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Free tool · SEO + AI search visibility · Instant
SEOMA Signal Score: Your SEO and AI Search Visibility, Scored 0–100
The Signal Score measures how likely search engines and AI assistants are to find, trust and recommend your website. Enter a domain and in under a minute you get a 0–100 score, an Authority Index, four readiness pillars and a list of the specific checks you passed and failed. It runs on real data: the Common Crawl link graph, Google’s Chrome UX Report, global traffic rankings, the Internet Archive, Wikipedia and Wikidata, plus a live crawl of your pages.
- Overall score, Authority Index and four readiness pillars
- Real link-graph and real-user data, not guesses
- Every check shown with what to fix and why
- Free, instant, no email required
What it is
One Number for Organic and AI Search Visibility
Most SEO scores grade a single page against a checklist. A page can pass every item and still be invisible, because the thing that decides whether Google ranks you or ChatGPT cites you is mostly off the page: who links to you, whether real people visit, whether search engines and knowledge bases recognize your brand as an entity. The SEOMA Signal Score measures both halves, how authoritative your site is and how ready it is to be found, and combines them into one number you can track over time.
We built it because our clients kept asking the same question in two forms: why don’t we rank on Google? and why doesn’t ChatGPT mention us? The answers overlap far more than most agencies admit. Search engines and large language models both lean on the same signals: links from trusted sites, consistent entity data, crawlable and fast pages, and content that answers questions directly. The Signal Score checks those signals in one pass and shows the result in plain language.
It is not a ranking report. It does not know where you rank for a given keyword or how many visitors you get. Those depend on paid tools and on access to your analytics, and they belong in a full SEO audit. What it does tell you, quickly and for free, is whether the foundations that rankings and AI citations depend on are in place.
What You Get
- A 0–100 Signal Score and a band: Invisible, Emerging, Competitive or Chosen
- An Authority Index from real link and traffic data
- Organic, AI, Entity and Technical readiness pillars
- Each check with the fix and the reason it matters
- A confidence level and the list of data sources used
How it is calculated
Authority and Readiness, Weighted the Way Search Works
The score has two halves. Authority is how much the wider web already trusts your domain. Readiness is how well your site is built to be crawled, understood and cited. Readiness only counts in full once authority reaches 40, so a perfect site that nobody links to cannot score highly. Ahrefs’ Domain Rating and similar metrics behave the same way.
| Component | Weight | What it measures |
|---|---|---|
| Authority Index | 50% | Link authority, referring domains, real-user reach, traffic rank, archive history, Wikipedia and Wikidata presence, domain age |
| Organic readiness | 30% of readiness | Indexability, titles and descriptions, headings, internal links, sitemaps, canonical tags, content depth |
| AI readiness | 25% of readiness | Question-led headings, direct answers, FAQ markup, llms.txt, AI crawler access, citable facts and sources |
| Entity readiness | 20% of readiness | Organization and LocalBusiness schema, consistent name, address and phone, sameAs profiles, knowledge-graph signals |
| Technical readiness | 25% of readiness | HTTPS, security headers, real-user Core Web Vitals, mobile rendering, broken pages, redirects |
The full formula is Signal Score = 50% × Authority + 50% × Readiness × (0.4 + 0.6 × min(1, Authority ÷ 40)). Readiness is a weighted geometric mean of the four pillars, so one very weak pillar pulls the score down more than a simple average would. Critical failures cap the total: a site that blocks search engines, has no HTTPS or returns errors on a large share of its pages cannot score above a fixed ceiling, however good the rest looks.
Authority Index
Real Data Sources, not a Guess
Authority is the hardest thing to fake and the most important thing to measure honestly. Every authority check uses a public, independent data source. If a source is unavailable, that check is skipped and left out of the average. It is never filled in with an estimate.
| Signal | Weight | Source |
|---|---|---|
| Link authority | 30 | Open PageRank, computed on the Common Crawl link graph |
| Referring domains | 10 | Open PageRank: unique websites linking to you, on a logarithmic curve |
| Real-user reach | 15 | Google Chrome UX Report: whether enough real Chrome users visit your site for Google to publish data on it |
| Global traffic rank | 15 | The Tranco top-one-million list of most-visited domains |
| Archive history | 10 | Days captured by the Internet Archive in the last 12 months |
| Wikipedia references | 10 | Links to your domain from Wikipedia articles |
| Knowledge graph | 5 | A Wikidata entity listing your site as its official website |
| Domain age | 5 | Registration date from RDAP, the successor to WHOIS |
This is why a new local business and a national brand score very differently even when their homepages look equally polished. In our test cases, a small site with no link data scores in the mid-teens, a small site with modest links and real Chrome traffic scores in the high forties to high fifties, and a major brand scores in the eighties. The score is designed to separate those cases, not to make everyone feel good.
Bands
What Your Score Means
Bands are assigned once all four readiness pillars and the Authority Index have been measured. If something could not be measured, the result is shown as preliminary instead.
0–39
Invisible
Search engines and AI assistants have little reason to surface you. Usually a mix of low authority and missing foundations: schema, crawlable pages, clear answers.
