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SGSiteGraph

science.gov

Science.gov

Last scanned Jul 26, 2026, 5:47 AM

89

Overall score

Great

Summary

Science.gov is a gateway to government science information provided by U.S. This website uses Apache. SEO is good (75/100) and accessibility is excellent (100/100). Security scores good (85/100) and performance excellent (100/100). Top issue: Missing canonical link.

Science.gov is a gateway to government science information provided by U.S. Government science agencies, including research and development results.

Top issues to fix

8 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.

  • Missing X-Content-Type-Options header

    Security

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

  • 1 cookie without Secure/HttpOnly flags

    Security

    Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.

  • 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.

  • robots.txt not found

    SEO

    Publish /robots.txt with a Sitemap: directive to guide crawlers.

+2 more issues — details in the sections below.

75

SEO

4 issue(s) found

100

Performance

538 ms

85

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.

Science.gov is a gateway to government science information provided by U.S. Government science agencies, including research and development results.

Meta tags

Title
Science.gov
Description
Science.gov is a gateway to government science information provided by U.S. Government science agencies, including research and development results.
Canonical
Language
en
Charset
UTF-8
Viewport
width=device-width, initial-scale=1.0
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Science.gov
og:description
Science.gov is a gateway to government science information provided by U.S. Government science agencies, including research and development results.
og:type
website
og:url
https://www.science.gov/index.html

Twitter Card

twitter:card
summary
twitter:title
twitter:description

Technologies

Detected frameworks, languages, and tools.

Hosting & CDN

Hosting provider
CDN provider
IP address
ASN

DNS records

TypeValue
A
AAAA
MX
TXT
NS
CAA
CNAME
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Sectigo Limited
Subject
*.science.gov
Valid from
Mar 17, 2026
Valid to
Oct 1, 2026
Days until expiry
64
SAN domains
*.science.gov, science.gov

Security headers

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

Compression: none · 1 cookie(s) observed

Content & assets

Headings

H1 1 · H2 1 · H3 0

Links

8 internal · 14 external · 20 broken

Images

17 total · 0 missing alt

Scripts / Styles

4 scripts · 1 stylesheets

JS / CSS size

1.9 KB · 0 B

Page size

8.3 KB

Robots.txt & Sitemap

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

SEO issues

  • Missing canonical link
  • No structured data (JSON-LD) found
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://science.gov
Final URL
https://www.science.gov/
HTTP status
200
HTTP version
HTTP/1.1
Response time
538 ms
HTML size
8.3 KB
Redirect chain
https://science.gov → https://www.science.gov/

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Frequently asked questions

What technology does science.gov use?
science.gov is built with Google Analytics, Apache.
Is science.gov secure (HTTPS)?
Yes. science.gov uses TLS 1.3 with a certificate issued by Sectigo Limited, valid until Oct 1, 2026.
Who hosts science.gov?
Hosting provider information for science.gov is not available yet.
What is science.gov's SEO score?
science.gov scored 75/100 for SEO in the latest analysis (fair).
What is science.gov's overall website score?
science.gov has an overall SiteGraph score of 89/100, combining SEO, performance, security, and accessibility.