Analyzed URL

https://spyonweb.net/

Analyze another URL

AI-Ready Score

81 / B

Good

out of 100

Token Savings

HTML tokens 11.017
Markdown tokens 166
Savings 98%

Score Breakdown

Semantic HTML 96/100
Content Efficiency 70/100
AI Discoverability 57/100
Structured Data 100/100
Accessibility 100/100

Your page has a low ratio of actual content to total HTML. Much of the page weight is markup, scripts, or styles rather than content.

How to implement

Move CSS to external stylesheets, remove inline styles, minimize JavaScript, and ensure the HTML focuses on content structure.

Your site doesn't support Markdown for Agents. This Cloudflare standard lets AI agents request content in markdown format, reducing token usage by ~80%.

How to implement

Implement one or more: (1) Respond to Accept: text/markdown with markdown content. (2) Serve .md URLs (e.g., /page.md). (3) Add <link rel="alternate" type="text/markdown"> tags. (4) Add Link HTTP headers for markdown discovery.

Your robots.txt blocks some AI bots (GPTBot, ClaudeBot, PerplexityBot). This prevents AI agents from indexing your content.

How to implement

Update your robots.txt to allow AI bots. Add explicit Allow rules for GPTBot, ClaudeBot, and PerplexityBot.

Markdown tokens: 166
## Map the digital footprint of any domain.

SpyOnWeb correlates domains, Analytics snippets, AdSense publishers, nameservers and IP addresses so you can discover hidden relationships in seconds.

132,745 Domains

99,299 Analytics

40,179 AdSense

41,645 Nameservers

129,054 IPs

25 Technologies

120,894 SSL Active

### Fast reconnaissance

Feed a single domain or identifier and receive correlated assets in real time. Perfect for security assessments, competitive research or due diligence.

### Actionable context

See shared Analytics, AdSense, nameservers and historic IPs in one view to understand infrastructure reuse and uncover connected entities quickly.

### Deployment friendly

Designed for shared hosting: pure PHP, MySQL and no external APIs required. Install through the web wizard and manage data with the built-in admin panel.
SpyOnWeb — Domain Intelligence & Reverse Lookup Tool

[SpyOnWeb](https://spyonweb.net/)

Toggle color theme Language English Español

# Map the digital footprint of any domain.

SpyOnWeb correlates domains, Analytics snippets, AdSense publishers, nameservers and IP addresses so you can discover hidden relationships in seconds.

Lookup query  Search

Examples: stackscale.com, UA-123456-1, pub-1234567890123456, ns1.example.net

132,745 Domains

99,299 Analytics

40,179 AdSense

41,645 Nameservers

129,054 IPs

25 Technologies

120,894 SSL Active

### Fast reconnaissance

Feed a single domain or identifier and receive correlated assets in real time. Perfect for security assessments, competitive research or due diligence.

### Actionable context

See shared Analytics, AdSense, nameservers and historic IPs in one view to understand infrastructure reuse and uncover connected entities quickly.

### Deployment friendly

Designed for shared hosting: pure PHP, MySQL and no external APIs required. Install through the web wizard and manage data with the built-in admin panel.

Upload this file as /index.md on your server so AI agents can access a clean version of your page. You can also configure Accept: text/markdown content negotiation to serve it automatically.

Our recommendation

Download llms.txt
# SpyOnWeb

> Find domain relationships, shared Analytics & AdSense codes, IP addresses, nameservers and web technologies. Free reverse lookup tool.

## Documentation
- [FAQ](https://spyonweb.net/faq)

## Main
- [SpyOnWeb — Domain Intelligence & Reverse Lookup Tool](https://spyonweb.net/): Find domain relationships, shared Analytics & AdSense codes, IP addresses, nameservers and web technologies. Free rever…
- [About Us](https://spyonweb.net/about)
- [Top Lists](https://spyonweb.net/top)

## Support
- [FAQ](https://spyonweb.net/faq)

Full llms.txt requires domain-wide analysis (coming soon)

Upload this file to https://spyonweb.net/llms.txt at the root of your domain. AI agents like ChatGPT, Claude, and Perplexity check this file to understand your site structure.

This site already has a llms.txt file.

Valid format
# SpyOnWeb — Domain Intelligence Platform

> SpyOnWeb is a domain intelligence tool that reveals relationships between websites through shared Analytics codes, AdSense publishers, IP addresses, nameservers, SSL certificates and web technologies.

