Visibility Index: Meaning, Benchmarks and How to Improve It

The visibility indexThe visibility index is an SEO metric that condenses many of a domain's organic Google rankings into a single value. It shows whether search visibility is rising, stagnating or falling.Open glossary entry → shows how present a website is in organic Google search results. It condenses many rankings into a single metric and makes it visible whether your search engine optimization (SEO)Search Engine Optimization (SEO) covers all measures that help a website become more visible in unpaid (organic) search results.Open glossary entry → visibility is increasing, stagnating or declining.

For RankScan, this topic is closely related to the insight “Low search visibilitySearch visibility describes how present and findable a website is in the organic search results. It is not the same as traffic, but reflects theoretical findability.Open glossary entry →”. A low EAP score, RankScan’s metric for unused search potential, or a low visibility value means: your website has too little organic visibility compared with its potential. This may be caused by missing rankings, weak positions, small topic clustersA topic cluster is a group of thematically related pages in which a central pillar page and supporting detail pages link to each other. This creates a clear topical structure.Open glossary entry →, the wrong search intent, technical issues or strong competition.

The right interpretation is important:

The visibility indexIndexing is the step in which a search engine processes crawled content and decides whether a URL is added to the search index. Only indexed pages can appear in search results.Open glossary entry → is not a Google metric and not a revenue metric. It is an SEO compass.

It does not directly show how much traffic or revenue you generate. But it helps you understand developments, competitors and topic potential more clearly.

What Is the Visibility Index? #

The visibility index is a metric that combines organic Google rankings into one value. Instead of checking thousands of keywords individually, the index shows how visible a domain is overall.

SISTRIX describes the visibility index as a metric based on rankings for a fixed keyword set. The calculation follows three steps: data collection, weighting and aggregation into the index value.
Source: SISTRIX – Calculation of the Visibility Index

In simplified terms:

Visibility = rankings × search volume × expected click probability

A ranking in position 1 for a highly searched keyword contributes significantly more to the index than a ranking in position 28 for a niche keyword.

Is the Visibility Index a Google Metric? #

No.

There is no official Google visibility index. The visibility index is a tool metric. SISTRIX, XOVI, Semrush, Ahrefs and other providers use their own keyword sets, calculations and weightings.

That means:

• SISTRIX values are not directly comparable with Semrush values.
• A XOVI OVI is not the same as a SISTRIX SI.
• RankScan EAP follows its own visibility logic.
• The trend within the same system is what matters.

If you want to measure visibility, you should therefore define one primary system and track development there consistently.

What Does “Low Search Visibility” Mean in RankScan? #

The insight “Low search visibility” means: your website or a topic area achieves only low organic visibility in relation to the observed keyword set.

EAP represents a potential-based view: how much organic visibility or equivalent advertising potential do your rankings generate?

A low EAP score can mean:

• only a few keywords rank in the top 10,
• many rankings are only on page 2 or 3,
• the website mainly ranks for terms with low search volume,
• important money keywords are missing,
• topic clusters are too thin,
• competitors dominate the main terms,
• pages do not match search intent,
• technical issues slow down indexing or rankings,
• brand visibility is high, but non-brand visibility is weak.

Important: “Low search visibility” is not an error like a broken linkDead links are links pointing to a URL that is no longer reachable, usually returning status code 404. Internal dead links that lead users and crawlers into a dead end are especially problematic.Open glossary entry → (404) or a missing title tagThe title tag is an HTML element in the page that defines the page title. It appears in the browser tab and can be used as the clickable title in search results.Open glossary entry →. It is a strategic search visibility signal.

How Is a Visibility Index Calculated? #

The exact calculation differs from tool to tool. But the basic principle is similar.

1. Keyword Set #

The tool defines a large keyword set for a country or market. Google rankings are collected regularly for these keywords.

2. Ranking Position #

Every detected position is weighted. Position 1 receives much more weight than position 10, and position 10 much more than position 30.

