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Cloudflare served our scanner a challenge page instead of your content, so the score and findings below reflect that challenge page — not your actual site. Our scanner runs from a datacenter IP; real visitors and IP-verified crawlers (Googlebot, GPTBot, etc.) are checked by IP and usually pass. To see what really gets through, check Google Search Console or your server logs.
Visibility report for substack.com
https://substack.com/
5 pages analyzed•Scanned Feb 26, 2026, 05:00 PM186d old — rescan
Scanned from an EU (Germany) data center — geo-adaptive sites may serve a European locale.
AI crawlers see only 71% of your content
GPTBot, ClaudeBot, CCBot and other non-rendering AI bots fetch raw HTML and stop — anything injected by JavaScript is invisible to them.
- ·85% of content is loaded via JavaScript
- ·25 of 25 images are loaded via JavaScript
- ·25 of 27 internal links are loaded via JavaScript
- ·Only 11% of content is in initial HTML
- ·93% of content is loaded via JavaScript
- ·50 of 50 images are loaded via JavaScript
Fix: server-render or pre-render the affected content so it appears in the initial HTML response.
How each LLM sees your site
Score per AI product, 0–100Scores diverge because robots.txt access, JavaScript rendering, content freshness and firewall rules differ per product. Each card shows the crawlers by role — the search bot is the visibility gate; blocking a training bot is a policy choice, not a failure.
Reads raw HTML only — JavaScript-loaded content invisible
Reads raw HTML only — JavaScript-loaded content invisible
Reads raw HTML only — JavaScript-loaded content invisible
Rides Google's index, which renders JavaScript — sees full content
Reads raw HTML only — JavaScript-loaded content invisible
Reads raw HTML only — JavaScript-loaded content invisible
Visibility Breakdown
Top Issues
Bot protection wall detected (Cloudflare detected) — may block some crawlers
Your robots.txt may allow crawlers, but Cloudflare's bot protection sits in front of your server and can block them before they ever reach your site. Go to Cloudflare Dashboard > Security > Bots — check if Bot Fight Mode or Super Bot Fight Mode is on. Under Security > WAF, review any custom rules that challenge or block bots. Googlebot and Bingbot are on Cloudflare's verified bot list and usually pass through, but AI crawlers (GPTBot, ClaudeBot, PerplexityBot) are not verified and may be blocked.
Bot protection wall detected (Cloudflare detected) — may block some crawlers
Your robots.txt may allow crawlers, but Cloudflare's bot protection sits in front of your server and can block them before they ever reach your site. Go to Cloudflare Dashboard > Security > Bots — check if Bot Fight Mode or Super Bot Fight Mode is on. Under Security > WAF, review any custom rules that challenge or block bots. Googlebot and Bingbot are on Cloudflare's verified bot list and usually pass through, but AI crawlers (GPTBot, ClaudeBot, PerplexityBot) are not verified and may be blocked.
Bot protection wall detected (Cloudflare detected) — may block some crawlers
Your robots.txt may allow crawlers, but Cloudflare's bot protection sits in front of your server and can block them before they ever reach your site. Go to Cloudflare Dashboard > Security > Bots — check if Bot Fight Mode or Super Bot Fight Mode is on. Under Security > WAF, review any custom rules that challenge or block bots. Googlebot and Bingbot are on Cloudflare's verified bot list and usually pass through, but AI crawlers (GPTBot, ClaudeBot, PerplexityBot) are not verified and may be blocked.
85% of content is loaded via JavaScript
Over 70% of your content only appears after JavaScript executes. Googlebot sends pages to a separate rendering queue for JS execution, which can delay indexing by hours or days. AI crawlers like GPTBot and ClaudeBot don't execute JavaScript at all — they see less than 30% of your content. Implement server-side rendering (SSR) or pre-rendering for critical content.
Bot protection wall detected (Cloudflare detected) — may block some crawlers
Your robots.txt may allow crawlers, but Cloudflare's bot protection sits in front of your server and can block them before they ever reach your site. Go to Cloudflare Dashboard > Security > Bots — check if Bot Fight Mode or Super Bot Fight Mode is on. Under Security > WAF, review any custom rules that challenge or block bots. Googlebot and Bingbot are on Cloudflare's verified bot list and usually pass through, but AI crawlers (GPTBot, ClaudeBot, PerplexityBot) are not verified and may be blocked.