## Main Pages

- [Home](https://spyonweb.net/): Search any domain, IP, or identifier
- [About](https://spyonweb.net/about): Platform overview and capabilities
- [FAQ](https://spyonweb.net/faq): Common questions answered
- [Top Rankings](https://spyonweb.net/top): Most prevalent technologies, SSL issuers, analytics codes

## Lookup Types

- Domain profile: `/domain/{name}` — Full domain report with IP, technologies, associations
- IP lookup: `/ip/{address}` — All domains hosted on an IP address
- Analytics: `/analytics/{code}` — Domains sharing a Google Analytics code
- AdSense: `/adsense/{code}` — Domains from the same AdSense publisher
- Nameserver: `/nameserver/{ns}` — Domains delegated to a DNS nameserver
- Technology: `/technology/{name}` — Domains using a specific technology
- SSL Issuer: `/ssl/{issuer}` — Domains with certificates from an issuer

## API

JSON API available at `/api/v1/` for programmatic access. API keys generated from user dashboard.

Semantic HTML

Uses article or main element (100/100)

Has both <article> and <main>

Proper heading hierarchy (85/100)

1 heading level skip(s)

Uses semantic HTML elements (100/100)

13 semantic elements, 17 divs (ratio: 43%)

Meaningful image alt texts (100/100)

No images found

Low div nesting depth (100/100)

Avg div depth: 0.1, max: 1

Content Efficiency

Good token reduction ratio (100/100)

98% token reduction (HTML→Markdown)

Good content-to-noise ratio (0/100)

Content ratio: 2.6% (1265 content chars / 47948 HTML bytes)

Minimal inline styles (100/100)

0/127 elements with inline styles (0.0%)

Reasonable page weight (100/100)

HTML size: 47KB

AI Discoverability

Has llms.txt file (100/100)

llms.txt exists and is valid

Has robots.txt file (100/100)

robots.txt exists

Robots.txt allows AI bots (34/100)

2/3 AI bots blocked: ClaudeBot, GPTBot

Has sitemap.xml (100/100)

Sitemap found

Markdown for Agents support (0/100)
&#10007; Accept: text/markdown &#10007; .md URL &#10007; <link> tag &#10007; Link header
Has Content-Signal (robots.txt or HTTP headers) (60/100)
&#10003; robots.txt &#10007; HTTP header &#10003; Policy

Structured Data

Has Schema.org / JSON-LD (100/100)

JSON-LD found: WebSite, Organization

Has Open Graph tags (100/100)

All OG tags present

Has meta description (100/100)

Meta description: 134 chars

Has canonical URL (100/100)

Canonical URL present

Has lang attribute (100/100)

lang="en"

Accessibility

Content available without JavaScript (100/100)

Content available without JavaScript

Reasonable page size (100/100)

Page size: 47KB

Content appears early in HTML (100/100)