3. Search Volume #

Keywords with higher search volume carry more weight.

4. Click Probability #

The expected click-through rateThe click-through rate (CTR) indicates how many users click a search result relative to the number of times it is shown (impressions). It reflects how appealing a listing appears in search.Open glossary entry → for each position is included. Top positions receive more weight because they are expected to generate significantly more clicks.

5. Aggregation #

The weighted values are aggregated into an index value.

SISTRIX explains this logic through the collection of ranking data, weighting of data points and aggregation of values into the visibility index.
Source: SISTRIX – Calculation of the Visibility Index

What Is a Good Visibility Index? #

The most common question is:

What is a good visibility index score?

The honest answer: there is no universally good score.

A local dentist, a Swiss B2B SaaS provider, a niche shop and a national publisher have completely different potential.

A good visibility index is therefore always relative to:

• industry,
• country,
• market size,
• business model,
• keyword set,
• competitors,
• brand demand,
• topic breadth,
• target audience.

The most important comparison question is:

How is our visibility developing compared with our most important competitors?

Not:

Is our absolute score high enough?

How to Interpret the Visibility Index Correctly #

1. Trend Instead of Individual Value #

A single value says little. The development matters:

• is the index rising?
• is it stagnating?
• is it declining?
• are there sudden jumps?
• does the trend correlate with Google updates or website changes?

2. Competition Instead of Average #

Compare yourself with the domains that truly compete for your target keywords.

Example:

Your SI: 0.12
Competitor A: 0.08
Competitor B: 0.15
Competitor C: 0.40

In that case, you are not “small”; you are in the midfield of your relevant market.

3. Separate Brand and Non-Brand #

Brand keywords can strongly distort visibility.

If many users search directly for your brand, your visibility value can increase without you becoming stronger for generic search terms.

You should therefore distinguish between:

• brand visibility,
• non-brand visibility,
• product/category visibility,
• guide/content visibility,
• local visibility,
• artificial intelligence (AI) visibility.

4. Analyse Topic Areas Separately #

A domain can look stable overall while individual topic clusters are losing visibility.

Example:

/guides/ is growing
/products/ is declining
/locations/ is stagnating

A good check therefore analyses not only domain visibility, but also visibility by topics, URLs, keywords and segments.

Visibility Index Is Not the Same as Traffic #

A key misconception: visibility is not the same as traffic.

A visibility index can increase while traffic barely grows if:

• rankings improve for keywords with low click-through rates,
• keywords are strongly informational,
• SERP features intercept clicks,
• AI Overviews provide answers directly,
• users only research briefly,
• your snippetsA snippet is the compact display of a result in the search results, usually made up of a title, URL and description. It is what users see before clicking.Open glossary entry → are weak.

Conversely, traffic can increase while the visibility index remains stable if:

• long-tail keywords perform better,
• seasonal demand increases,
• brand searches increase,
• individual transactional keywords generate more clicks,
• snippets have been improved.

For traffic changes, Google recommends analyzing performance data in Search Console and segmenting it by query, page, country and device, among other dimensions.
Source: Google Search Central – Debugging drops in Google Search traffic

Visibility, Clicks and AI Overviews #

Modern search changes how visibility should be interpreted.

A website can continue to rank but receive fewer clicks when search results are dominated by new elements:

• AI Overviews,
• featured snippetsA featured snippet is a highlighted answer excerpt that Google displays above the classic results. It answers a query directly and is often called position zero.Open glossary entry →,
• People Also AskPeople Also Ask (PAA) is a Google SERP element that shows related questions with expandable answers. It helps users explore a topic further and can affect clicks.Open glossary entry →,
• local packs,
• shopping results,
• video carousels,
• more ads,
• direct answers.

Google describes AI Overviews and AI Mode as search features where content from the web may be used and websites can still appear in these experiences.
Source: Google Search Central – AI features and your website

For RankScan, this means:

Visibility must now be understood more broadly than classic ranking positions.

