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SGSiteGraph

pubmed.gov

PubMed

Last scanned Jul 26, 2026, 11:19 AM

89

Overall score

Great

Summary

PubMed® comprises more than 40 million citations for biomedical literature from MEDLINE, life science journals, and online books. This website uses Nginx hosted on Google Cloud. SEO is good (80/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (90/100). Top issue: Meta description longer than 160 characters.

PubMed® comprises more than 40 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full text content from PubMed Central and publisher web sites.

United States
Hosted on Google Cloud

Top issues to fix

5 issues found · 1 high priority

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Meta description longer than 160 characters

    SEO

    Trim the meta description to under 160 characters to avoid truncation in search results.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

  • sitemap.xml not found

    SEO

    Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

  • 5 broken links on the page

    SEO

    Fix or remove broken links — they waste crawl budget and erode user trust.

80

SEO

3 issue(s) found

90

Performance

1.38 s

90

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

PubMed® comprises more than 40 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full text content from PubMed Central and publisher web sites.

X (Twitter)FacebookLinkedInGitHubX (Twitter)FacebookYouTube

Meta tags

Title
PubMed
Description
PubMed® comprises more than 40 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full text content from PubMed Central and publisher web sites.
Canonical
https://pubmed.ncbi.nlm.nih.gov/
Language
en
Charset
UTF-8
Viewport
width=device-width, initial-scale=1.0
Robots meta
index,follow,noarchive
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
PubMed
og:description
PubMed® comprises more than 40 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full text content from PubMed Central and publisher web sites.
og:type
website
og:url
https://pubmed.ncbi.nlm.nih.gov/

Twitter Card

twitter:card
summary_large_image
twitter:title
PubMed
twitter:description
PubMed® comprises more than 40 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full text content from PubMed Central and publisher web sites.

Technologies

Detected frameworks, languages, and tools.

DjangoGoogle AnalyticsNginx

Hosting & CDN

Hosting provider
Google Cloud
CDN provider
—
IP address
34.107.134.59
ASN
AS396982 (GOOGLE-CLOUD-PLATFORM - Google LLC, US)

DNS records

TypeValue
A
  • 34.107.134.59
AAAA
  • 2600:1901:0:c831::
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
GoDaddy.com, Inc.
Subject
pubmed.ncbi.nlm.nih.gov
Valid from
Mar 12, 2026
Valid to
Sep 26, 2026
Days until expiry
59
SAN domains
pubmed.ncbi.nlm.nih.gov, www.pubmed.ncbi.nlm.nih.gov

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyMissing
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyEnabled
  • Permissions-PolicyMissing

Compression: gzip · 3 cookie(s) observed

Content & assets

Headings

H1 1 · H2 6 · H3 4

Links

19 internal · 34 external · 5 broken

Images

5 total · 0 missing alt

Scripts / Styles

8 scripts · 4 stylesheets

JS / CSS size

138 KB · 30.6 KB

Page size

41.4 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
45
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Meta description longer than 160 characters
  • No structured data (JSON-LD) found
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://pubmed.gov
Final URL
https://pubmed.ncbi.nlm.nih.gov/
HTTP status
200
HTTP version
HTTP/2
Response time
1.38 s
HTML size
41.4 KB
Redirect chain
https://pubmed.gov → https://pubmed.ncbi.nlm.nih.gov/

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Frequently asked questions

What technology does pubmed.gov use?
pubmed.gov is built with Django, Google Analytics, Nginx.
Is pubmed.gov secure (HTTPS)?
Yes. pubmed.gov uses TLS 1.3 with a certificate issued by GoDaddy.com, Inc., valid until Sep 26, 2026.
Who hosts pubmed.gov?
pubmed.gov is hosted on Google Cloud.
What is pubmed.gov's SEO score?
pubmed.gov scored 80/100 for SEO in the latest analysis (great).
What is pubmed.gov's overall website score?
pubmed.gov has an overall SiteGraph score of 89/100, combining SEO, performance, security, and accessibility.