What Is Overview Eligibility?
Overview Eligibility describes whether a given webpage meets the conditions required for Google's AI to consider it as a potential source when generating an AI Overview. Just as not every query triggers an AI Overview, not every webpage is eligible to be cited as a source even when an AI Overview does appear for a query that webpage ranks for.
Several factors determine Overview Eligibility. First, the page must be indexed in Google's search index. Pages with a noindex directive, pages blocked by robots.txt, or pages that have not yet been crawled and indexed are ineligible.
Second, the page must allow access to Google's AI crawler, Google-Extended. Publishers who have specifically blocked Google-Extended in their robots.txt file signal that their content should not be used in AI products, including AI Overviews, making those pages ineligible even if they are indexed.
Beyond technical accessibility, Overview Eligibility is also influenced by content quality.
Pages with thin or duplicate content, pages that are penalised, pages that fail to load correctly, or pages that provide a poor user experience are less likely to be evaluated as eligible candidates by Google's AI systems.
Strong E-E-A-T signals and clear, accurate content improve a page's standing as an eligible source.
Topic sensitivity is another eligibility factor. Google applies stricter source selection criteria to sensitive topics such as health, legal, financial, and safety-related queries. Pages covering these areas under South African SEO strategies need to demonstrate particular authority and accuracy to maintain Overview Eligibility for those queries. Well-credentialed authors, transparent sourcing, and up-to-date information are important for pages in these categories.
Overview Eligibility In Practice
Consider a Pretoria-based financial planning practice that publishes regular content about retirement planning, tax-free savings accounts, and living annuities in South Africa. They want their articles to appear as AI Overview Sources for queries that trigger AI Overviews in their space.
An audit of their robots.txt file reveals that a previous attempt to block AI training bots inadvertently added a blanket Google-Extended disallow directive, blocking all of Google's AI features from accessing their content. Despite their pages ranking well organically, they have zero Overview Eligibility because Google's AI cannot access their content.
After updating their robots.txt to allow Google-Extended, their pages become eligible candidates for AI Overview citation. Their content on retirement annuity tax benefits and TFSA contribution limits is well-structured, factually accurate, and specifically tailored to South African regulations.
Within the following weeks, several of their pages begin appearing as cited sources in AI Overviews for relevant queries, significantly expanding their search visibility beyond their organic rankings alone.
What AI Overview eligibility is
AI Overview eligibility refers to the conditions a page must meet to be able to appear in, or be used as a source for, Google's AI Overviews, the AI-generated summaries Google shows at the top of some search results. Google has been clear about what this eligibility involves, and it is reassuringly simple: to be eligible to appear in Google's generative AI features, a page must be indexed and eligible to be shown in Google Search with a snippet, meeting Google's standard Search technical requirements. In other words, there is no separate AI-specific gate: eligibility for AI Overviews is essentially the same as eligibility for normal search results with a snippet. Google has explicitly stated that no special files (such as an llms.txt), no AI-specific schema or markup, and no separate technical steps are needed to be eligible for its AI features, the same indexing and snippet-eligibility that governs normal search governs AI Overview eligibility too. This matters because it dispels a lot of confusion and misinformation: businesses do not need to implement special AI-optimisation files or markup to be eligible, they need the same solid, indexable, snippet-eligible pages that good SEO already produces. Understanding AI Overview eligibility means understanding that being present in AI Overviews starts from being properly indexed and snippet-eligible in ordinary Google Search, which is the foundation, with content quality and clarity then influencing whether an eligible page is actually drawn upon.
Eligibility, controls and opting out
Because AI Overview eligibility rests on standard search indexing and snippet-eligibility, the controls that affect it are the same familiar ones, not AI-specific directives. A page that is indexed and snippet-eligible is eligible for AI Overviews; conversely, the standard directives that remove a page from search or suppress its snippet also affect AI-feature eligibility. Notably, Google uses the existing snippet controls: applying noindex removes a page from Google's index (and so from AI Overviews, since it is no longer eligible to be shown at all), while snippet-related directives like nosnippet, data-nosnippet and max-snippet, which control whether and how much of a page's content can be shown as a snippet, also govern whether the content can be used in AI Overviews, because AI-feature eligibility is tied to snippet-eligibility. So a business wanting to keep a page out of AI Overviews can use nosnippet to prevent its content being used, or noindex to remove it from search altogether, using the same controls it already knows. Google has also introduced a Search Console opt-out option at the property level to exclude a site from grounding AI Overviews and AI Mode without editing robots directives, giving a more direct control. Separately, Google's other AI systems (such as Gemini training and Vertex grounding outside Search) are governed by the Google-Extended robots.txt control, which is distinct from AI Overview eligibility within Search. For a South African business, the practical upshot is that being eligible for AI Overviews requires nothing special beyond good, indexable, snippet-eligible pages, and controlling or opting out of that use is done through the standard snippet directives, noindex, or the Search Console opt-out, rather than through any AI-specific markup or file.
FAQ
Can a South African website opt out of being used in AI Overviews?
Yes. Publishers can block Google's AI crawler by adding 'User-agent: Google-Extended Disallow: /' to their robots.txt file. This prevents Google's AI systems from using their content in AI Overviews and other generative AI features, while still allowing standard Googlebot to crawl for organic search results.
Does adding noindex to a page remove it from AI Overview Eligibility?
Yes. Pages with a noindex directive are not indexed by Google and therefore cannot be selected as AI Overview sources. For Overview Eligibility, the page must be indexable, crawlable by Google's AI crawler, and meet content quality standards. Noindexed pages are excluded from the AI Overview source pool.
Does adding noindex to a page remove it from AI Overview eligibility?
Yes. Noindex removes a page from Google's index, so it is no longer eligible to be shown in Google Search at all, and since AI Overview eligibility requires being indexed and snippet-eligible, a noindexed page cannot appear in or be used for AI Overviews. If you want to keep a page in search but out of AI features, use nosnippet instead, which suppresses snippet use (and thus AI-feature use) while keeping the page indexed.