Main content starts at 9% of HTML

{
  "url": "https://spyonweb.net/",
  "timestamp": 1771425349461,
  "fetch": {
    "mode": "simple",
    "timeMs": 51,
    "htmlSizeBytes": 47948,
    "supportsMarkdown": false,
    "markdownAgents": {
      "contentNegotiation": false,
      "mdUrl": {
        "found": false,
        "url": null
      },
      "linkTag": {
        "found": false,
        "url": null
      },
      "linkHeader": {
        "found": false,
        "url": null
      },
      "responseHeaders": {
        "contentSignal": null,
        "xMarkdownTokens": null,
        "vary": null
      },
      "frontmatter": {
        "present": false,
        "fields": [],
        "level": "none"
      },
      "level": "none"
    },
    "statusCode": 200
  },
  "extraction": {
    "title": "SpyOnWeb — Domain Intelligence & Reverse Lookup Tool",
    "excerpt": "Find domain relationships, shared Analytics & AdSense codes, IP addresses, nameservers and web technologies. Free reverse lookup tool.",
    "byline": null,
    "siteName": "SpyOnWeb",
    "lang": "en",
    "contentLength": 1265,
    "metadata": {
      "description": "Find domain relationships, shared Analytics & AdSense codes, IP addresses, nameservers and web technologies. Free reverse lookup tool.",
      "ogTitle": "SpyOnWeb — Domain Intelligence & Reverse Lookup Tool",
      "ogDescription": "Find domain relationships, shared Analytics & AdSense codes, IP addresses, nameservers and web technologies. Free reverse lookup tool.",
      "ogImage": "https://spyonweb.net/assets/images/og-default.png",
      "ogType": "website",
      "canonical": "https://spyonweb.net/",
      "lang": "en",
      "schemas": [
        {
          "@context": "https://schema.org",
          "@type": "WebSite",
          "name": "SpyOnWeb",
          "url": "https://spyonweb.net/",
          "description": "Find domain relationships, shared Analytics & AdSense codes, IP addresses, nameservers and web technologies. Free reverse lookup tool.",
          "inLanguage": "en",
          "potentialAction": {
            "@type": "SearchAction",
            "target": "https://spyonweb.net/?query={search_term_string}",
            "query-input": "required name=search_term_string"
          }
        },
        {
          "@context": "https://schema.org",
          "@type": "Organization",
          "name": "SpyOnWeb",
          "url": "https://spyonweb.net/",
          "description": "Domain intelligence platform for discovering relationships between websites through shared identifiers and infrastructure."
        }
      ],
      "robotsMeta": "index, follow",
      "author": null,
      "generator": null,
      "markdownAlternateHref": null
    }
  },
  "markdown": "## Map the digital footprint of any domain.\n\nSpyOnWeb correlates domains, Analytics snippets, AdSense publishers, nameservers and IP addresses so you can discover hidden relationships in seconds.\n\n132,745 Domains\n\n99,299 Analytics\n\n40,179 AdSense\n\n41,645 Nameservers\n\n129,054 IPs\n\n25 Technologies\n\n120,894 SSL Active\n\n### Fast reconnaissance\n\nFeed a single domain or identifier and receive correlated assets in real time. Perfect for security assessments, competitive research or due diligence.\n\n### Actionable context\n\nSee shared Analytics, AdSense, nameservers and historic IPs in one view to understand infrastructure reuse and uncover connected entities quickly.\n\n### Deployment friendly\n\nDesigned for shared hosting: pure PHP, MySQL and no external APIs required. Install through the web wizard and manage data with the built-in admin panel.\n",
  "fullPageMarkdown": "SpyOnWeb — Domain Intelligence & Reverse Lookup Tool\n\n[SpyOnWeb](https://spyonweb.net/)\n\nToggle color theme Language English Español\n\n# Map the digital footprint of any domain.\n\nSpyOnWeb correlates domains, Analytics snippets, AdSense publishers, nameservers and IP addresses so you can discover hidden relationships in seconds.\n\nLookup query  Search\n\nExamples: stackscale.com, UA-123456-1, pub-1234567890123456, ns1.example.net\n\n132,745 Domains\n\n99,299 Analytics\n\n40,179 AdSense\n\n41,645 Nameservers\n\n129,054 IPs\n\n25 Technologies\n\n120,894 SSL Active\n\n### Fast reconnaissance\n\nFeed a single domain or identifier and receive correlated assets in real time. Perfect for security assessments, competitive research or due diligence.\n\n### Actionable context\n\nSee shared Analytics, AdSense, nameservers and historic IPs in one view to understand infrastructure reuse and uncover connected entities quickly.\n\n### Deployment friendly\n\nDesigned for shared hosting: pure PHP, MySQL and no external APIs required. Install through the web wizard and manage data with the built-in admin panel.\n",
