Top 100 / youtube.com
65
Two different webs
2 of 14 AI agents get the full page at https://youtube.com/. Checked 2026-09-25 09:17 UTC.
youtube.com scores 65 out of 100 for machine visibility, number 66 of the 100 most visited websites checked on 2026-09-25. 2 of 14 AI agents receive the full page: 2 of 8 training crawlers, 0 of 3 AI search indexes and 0 of 3 assistant fetchers. Googlebot itself is partial: Empty app shell; content needs JavaScript. The raw HTML is an app shell with 24 words; content appears only after JavaScript runs. There is no llms.txt.
youfull pagedegradedblockedunknown
Human
- Status
- 200 → https://www.youtube.com/
- Title
- YouTube
- H1
- none
- Words
- 24
- Scripts
- 42 tags · 837 KB · app shell
- Meta robots
- none
- Canonical
- https://www.youtube.com/
- Server
- ESF
Machine
- robots.txt
- 2 groups · 2 sitemaps
- llms.txt
- missing
- llms-full.txt
- missing
- X-Robots-Tag
- none
- Blocked
- none
- Degraded
- GPTBot, OAI-SearchBot, ChatGPT-User, ClaudeBot, Claude-SearchBot, Claude-User, PerplexityBot, Perplexity-User, Meta-ExternalAgent, Amazonbot, Bytespider, CCBot
- Challenged
- none
Gaps
- medium14 agents get a degraded pageGooglebot: Empty app shell; content needs JavaScript · GPTBot: Empty app shell; content needs JavaScript · OAI-SearchBot: Empty app shell; content needs JavaScript · ChatGPT-User: Empty app shell; content needs JavaScript · ClaudeBot: Empty app shell; content needs JavaScript · Claude-SearchBot: Empty app shell; content needs JavaScript · Claude-User: Empty app shell; content needs JavaScript · PerplexityBot: Empty app shell; content needs JavaScript · Perplexity-User: Empty app shell; content needs JavaScript · Bingbot: Empty app shell; content needs JavaScript · Meta-ExternalAgent: Empty app shell; content needs JavaScript · Amazonbot: Different content than humans receive · Bytespider: Different content than humans receive · CCBot: Empty app shell; content needs JavaScript
- highPage is an empty shell without JavaScriptRaw HTML holds 24 words across 42 scripts. Most AI crawlers do not execute JavaScript, so they see roughly nothing.
- lowNo llms.txtOptional, but a short curated index at /llms.txt is the cheapest way to tell assistants what matters on this site.
- infoCanonical points elsewhereCanonical is https://www.youtube.com/. Indexes will credit that URL, not this one.
Every agent
| Agent | Type | robots.txt | Fetch | Words | Result |
|---|---|---|---|---|---|
| Human (Chrome)You | Human | allowed | 2001470 ms | 24 | visible HTTP 200, 24 words |
| GooglebotGoogle · Classic search index. Also feeds AI Overviews. | Search engine | allowed | 2001107 ms | 24 | partial Empty app shell; content needs JavaScript |
| Google-ExtendedGoogle · Robots-only token controlling Gemini training use. Never fetches on its own. | AI training | allowed | n/a | visible Robots-only token; allowed by robots.txt | |
| GPTBotOpenAI · Training crawler for OpenAI models. | AI training | allowed | 2001087 ms | 24 | partial Empty app shell; content needs JavaScript |
| OAI-SearchBotOpenAI · Indexes for ChatGPT search results and citations. | AI search index | allowed | 2001068 ms | 24 | partial Empty app shell; content needs JavaScript |
| ChatGPT-UserOpenAI · Live fetch when a user asks ChatGPT about a page. | AI assistant (live fetch) | allowed | 2001170 ms | 24 | partial Empty app shell; content needs JavaScript |
| ClaudeBotAnthropic · Training crawler for Claude models. | AI training | allowed | 2001091 ms | 24 | partial Empty app shell; content needs JavaScript |
| Claude-SearchBotAnthropic · Indexes for Claude web search. | AI search index | allowed | 2001080 ms | 24 | partial Empty app shell; content needs JavaScript |
| Claude-UserAnthropic · Live fetch when a user asks Claude about a page. | AI assistant (live fetch) | allowed | 2001515 ms | 24 | partial Empty app shell; content needs JavaScript |
| PerplexityBotPerplexity | AI search index | allowed | 2001164 ms | 24 | partial Empty app shell; content needs JavaScript |
| Perplexity-UserPerplexity | AI assistant (live fetch) | allowed | 2001135 ms | 24 | partial Empty app shell; content needs JavaScript |
| BingbotMicrosoft · Bing index. Also feeds Copilot and ChatGPT search. | Search engine | allowed | 2001110 ms | 24 | partial Empty app shell; content needs JavaScript |
| Applebot-ExtendedApple · Robots-only token for Apple Intelligence training. | AI training | allowed | n/a | visible Robots-only token; allowed by robots.txt | |
| Meta-ExternalAgentMeta | AI training | allowed | 2001059 ms | 24 | partial Empty app shell; content needs JavaScript |
| AmazonbotAmazon · Alexa and Amazon AI. | AI training | allowed | 2001046 ms | 47 | partial Different content than humans receive |
| BytespiderByteDance · Known for ignoring robots.txt. | AI training | allowed | 2001537 ms | 1 | partial Different content than humans receive |
| CCBotCommon Crawl · Open dataset used to train most LLMs. | AI training | allowed | 2001118 ms | 24 | partial Empty app shell; content needs JavaScript |
Snapshot
Measured 2026-09-25 09:17 UTC from a residential connection. Sites change their rules often, and sites that verify crawler IPs answer differently to different networks. Run a live comparison to see what youtube.com does right now, from Cloudflare's network.