substack.com
Substack
Category Scores
All 17 Checks
robots.txt found — no AI crawlers are blocked
Page is open to indexing by AI agents
Only ~45 words in server-rendered HTML — AI crawlers may miss content
Headings: 0 H1, 0 H2, 1 H3. Semantic elements: none
Found structured data: RDFa
Text-to-HTML ratio: 0.4% (0KB text / 78KB total)
No FAQ schema or FAQ content detected
No llms.txt file found at site root
~45 extractable words
Entity signals found: page title, meta description, entity context (about/contact)
No MCP server manifest found (optional — for sites that expose tools to AI agents)
E-E-A-T signals found: author meta tag
Page loaded in 189ms
0 blocking scripts, 14 stylesheets in <head>
OG tags — Title: yes, Description: yes, Image: yes, Type: yes
Meta description: 30 chars (too short)
No date/freshness metadata found