  "markdownStats": {
    "images": 0,
    "links": 0,
    "tables": 0,
    "codeBlocks": 0,
    "headings": 4
  },
  "tokens": {
    "htmlTokens": 11017,
    "markdownTokens": 166,
    "reduction": 10851,
    "reductionPercent": 98
  },
  "score": {
    "score": 81,
    "grade": "B",
    "dimensions": {
      "semanticHtml": {
        "score": 96,
        "weight": 20,
        "grade": "A",
        "checks": {
          "uses_article_or_main": {
            "score": 100,
            "weight": 20,
            "details": "Has both <article> and <main>"
          },
          "proper_heading_hierarchy": {
            "score": 85,
            "weight": 25,
            "details": "1 heading level skip(s)"
          },
          "semantic_elements": {
            "score": 100,
            "weight": 20,
            "details": "13 semantic elements, 17 divs (ratio: 43%)"
          },
          "meaningful_alt_texts": {
            "score": 100,
            "weight": 15,
            "details": "No images found"
          },
          "low_div_nesting": {
            "score": 100,
            "weight": 20,
            "details": "Avg div depth: 0.1, max: 1"
          }
        }
      },
      "contentEfficiency": {
        "score": 70,
        "weight": 25,
        "grade": "C",
        "checks": {
          "token_reduction_ratio": {
            "score": 100,
            "weight": 40,
            "details": "98% token reduction (HTML→Markdown)"
          },
          "content_to_noise_ratio": {
            "score": 0,
            "weight": 30,
            "details": "Content ratio: 2.6% (1265 content chars / 47948 HTML bytes)"
          },
          "minimal_inline_styles": {
            "score": 100,
            "weight": 15,
            "details": "0/127 elements with inline styles (0.0%)"
          },
          "reasonable_page_weight": {
            "score": 100,
            "weight": 15,
            "details": "HTML size: 47KB"
          }
        }
      },
      "aiDiscoverability": {
        "score": 57,
        "weight": 25,
        "grade": "D",
        "checks": {
          "has_llms_txt": {
            "score": 100,
            "weight": 20,
            "details": "llms.txt exists and is valid"
          },
          "has_robots_txt": {
            "score": 100,
            "weight": 10,
            "details": "robots.txt exists"
          },
          "robots_allows_ai_bots": {
            "score": 34,
            "weight": 15,
            "details": "2/3 AI bots blocked: ClaudeBot, GPTBot"
          },
          "has_sitemap": {
            "score": 100,
            "weight": 10,
            "details": "Sitemap found"
          },
          "supports_markdown_negotiation": {
            "score": 0,
            "weight": 25,
            "details": "No Markdown for Agents support detected"
          },
          "has_content_signals": {
            "score": 60,
            "weight": 20,
            "details": "robots.txt: search=yes, ai-train=no | Policy included"
          }
        }
      },
      "structuredData": {
        "score": 100,
        "weight": 15,
        "grade": "A",
        "checks": {
          "has_schema_org": {
            "score": 100,
            "weight": 30,
            "details": "JSON-LD found: WebSite, Organization"
          },
          "has_open_graph": {
            "score": 100,
            "weight": 25,
            "details": "All OG tags present"
          },
          "has_meta_description": {
            "score": 100,
            "weight": 20,
            "details": "Meta description: 134 chars"
          },
          "has_canonical_url": {
            "score": 100,
            "weight": 15,
            "details": "Canonical URL present"
          },
          "has_lang_attribute": {
            "score": 100,
            "weight": 10,
            "details": "lang=\"en\""
          }
        }
      },
      "accessibility": {
        "score": 100,
        "weight": 15,
        "grade": "A",
        "checks": {
          "content_without_js": {
            "score": 100,
            "weight": 40,
            "details": "Content available without JavaScript"
          },
          "reasonable_page_size": {
            "score": 100,
            "weight": 30,
            "details": "Page size: 47KB"
          },
          "fast_content_position": {
            "score": 100,
            "weight": 30,
            "details": "Main content starts at 9% of HTML"
          }
        }
      }
    }
  },
  "recommendations": [
    {
      "id": "improve_content_ratio",
      "priority": "critical",
      "category": "contentEfficiency",
      "titleKey": "rec.improve_content_ratio.title",
      "descriptionKey": "rec.improve_content_ratio.description",