Important questions:

• Is the domain cited in AI Overviews?
• Is the page visible in the classic top 10?
• Is the click-through rate (CTR) declining despite stable positions?
• Is a competitor named as a source?
• Are SERP features changing click distribution?

Why a Low Visibility Index Occurs #

A low visibility index can have many causes.

1. Too Few Top-10 Rankings #

Many keywords in positions 20 to 60 generate hardly any visibility. The biggest lever is often to move existing positions 8 to 20 into the top 5.

2. Wrong Keyword Coverage #

The website ranks for many niche terms, but not for the main topics with search volume.

3. Thin Topic Clusters #

Individual articles are often not enough. Strong visibility requires topic clusters with pillar pagesA pillar page is the central overview page of a topic cluster. It covers a subject broadly and links to in-depth detail pages, which in turn link back to it.Open glossary entry →, detail pages and internal linkingInternal linking refers to links that connect pages within the same website. They control how search engines and users find and thematically classify content.Open glossary entry →.

4. Weak Search Intent Match #

The page does not match the SERP type. A guide will struggle to rank for a clearly transactional keyword if Google prefers shops.

5. Technical Bottlenecks #

Indexing errors, incorrect canonicals, slow renderingJavaScript rendering is the process by which a browser or crawler executes JavaScript code to build the final, visible page. Content that is not already in the delivered HTML only appears after this step.Open glossary entry →, noindexnoindex is a robots directive telling search engines that a page should not appear in search results. The page must remain crawlable for it to work.Open glossary entry →, robots.txtThe robots.txt is a publicly accessible text file in a site's root directory. It tells crawlers which URLs they may fetch and therefore controls crawling.Open glossary entry → issues or broken links can limit visibility.

6. Strong Competitors #

Sometimes your own page is not bad, but competitors are better: more authority, better content, stronger internal linking or clearer snippets.

7. Brand Dependence #

The website has visibility only through brand searches, but hardly any generic non-brand rankings.

Prioritization: Which Visibility Problems Matter? #

The most important rule:

Do not optimize the visibility index as a number. Optimize the right rankings for the right topics.

Improving the Visibility Index: The Most Important Levers #

1. Prioritize Low-Hanging Fruits #

Look for keywords in positions 8 to 20 with relevant search volume.

These keywords already have traction and are often faster to improve than completely new topics.

Actions:

• update content,
• add stronger internal links,
• sharpen title and H1The H1 is a web page's main heading. It names the central topic, is visible to users and should generally appear only once per page.Open glossary entry →,
• check search intent,
• improve the snippet,
• add missing sections,
• check structured dataSchema markup is code that describes a page's content in a structured way, so search engines understand it not just as text but as clearly classified information.Open glossary entry →.

2. Build Topic Clusters #

Individual articles rarely create sustainable visibility on their own.

Build clusters:

Pillar page: Improve Google rankings
Detail article: Optimize title tags
Detail article: Write meta descriptions
Detail article: Detect content decayContent decay (stale content) refers to content that is outdated factually, chronologically or strategically and no longer reliably satisfies the current search intent.Open glossary entry →
Detail article: Resolve keyword cannibalizationKeyword cannibalization occurs when several pages of the same website target the same search intent and thereby compete internally for the same rankings. Google then fails to identify a clear main page.Open glossary entry →
Detail article: Check technical SEO

This creates topical depth and internal relevance.

3. Match Search Intent More Precisely #

Check the current SERP:

• Are the results guides?
• Product pages?
• Comparison pages?
• Local results?
• Videos?
• Tools?
• Forums?
• AI Overviews?

If your page does not match the dominant format, improving rankings will be difficult.

4. Improve Snippets #

Visibility only matters if users click.

