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Visibility Readout

app.opaque-spa.example/

LLM Invisible

  • CSR
  • blocks all
  • no llms.txt
  • no structured data

Scanned Jun 13, 2026

Category breakdown

Bar width = composite weight · fill = score

  1. Structured Data & Machine Readability25%
    5/45
  2. Content Structure & Semantic Clarity20%
    8/50
  3. Crawlability & LLM Access20%
    10/55
  4. Technical Performance15%
    7/35
  5. E-E-A-T Signals10%
    2/30
  6. Semantic Metadata & Entity Optimization10%
    4/30
AI-Specific Emerging Standards+0 / 21 bonus

Findings 5

  1. Critical

    Empty HTML shell (CSR)

    The page ships an empty shell hydrated entirely by JavaScript; crawlers see nothing.

    <div id="root"></div>
    −10Crawlability & LLM Access
  2. Critical

    robots.txt blocks AI crawlers

    GPTBot, ClaudeBot and others are disallowed.

    −10Crawlability & LLM Access
  3. High

    No structured data

    No JSON-LD, microdata, or RDFa anywhere on the page.

    −10Structured Data & Machine Readability
  4. High

    Generic page title

    Title is "App" — not descriptive or entity-rich.

    −5Semantic Metadata & Entity Optimization
  5. Medium

    Most images lack alt text

    Only 40% of images have descriptive alt text.

    −3Semantic Metadata & Entity Optimization

Recommendations

  1. Pre-render or SSR the app

    +2 pts

    Serve real HTML so crawlers and LLMs can read the content.

  2. Allow AI crawlers in robots.txt

    +2 pts

    Remove disallow rules for GPTBot, ClaudeBot, PerplexityBot, and friends.

  3. Add a descriptive title and meta description

    +1.7 pts

    Give every page an entity-rich title and a conversational description.