merckmanuals.com
The Trusted Provider of Medical Information since 1899
Last scanned Aug 1, 2026, 11:00 PM · 8 views
Overall score
Excellent
Summary
At Merck (known as MSD outside the United States and Canada) we are unified around our purpose: We use the power of leading-edge science to save and improve lives around the world. This website uses Next.js behind CloudFront CDN. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (90/100). Top issue: robots.txt not found.
Merck Manuals
At Merck (known as MSD outside the United States and Canada) we are unified around our purpose: We use the power of leading-edge science to save and improve lives around the world. For more than 130 years, we have brought hope to humanity through the development of important medicines and vaccines. We aspire to be the premier research-intensive biopharmaceutical company in the world – and today, we are at the forefront of research to deliver innovative health solutions that advance the prevention and treatment of diseases in people and animals.First published in 1899 as a small reference book for physicians and pharmacists, The Merck Manual grew in size and scope to become one of the world's most widely used comprehensive medical resources for professionals and consumers. As The Manual evolved, it continually expanded the reach and depth of its offerings to reflect the mission of providing the best medical information to a wide cross-section of users, including medical professionals and students, veterinarians and veterinary students, and consumers. Learn more about our commitment toGlobal Medical Knowledge.
Top issues to fix
4 issues found
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
20 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
2 issue(s) found
Performance
1.46 s
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
+3 overall since Jul 25, 2026
- Overall
- 92
- SEO
- 90
- Security
- 90
- Performance
- 90
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
Merck Manuals
At Merck (known as MSD outside the United States and Canada) we are unified around our purpose: We use the power of leading-edge science to save and improve lives around the world. For more than 130 years, we have brought hope to humanity through the development of important medicines and vaccines. We aspire to be the premier research-intensive biopharmaceutical company in the world – and today, we are at the forefront of research to deliver innovative health solutions that advance the prevention and treatment of diseases in people and animals.First published in 1899 as a small reference book for physicians and pharmacists, The Merck Manual grew in size and scope to become one of the world's most widely used comprehensive medical resources for professionals and consumers. As The Manual evolved, it continually expanded the reach and depth of its offerings to reflect the mission of providing the best medical information to a wide cross-section of users, including medical professionals and students, veterinarians and veterinary students, and consumers. Learn more about our commitment toGlobal Medical Knowledge.
Meta tags
- Title
- The Trusted Provider of Medical Information since 1899
- Description
- The Merck Manuals are the global standard in medical reference for Doctors, Students & Consumers - since 1899.
- Canonical
- https://www.merckmanuals.com
- Language
- en-us
- Charset
- utf-8
- Viewport
- width=device-width, height=device-height, initial-scale=1, minimum-scale=1, maximum-scale=5, user-scalable=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- CloudFront
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Amazon
- Subject
- www.merckmanuals.com
- Valid from
- Jan 23, 2026
- Valid to
- Feb 20, 2027
- Days until expiry
- 203
- SAN domains
- www.merckmanuals.com, cf-www.merckmanuals.com
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsMissing
- X-Content-Type-OptionsEnabled
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 4 · H3 12
Links
13 internal · 7 external · 20 broken
Images
29 total · 0 missing alt
Scripts / Styles
33 scripts · 8 stylesheets
JS / CSS size
78.5 KB · 0 B
Page size
132 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://merckmanuals.com
- Final URL
- https://www.merckmanuals.com/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 1.46 s
- HTML size
- 132 KB
- Redirect chain
- https://merckmanuals.com → https://www.merckmanuals.com/
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Frequently asked questions
- What technology does merckmanuals.com use?
- merckmanuals.com is built with Next.js.
- Is merckmanuals.com secure (HTTPS)?
- Yes. merckmanuals.com uses TLS 1.3 with a certificate issued by Amazon, valid until Feb 20, 2027.
- Who hosts merckmanuals.com?
- Hosting provider information for merckmanuals.com is not available yet.
- What is merckmanuals.com's SEO score?
- merckmanuals.com scored 90/100 for SEO in the latest analysis (excellent).
- What is merckmanuals.com's overall website score?
- merckmanuals.com has an overall SiteGraph score of 92/100, combining SEO, performance, security, and accessibility.
- What company operates merckmanuals.com?
- merckmanuals.com is operated by Merck Manuals. At Merck (known as MSD outside the United States and Canada) we are unified around our purpose: We use the power of leading-edge science to save and improve lives around the world. For more than 130 years, we have brought hope to humanity through the development of important medicines and vaccines. We aspire to be the premier research-intensive biopharmaceutical company in the world – and today, we are at the forefront of research to deliver innovative health solutions that advance the prevention and treatment of diseases in people and animals.First published in 1899 as a small reference book for physicians and pharmacists, The Merck Manual grew in size and scope to become one of the world's most widely used comprehensive medical resources for professionals and consumers. As The Manual evolved, it continually expanded the reach and depth of its offerings to reflect the mission of providing the best medical information to a wide cross-section of users, including medical professionals and students, veterinarians and veterinary students, and consumers. Learn more about our commitment toGlobal Medical Knowledge.
- Has merckmanuals.com's score changed over time?
- merckmanuals.com's overall score has improved by 3 points (from 89 to 92) since Jul 25, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card