40–69
Emerging
The foundations are partly in place and you appear for some searches. The gap is usually authority: links, mentions and entity signals that build trust.
70–89
Competitive
You can win rankings and AI citations in your market. The work now is depth and consistency: more cited content, more trusted references.
90–100
Chosen
Sites search engines and AI assistants actively choose to show and cite. Very few domains reach this band, and it takes years of earned authority.
How to use it
From Score to Plan in Four Steps
The score is a starting point. Here is how we recommend using it.
Score Your Own Domain
Enter your domain above. The scan crawls a sample of your pages, checks your structured data and queries the authority sources. Most scans finish in under a minute.
Fix the Failed Checks First
Each failed check comes with the fix and the reason it matters. Technical and entity fixes such as schema, sitemaps, headings and security headers are often quick wins you can make yourself.
Score Your Competitors
Run the two or three sites that outrank you. The difference in Authority Index usually explains most of the ranking gap, and the pillar scores show where they are better prepared for AI search.
Re-Score Every Month
Authority moves slowly, readiness moves fast. Track both. If readiness is high and authority is flat, the next investment is links, mentions and digital PR, not more on-page tweaks.
Honest limits
What the Signal Score Does not Measure
A score you can take seriously has to be clear about what it leaves out. Every result lists these limits along with a confidence level: high when both the link graph and Chrome real-user data were measured, medium when one was, and low when only public proxies were available.
- Keyword rankings and organic traffic: these need Search Console access or a paid rank tracker
- Live AI answer citations: whether ChatGPT, Gemini or Perplexity cite you today for a specific question
- Google Business Profile reviews, rating and map-pack position
- Individual backlinks and their quality: the score uses aggregate link-graph data, not a backlink audit
Those are exactly the things a GEO audit and an SEO audit cover. If your score raises questions, that is the natural next step.
SEO and AI search
Why One Score Covers Both Google and AI Assistants
AI search engines do not start from nothing. Google’s AI Overviews are built on Google’s index. ChatGPT search, Perplexity and Copilot retrieve live web results and then decide which sources to cite. In every case, a page has to be crawlable, indexable and trusted before it can be quoted. That is why our AI search optimization (GEO) services start from the same technical and authority foundations as our SEO services.
What changes is the last mile. AI assistants favour pages that answer a question directly in the first sentence, back up claims with sources, use question-shaped headings and describe the business consistently across the web. The AI readiness and Entity pillars of the Signal Score measure exactly those things, so you can see whether you are ready for answer engine optimization or still need to fix the basics.
For local businesses, the same logic applies to the map pack and to assistants answering “best near me” questions. Consistent name, address and phone details, LocalBusiness schema and a strong Google Business Profile carry a lot of weight. Our local SEO services focus there.
Who it is for
Built for Owners, Marketers and Agencies
Anyone who needs a fast, honest read on a website’s search visibility can use the Signal Score.
Business Owners
See whether your website is helping or holding you back before you spend money on SEO, ads or a redesign. The checks are written in plain language, so you know what to ask your web team for.
Marketing Teams
Benchmark your domain against competitors, report progress to leadership with one number, and use the failed checks as a prioritized backlog for your developers and content writers.
Agencies and Consultants
Qualify prospects in a minute and show them where they stand with data from independent sources. The methodology is published, so nobody has to take a black-box number on trust.
Free Signal Score
Check Another Domain
Score a competitor, a client or a site you are thinking of buying. It is free and instant, and no email is required.
Related services
Turn Your Score into Results
FAQ
Signal Score Questions
What is the SEOMA Signal Score?
The SEOMA Signal Score is a free 0–100 measure of how visible a website is likely to be in Google and in AI assistants such as ChatGPT. It combines an Authority Index, built from real link-graph, Chrome user and traffic data, with four readiness pillars: organic, AI, entity and technical.
Is the Signal Score free?
Yes. The score is free and instant, and you do not need to enter an email address. You can optionally request a detailed improvement plan by email.
How accurate is the Signal Score?
Authority uses independent public data: Open PageRank on the Common Crawl link graph, Google’s Chrome UX Report, the Tranco list, the Internet Archive, Wikipedia and Wikidata. Each result shows a confidence level and the sources used. Checks that could not be measured are skipped rather than estimated.
Why is my score low when my website looks good?
Half of the score is authority: how much the wider web links to and visits your site. A well-built new site with few links will score low until it earns that authority. Readiness only counts in full once authority reaches 40.
How is the Signal Score different from Domain Authority or Domain Rating?
Domain Authority and Domain Rating measure links only. The Signal Score also measures real-user reach, knowledge-graph presence and how ready your pages are for organic and AI search, and it explains each check.
How can I improve my Signal Score?
Fix the failed readiness checks first, as they are usually quick. Then build authority through links, digital PR, consistent business listings and content other sites want to cite. SEOMA’s SEO and GEO services do both.
Free Signal Score
Want a Plan to Raise Your Score?
Book a call and a SEOMA strategist will walk through your Signal Score, compare it with your competitors and show you which fixes will move it most.