cancer.gov Website Health Report
Comprehensive Cancer Information - NCI
Accurate, up-to-date, comprehensive cancer information from the U.S. government's principal agency for cancer research.
Analyzed 8/2/2026, 3:44:58 AM · https://cancer.gov
Summary
As of August 2, 2026, cancer.gov scores 69/100 overall (grade C), ranking #315 of 995 websites in the E:LAB STUDIO database — the top 32%. Its strongest area is Technical (100/100); its weakest is Schema (20/100).
Its AI-search visibility (AEO) score is 35/100 — a measure of how citable the page is to AI answer engines like ChatGPT and Perplexity. 1 structured-data type detected (WebSite). Top fixes: Organization schema, FAQ schema, Author / publish date present.
Speed scores 91/100: the server answered in 598ms, the HTML weighs 44 KB, compression is on, and 4 render-blocking resources sit in <head>. Security scores 76/100: the site is served over HTTPS and is missing the Content-Security-Policy, Referrer-Policy headers.
Compared with the database average (61/100 overall), cancer.gov scores 8 points higher.
How to improve
20Based on this report, here are the highest-impact fixes across SEO, AI-search visibility, speed and security:
Want us to fix these for you?
Request a site fixSEO
- ✓Title tag present10/10
- ✓Meta description present10/10
- ✗H1 heading present0/10
- ✓Canonical URL set10/10
- ✓Open Graph tags present10/10
- ✓sitemap.xml found10/10
- ✓robots.txt found10/10
- ◐Images have alt text9/10
- ✓Internal links present10/10
- ✓Structured data present10/10
AI Visibility (AEO)
- ✗Organization schema0/15
- ✗FAQ schema0/15
- ✓Substantive, descriptive content (heuristic)15/15
- ✓Company/brand identity (About page or Org schema)10/10
- ✗Author / publish date present0/10
- ✗Structured heading (single clear H1)0/10
- ✓External source/citation links10/10
- ✗Industry/location info0/10
- ✗Price/product info0/5
Schema
- ✓Any JSON-LD present20/20
- ✗Organization0/15
- ✗FAQPage0/15
- ✗LocalBusiness0/15
- ✗Article or Product0/15
- ✗Breadcrumb0/10
- ✗Author/date structured0/10
Technical
- ✓robots.txt found15/15
- ✓sitemap.xml found15/15
- ✓Canonical URL set15/15
- ✓Mobile viewport meta15/15
- ✓Language attribute set10/10
- ✓Open Graph tags10/10
- ✓Title length is optimal10/10
- ✓Description length is optimal10/10
Speed
- ◐Fast server response (TTFB)20/25
- ✓HTML delivered quickly15/15
- ✓Compression enabled15/15
- ✓HTML payload is lean10/10
- ✓Browser caching headers10/10
- ◐Few render-blocking resources12/15
- ◐Images are lazy-loaded4/5
- ✓Images have explicit dimensions5/5
Security
- ✓Served over HTTPS20/20
- ✓HTTP redirects to HTTPS10/10
- ✓TLS certificate not near expiry5/5
- ✓HSTS header15/15
- ✗Content-Security-Policy header0/12
- ✓X-Content-Type-Options: nosniff8/8
- ✓Clickjacking protection8/8
- ✗Referrer-Policy header0/7
- ✗Permissions-Policy header0/5
- ✓No mixed content5/5
- ✓Server version not disclosed5/5
Want a higher score than this site?
Run a free health check on your own site and get a prioritized fix list.
Check my siteWhat clients said
10 reviews, 5.0 average, 4 of them from repeat clients.
Left on Kmong, Korea's largest freelance marketplace. Shown in the original Korean, word for word — translating someone else's review would be rewriting it.
FAQ about cancer.gov
What is cancer.gov's SEO score?
cancer.gov scores 89/100 for on-page SEO and 69/100 overall (grade C) — rank #315 of 995 sites in the E:LAB STUDIO database.
Is cancer.gov visible to AI search engines like ChatGPT?
Its AI-visibility score is low at 35/100. Priority gaps: Organization schema, FAQ schema.
What technology does cancer.gov use?
No specific framework or CMS was detectable from its public HTML.
What should cancer.gov fix first?
Based on this report: Organization schema, FAQ schema. The full prioritized list is in the "How to improve" section below.
When was this report generated?
On August 2, 2026, from publicly fetched HTML. Anyone can re-run the analysis for free to refresh it.
Compare with similar sites
Free website checkers
Add this score badge to your site
Copy the snippet to show a live E:LAB STUDIO badge that links back to this report.