and alt text
Every image without alt text is a missed opportunity. Google can recognise what’s in a photo itself to some extent, but uses the alt text together with the surrounding text to work out what the image is about. It’s also the text a screen reader reads out loud. Describe what the image shows, briefly and specifically.
Internal links and canonical
Internal links help Google understand the structure of your site and distribute authority. A canonical URL indicates which version of the same content is the primary one. Google calls this a signal, not an instruction: it chooses the canonical URL itself and can pick a different one than the one you specify. If there’s no canonical at all, Google still chooses one, and that can be a different version than the one you intended.
Who is this free SEO scan for
This scan is built for business owners, marketers and web developers who want to know why their website gets fewer visitors than it could, or who are launching a new site and want to check the foundations are right. You don't need a technical background: every result comes with an explanation in plain language, with no abbreviations you have to go and look up afterwards.
Scanning a competitor's site too
You can also scan a competitor's website to see where they score strongly or weakly. That gives you a concrete picture of where your opportunities lie to overtake them in the search results.
Not sure about your local visibility in particular
Not sure about your local visibility in particular? Then also take a look at the local visibility checker NL, another free tool from our overview of tools and plugins.
One page of your site, and four verdicts no scanner can give
Before you read the result, it should be clear what it's about. What's looked at is the URL you enter and not the rest of your site, and what's measured is whatever can be measured automatically. The right hand column below is there because a scan report that promises those four things is promising something it can't deliver.
A score of 100 means 24 checks pass on a page. It doesn't mean you're easy to find, and a low score doesn't mean you're unfindable. It exists so you can see within a minute whether the basics are right, in plain language, with no account and no sales conversation. Anything that calls for a judgement rather than a measurement sits on the right and stays a job for a human.
Frequently asked questions about the SEO scan
What exactly does the free SEO scan check?
The scan checks four areas: technical SEO (HTTPS, speed, robots.txt, sitemap, security headers, DNS), on-page SEO (title tag, meta description, heading structure, images, canonical URL, internal links), content (word count, structure, indexability) and AI visibility (Schema.org markup, FAQ schema, Open Graph tags, entity clarity).
Is the SEO scan really free?
Yes, completely free and with no registration. You enter a URL and get an instant result. No credit card, no account, no obligations. It runs on our own code on Cloudflare’s network, not on a third-party SEO tool. We do store the address you enter and the scores in our own database, together with the page you came from, the referrer, the campaign code, your browser string and device type, so we know what’s already been measured. If you don’t enter an email address, we store nothing we could use to contact you. We never store an IP address. How long we keep what, and how you can have your input deleted, is set out in the privacy statement NL.
How does this scan differ from tools like Ahrefs or SEMrush?
Ahrefs and SEMrush offer extensive crawls of your entire site and backlink data, but those are subscriptions that run monthly; what they actually cost is on their own pricing page and changes regularly. Our scan focuses on the most important checks per page and gives you actionable advice straight away, in Dutch. For a deeper analysis of your whole site, you can always get in touch for a one-to-one conversation.
What is AI visibility and why does the scan check for it?
AI visibility determines whether systems such as ChatGPT, Google AI Overviews and Perplexity use your website as a source. We check whether you have structured data (Schema.org markup that tells machines what your page contains), whether your headings are clear enough for AI systems to recognise your expertise, and whether your Open Graph tags are set up correctly.
Can I scan any website, or only my own site?
You can scan any publicly accessible website. That's handy for seeing how competitors score and where you can outperform them. Only publicly available information is read, exactly as Google itself does.
What should I do after the scan?
Start with the red items (critical errors) and then work towards orange (warnings). Most improvements you can carry out yourself or have your web developer fix. Want help putting it into practice? Book a free call and we’ll go through the results together.
After the scan: need professional help?
What you get here is a starting point. You now know what’s going on and where to put your priority. Want someone to carry out the improvements for you and work on your visibility structurally? Then you can hire an SEO specialist NL with us directly. You get strategy, technology and content that deliver demonstrable results, measurable every month.