Check:

• title tag,
• meta descriptionThe meta description is an HTML element in the page that briefly summarises the page's content. Google can display it as the description in the search result.Open glossary entry →,
• H1,
• rich resultRich results are enhanced displays in Google, for example with ratings, prices or breadcrumbs, which can be enabled by suitable structured data.Open glossary entry → potential,
• structured data,
• freshnessFreshness describes how current a piece of content is relative to the search intent. It is not equally important for every query.Open glossary entry → signals,
• value proposition.

5. Ensure Technical Hygiene #

Check regularly:

• indexability,
• canonicals,
• 404s,
• redirectsA redirect forwards users and search engines from one URL to another. It can be permanent (301) or temporary (302) and transfers signals to the target URL.Open glossary entry →,
• page speed,
• Core Web VitalsCore Web Vitals are a set of Google metrics that measure real-world user experience in the areas of loading performance, interactivity and visual stability.Open glossary entry →,
• internal linking,
• sitemapAn XML sitemap is a machine-readable file listing a website's important URLs. It helps search engines discover content more efficiently but does not replace internal linking or guarantee indexing.Open glossary entry →,
• robots.txt,
• JavaScript rendering.

6. Develop Brand and Non-Brand Separately #

Brand visibility is valuable, but it often reflects demand that already exists.

Non-brand visibility shows whether your website attracts new users through generic topics.

Actions for non-brand:

• keyword clusters,
• guides,
• comparison pages,
• category optimization,
• internal linking,
• Experience, ExpertiseExpertise is the subject-matter competence behind a piece of content. It is the second E in E-E-A-T and should be visible through author details and supporting evidence.Open glossary entry →, Authoritativeness and Trust (E-E-A-TE-E-A-T stands for Experience, Expertise, Authoritativeness and Trustworthiness. It is a quality framework from Google's Search Quality Rater Guidelines, not a single technical ranking factor.Open glossary entry →) signals,
• digital public relations (PR).

What to Do After a RankScan Finding #

If RankScan reports “Low search visibility”, you should proceed systematically.

Step 1: Determine the Segment #

Check where the low value occurs:

• entire domain,
• individual topic,
• directory,
• landing page group,
• product category,
• non-brand keywords,
• local market,
• AI visibilityAI Visibility describes whether and how visible a brand, website or person is in AI-generated answers. It measures mention, position, description and source linking across multiple platforms and prompts.Open glossary entry →.

Step 2: Compare Competitors #

Compare only relevant competitors:

• direct SEO competitors,
• SERP competitors,
• industry portals,
• shops,
• local providers,
• comparison platforms.

Ask:

Which domains are gaining visibility for our target topics — and why?

Step 3: Analyse Keyword Distribution #

Check:

• how many keywords are in the top 3,
• top 10,
• positions 11–20,
• positions 21–50,
• not ranking.

The best lever is often keywords just outside the top 10.

Step 4: Find Topic Gaps #

Compare with competitors:

• Which topics are missing?
• Which pages rank for competitors?
• Are any formats missing?
• Are product categories missing?
• Are guides missing?
• Is there a need for frequently asked questions (FAQ) or comparisons?

Step 5: Check Technical Bottlenecks #

Before creating new content:

• Are important pages indexable?
• Are canonicals correct?
• Are there 404s?
• Are there duplicate titles?
• Are H1s or meta descriptions missing?
• Is internal linking strong enough?
• Are important pages too deep in the site structure?

Step 6: Prioritize Actions #

Prioritize by potential:

high search volume + position 8–20 + business relevance = optimize first

Then:

• expand topic clusters,
• update content,
• strengthen internal links,
• improve snippets,
• fix technical errors,
• create new pages only where real topic gaps exist.

What a Good Visibility Check Looks At #

A good search visibility check goes beyond a single number.