SEO Recommendations30 tips — not affecting visibility score
Page is missing an H1 heading
Googlebot uses the H1 as a primary signal for the page's main topic. Without one, crawlers rely on the title tag alone, which weakens topical relevance. AI systems also look for the H1 to understand what the page is fundamentally about. Add a single, descriptive H1 that reflects the page's primary content.
18 of 25 images missing alt text
Googlebot cannot "see" images — it relies entirely on alt text to understand what an image shows. Without it, images won't appear in Google Image Search, and the page loses keyword context that crawlers use for ranking. AI systems also depend on alt text when describing page content. Add descriptive alt text to every meaningful image.
28 of 32 images missing alt text
Googlebot cannot "see" images — it relies entirely on alt text to understand what an image shows. Without it, images won't appear in Google Image Search, and the page loses keyword context that crawlers use for ranking. AI systems also depend on alt text when describing page content. Add descriptive alt text to every meaningful image.
103 of 103 images missing alt text
Googlebot cannot "see" images — it relies entirely on alt text to understand what an image shows. Without it, images won't appear in Google Image Search, and the page loses keyword context that crawlers use for ranking. AI systems also depend on alt text when describing page content. Add descriptive alt text to every meaningful image.
Page is missing an H1 heading
Googlebot uses the H1 as a primary signal for the page's main topic. Without one, crawlers rely on the title tag alone, which weakens topical relevance. AI systems also look for the H1 to understand what the page is fundamentally about. Add a single, descriptive H1 that reflects the page's primary content.
18 of 25 images missing alt text
Googlebot cannot "see" images — it relies entirely on alt text to understand what an image shows. Without it, images won't appear in Google Image Search, and the page loses keyword context that crawlers use for ranking. AI systems also depend on alt text when describing page content. Add descriptive alt text to every meaningful image.
Page is missing an H1 heading
Googlebot uses the H1 as a primary signal for the page's main topic. Without one, crawlers rely on the title tag alone, which weakens topical relevance. AI systems also look for the H1 to understand what the page is fundamentally about. Add a single, descriptive H1 that reflects the page's primary content.
Title is too short (8 characters)
Short titles waste valuable SERP real estate. Google displays up to ~60 characters — a longer, keyword-rich title gives crawlers more context about the page and improves click-through rates. Aim for 50–60 characters.
Meta description is too short (30 characters)
Short descriptions don't give Google enough to work with for snippets. Google may ignore it entirely and generate its own snippet from page content instead. Expand to 150–160 characters with a compelling summary that includes your target keywords.
Page has empty H1 heading(s)
An empty H1 is worse than no H1 — it tells Googlebot the page has a primary heading but provides no topical information. This wastes a critical ranking signal. Add descriptive text that clearly states the page's main topic.
Title is too short (8 characters)
Short titles waste valuable SERP real estate. Google displays up to ~60 characters — a longer, keyword-rich title gives crawlers more context about the page and improves click-through rates. Aim for 50–60 characters.
Meta description is too short (30 characters)
Short descriptions don't give Google enough to work with for snippets. Google may ignore it entirely and generate its own snippet from page content instead. Expand to 150–160 characters with a compelling summary that includes your target keywords.
Title is too short (18 characters)
Short titles waste valuable SERP real estate. Google displays up to ~60 characters — a longer, keyword-rich title gives crawlers more context about the page and improves click-through rates. Aim for 50–60 characters.
Meta description is too short (35 characters)
Short descriptions don't give Google enough to work with for snippets. Google may ignore it entirely and generate its own snippet from page content instead. Expand to 150–160 characters with a compelling summary that includes your target keywords.
20 of 50 images missing alt text
Googlebot cannot "see" images — it relies entirely on alt text to understand what an image shows. Without it, images won't appear in Google Image Search, and the page loses keyword context that crawlers use for ranking. AI systems also depend on alt text when describing page content. Add descriptive alt text to every meaningful image.
+ 15 more tips in the Issues tab.
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