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SGSiteGraph

clinicaltrials.gov

ClinicalTrials.gov

Last scanned Jul 21, 2026, 11:40 AM · 2 views

80

Overall score

Great

Top issues to fix

7 issues found · 3 high priority

  • Missing Content-Security-Policy header

    Security

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

  • Missing meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • No H1 heading found

    SEO

    Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.

  • Missing X-Content-Type-Options header

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

  • No structured data (JSON-LD) found

    SEO

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

+1 more issue — details in the sections below.

Summary

This website is hosted on Google Cloud. SEO is fair (60/100) and accessibility is excellent (90/100). Security scores good (85/100) and performance excellent (90/100). Top issue: Missing meta description.

60

SEO

5 issue(s) found

90

Performance

429 ms

85

Security

HTTPS & header checks

90

Accessibility

1 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.

Contact

Email, phone, and address published on this site's own pages.

Source: https://clinicaltrials.gov/contact

Meta tags

Title
ClinicalTrials.gov
Description
Canonical
Language
en
Charset
UTF-8
Viewport
width=device-width, initial-scale=1.0, minimum-scale=1
Robots meta
index, follow
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
summary
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

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
  • nihcesxway3.hub.nih.gov
  • nihcesxway5.hub.nih.gov
  • nihcesxway4.hub.nih.gov
TXT
  • google-site-verification=fOlJTfzhsN7Vee2dbKTOV2EleNnSVtj2RYj6BaQezbY
  • v=spf1 include:nih.gov ~all
  • google-site-verification=PNIgJgOfWG3Bog_wPM4sYF_UW_QJ0T-JVZHEDuDCaD4
  • GrclYGeUpoKjW0RtHDm8IoEXyQddPqL5pdiiXvLuV7za7OiNXC+wgFWXKhBJGAt5m6Qx3pTXVsPlpI18d7ykiQ==
  • o6lmcbo4cn7r8882vn65cpjcfv.
NS
  • ns-cloud-d2.googledomains.com
  • ns-cloud-d4.googledomains.com
  • ns-cloud-d3.googledomains.com
  • ns-cloud-d1.googledomains.com
CAA
  • 0 issuewild "godaddy.com"
  • 0 issuewild "letsencrypt.org"
  • 0 issue "godaddy.com"
  • 0 issue "letsencrypt.org"
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
GoDaddy.com, Inc.
Subject
*.clinicaltrials.gov
Valid from
Mar 12, 2026
Valid to
Sep 26, 2026
Days until expiry
67
SAN domains
*.clinicaltrials.gov, clinicaltrials.gov

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

1 internal · 0 external · 0 broken

Images

0 total · 0 missing alt

Scripts / Styles

5 scripts · 1 stylesheets

JS / CSS size

363 KB · 812 KB

Page size

92.1 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
3
sitemap.xml
Found
URLs in sitemap
-1

SEO issues

  • Missing meta description
  • Missing canonical link
  • No H1 heading found
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags

Accessibility issues

  • No H1 heading found

Careers

View careers page

This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.

Scan details

Requested URL
https://clinicaltrials.gov
Final URL
https://clinicaltrials.gov
HTTP status
200
HTTP version
HTTP/2
Response time
428 ms
HTML size
92.1 KB
Redirect chain
https://clinicaltrials.gov

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Frequently asked questions

What technology does clinicaltrials.gov use?
We did not detect any specific technologies for clinicaltrials.gov in the latest scan.
Is clinicaltrials.gov secure (HTTPS)?
Yes. clinicaltrials.gov uses TLS 1.3 with a certificate issued by GoDaddy.com, Inc., valid until Sep 26, 2026.
Who hosts clinicaltrials.gov?
clinicaltrials.gov is hosted on Google Cloud.
What is clinicaltrials.gov's SEO score?
clinicaltrials.gov scored 60/100 for SEO in the latest analysis (fair).
What is clinicaltrials.gov's overall website score?
clinicaltrials.gov has an overall SiteGraph score of 80/100, combining SEO, performance, security, and accessibility.
Is clinicaltrials.gov hiring?
clinicaltrials.gov has a careers page; check it directly for current openings.