> ## Documentation Index
> Fetch the complete documentation index at: https://wiki.platelunchcollective.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Indexability

> Indexability is whether a page can be discovered, crawled, and added to a search engine's or AI system's index.

*Technical implementation* · *AI Search Infrastructure*

## Definition

Indexability is whether a page can be discovered, crawled, and added to a search engine's or AI system's index. Pages blocked by robots.txt, marked noindex, or behind authentication are generally inaccessible to crawlers regardless of their content quality. Pages rendered only in client-side JavaScript may also be inaccessible to many AI crawlers, though Googlebot can render JavaScript.

## Why It Matters for AI Search

A page that cannot be indexed cannot be cited. Indexability is the most fundamental technical requirement in AI SEO — it precedes all content and [entity optimization](https://www.platelunchcollective.com/services/entity-seo). Common indexability failures include overly restrictive robots.txt files, reliance on JavaScript rendering, accidental noindex tags, and authentication walls on content that should be public.

## Related Terms

<CardGroup cols={2}>
  <Card title="AI Crawler" href="/ai-search-glossary/ai-crawler" />

  <Card title="Crawl budget" href="/ai-search-glossary/crawl-budget" />

  <Card title="Technical SEO" href="/ai-search-glossary/technical-seo" />

  <Card title="Machine readability" href="/ai-search-glossary/machine-readability" />

  <Card title="HTML-first development" href="/ai-search-glossary/html-first-development" />
</CardGroup>

## Relevant Plate Lunch Collective Services

[AI SEO](https://www.platelunchcollective.com/services/ai-seo)