      "howToKey": "rec.improve_content_ratio.howto",
      "effort": "moderate",
      "estimatedImpact": 6,
      "checkScore": 0,
      "checkDetails": "Content ratio: 2.6% (1265 content chars / 47948 HTML bytes)"
    },
    {
      "id": "add_markdown_negotiation",
      "priority": "critical",
      "category": "aiDiscoverability",
      "titleKey": "rec.add_markdown_negotiation.title",
      "descriptionKey": "rec.add_markdown_negotiation.description",
      "howToKey": "rec.add_markdown_negotiation.howto",
      "effort": "significant",
      "estimatedImpact": 6,
      "checkScore": 0,
      "checkDetails": "No Markdown for Agents support detected"
    },
    {
      "id": "allow_ai_bots",
      "priority": "high",
      "category": "aiDiscoverability",
      "titleKey": "rec.allow_ai_bots.title",
      "descriptionKey": "rec.allow_ai_bots.description",
      "howToKey": "rec.allow_ai_bots.howto",
      "effort": "quick-win",
      "estimatedImpact": 7,
      "checkScore": 34,
      "checkDetails": "2/3 AI bots blocked: ClaudeBot, GPTBot"
    }
  ],
  "llmsTxtPreview": "# SpyOnWeb\n\n> Find domain relationships, shared Analytics & AdSense codes, IP addresses, nameservers and web technologies. Free reverse lookup tool.\n\n## Documentation\n- [FAQ](https://spyonweb.net/faq)\n\n## Main\n- [SpyOnWeb — Domain Intelligence & Reverse Lookup Tool](https://spyonweb.net/): Find domain relationships, shared Analytics & AdSense codes, IP addresses, nameservers and web technologies. Free rever…\n- [About Us](https://spyonweb.net/about)\n- [Top Lists](https://spyonweb.net/top)\n\n## Support\n- [FAQ](https://spyonweb.net/faq)\n\n",
  "llmsTxtExisting": "# SpyOnWeb — Domain Intelligence Platform\n\n> SpyOnWeb is a domain intelligence tool that reveals relationships between websites through shared Analytics codes, AdSense publishers, IP addresses, nameservers, SSL certificates and web technologies.\n\n## Main Pages\n\n- [Home](https://spyonweb.net/): Search any domain, IP, or identifier\n- [About](https://spyonweb.net/about): Platform overview and capabilities\n- [FAQ](https://spyonweb.net/faq): Common questions answered\n- [Top Rankings](https://spyonweb.net/top): Most prevalent technologies, SSL issuers, analytics codes\n\n## Lookup Types\n\n- Domain profile: `/domain/{name}` — Full domain report with IP, technologies, associations\n- IP lookup: `/ip/{address}` — All domains hosted on an IP address\n- Analytics: `/analytics/{code}` — Domains sharing a Google Analytics code\n- AdSense: `/adsense/{code}` — Domains from the same AdSense publisher\n- Nameserver: `/nameserver/{ns}` — Domains delegated to a DNS nameserver\n- Technology: `/technology/{name}` — Domains using a specific technology\n- SSL Issuer: `/ssl/{issuer}` — Domains with certificates from an issuer\n\n## API\n\nJSON API available at `/api/v1/` for programmatic access. API keys generated from user dashboard.",
  "snippets": [
    {
      "id": "allow_ai_bots",
      "title": "Allow AI bots in robots.txt",
      "description": "Some AI bots are blocked in your robots.txt. Remove or modify these Disallow rules to let AI agents index your content.",
      "language": "txt",
      "code": "# Add to your robots.txt — explicitly allow AI bots:\nUser-agent: GPTBot\nAllow: /\n\nUser-agent: ClaudeBot\nAllow: /\n\nUser-agent: PerplexityBot\nAllow: /",
      "filename": "/robots.txt"
    },
    {
      "id": "add_markdown_negotiation",
      "title": "Support Markdown for Agents",
      "description": "Implement one or more of the 4 Markdown for Agents mechanisms to let AI agents request content in markdown format.",
      "language": "html",
      "code": "<!-- 1. Content negotiation: respond to Accept: text/markdown -->\n<!-- In your server/framework, check the Accept header and return markdown -->\n<!-- with Content-Type: text/markdown -->\n\n<!-- 2. Serve .md URLs (e.g., /about.md alongside /about) -->\n<!-- Generate static .md files or handle .md routes in your app -->\n\n<!-- 3. Add <link> tag in your HTML <head>: -->\n<link rel=\"alternate\" type=\"text/markdown\" href=\"/page.md\">\n\n<!-- 4. Add Link HTTP header on HTML responses: -->\n<!-- Link: </page.md>; rel=\"alternate\"; type=\"text/markdown\" -->\n\n<!-- Best practice: include Vary: Accept and X-Markdown-Tokens headers -->\n<!-- on markdown responses -->",
      "filename": "<head> + server config"
    }
  ]
}

Use our API to get this programmatically (coming soon)

This JSON is for internal use — unlike the Markdown and llms.txt files, it's not meant to be uploaded to your site. Save it as a baseline to track your score over time, share it with your dev team, or integrate it into your CI/CD pipeline.

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