A good check reviews:

• domain visibility,
• topic visibility,
• URL visibility,
• keyword positions,
• EAP score,
• brand vs. non-brand,
• visibility by country,
• visibility by device,
• visibility by page type,
• rankings just outside the top 10,
• SERP features,
• AI OverviewAn AI answer box is the summarized, directly formulated answer from an AI system that a user sees instead of a classic results list. Brands, products and source links may appear in it or be absent.Open glossary entry → presence,
• competitor distance,
• trend over time,
• technical blockers,
• content decay,
• cannibalization,
• snippet quality,
• internal linking.

This turns “Low search visibility” from an abstract metric into a concrete optimization plan.

Example: Many Rankings, but a Low EAP Score #

Initial Situation #

A B2B provider ranks for many long-tail keywords, but the RankScan EAP score remains low.

Analysis:

Top 3: 4 keywords
Top 10: 18 keywords
Positions 11–20: 78 keywords
Positions 21–50: 180 keywords

The website has many rankings, but little visibility in the positions with high click probability.

Solution #

1. Prioritize keywords in positions 8–20.
2. Update existing pages.
3. Strengthen internal links to the most important target pages.
4. Improve titles and meta descriptions.
5. Check search intent against the current top 10.
6. Expand topic clusters.
7. Fix technical bottlenecks such as missing H1s, canonicals or 404s.

Result #

The number of keywords does not need to increase dramatically. What matters is that relevant keywords move from positions 11–20 into the top 10 and ideally into the top 3.

Common Interpretation Mistakes #

Mistake 1: Confusing Visibility Index with Revenue #

A high SI is not a business model. What matters is whether visibility brings relevant users.

Mistake 2: Comparing Tools Directly #

A SISTRIX value and a Semrush value are different metrics. Compare trends within the same tool.

Mistake 3: Overvaluing Brand Visibility #

Brand rankings are valuable, but they often show existing demand. Non-brand visibility is important for growth.

Mistake 4: Misjudging Small Niches #

In very small B2B niches, a low SI can be normal. In that case, project-specific keyword sets are more meaningful.

Mistake 5: Ignoring AI Overviews #

Classic rankings are no longer always enough to explain click development.

Mistake 6: Creating Too Much New Content #

More pages do not automatically increase visibility. Often, it is better to improve and consolidate existing pages.

Checklist: How to Analyse Visibility Correctly #

Use this checklist:

• Which tool is your primary measurement system?
• How is the trend developing over 3, 6 and 12 months?
• How does the comparison with direct competitors look?
• How high is brand vs. non-brand visibility?
• Which topic clusters contribute to visibility?
• Which keywords are in positions 8–20?
• Which important keywords do not rank at all?
• Which pages are losing visibility?
• Are there technical blockers?
• Is there content decay?
• Is there cannibalization?
• Are there SERP features or AI Overviews?
• Do visibility, clicks and leads align?
• Which actions have the highest potential?

In addition, improving Google rankings, Generative Engine Optimization and AI reputation and share of voice help narrow down the cause and prioritize the next SEO actions.

Conclusion: Visibility Is a Compass, Not a Goal in Itself #

The visibility index is a useful metric for understanding SEO development, competitive position and topic potential. But it is not an official Google metric and not a direct revenue indicator.

The RankScan insight “Low search visibility” should therefore be understood as a signal:

• Where is our search presence weak?
• Which topics have potential?
• Which rankings are close to breaking through?
• Where are technology, content or search intent blocking progress?
• How far away are we from the competition?

The best approach is:

1. segment visibility,
2. compare competitors,
3. separate brand and non-brand,
4. prioritize keywords in positions 8–20,
5. resolve technical bottlenecks,
6. strengthen topic clusters,
7. improve content and snippets,
8. measure development over time.

This turns the visibility index into a practical steering instrument — not an isolated number in a report.

Sources and Further Reading #

• SISTRIX – Calculation of the Visibility Index
• SISTRIX – Visibility Index
• Google Search Central – Debugging drops in Google Search traffic
• Google Search Central – AI features and your website