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clemson.edu

Clemson University, South Carolina

Last scanned Jul 29, 2026, 6:00 PM · 9 views

81

Overall score

Great

Summary

Clemson University is a leading public research institution located in Upstate South Carolina. This website uses PHP. SEO is good (75/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (90/100). Top issue: Multiple H1 headings found.

Clemson University is a leading public research institution located in Upstate South Carolina. Here, researchers create solutions that change the world.

Top issues to fix

9 issues found · 2 high priority

  • Missing Strict-Transport-Security header

    Security

    Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.

  • 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.

  • Missing X-Frame-Options header

    Security

    Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

  • Multiple H1 headings found

    SEO

    Keep a single H1 per page and demote the others to H2/H3.

  • No structured data (JSON-LD) found

    SEO

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

+3 more issues — details in the sections below.

75

SEO

4 issue(s) found

90

Performance

563 ms

65

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Score history

-1 overall since Jul 21, 2026

Overall
81
SEO
75
Security
65
Performance
90
Accessibility
100

Organization

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

Clemson University is a leading public research institution located in Upstate South Carolina. Here, researchers create solutions that change the world.

YouTubeFacebookInstagramX (Twitter)LinkedInYouTube

Contact

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

Meta tags

Title
Clemson University, South Carolina
Description
Clemson University is a leading public research institution located in Upstate South Carolina. Here, researchers create solutions that change the world.
Canonical
https://www.clemson.edu/
Language
en-US
Charset
UTF-8
Viewport
width=device-width, initial-scale=1
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Clemson University, South Carolina
og:description
Clemson University is a leading public research institution located in Upstate South Carolina. Here, researchers create solutions that change the world.
og:type
website
og:url
//www.clemson.edu/

Twitter Card

twitter:card
summary_large_image
twitter:title
Clemson University, South Carolina
twitter:description
Clemson University is a leading public research institution located in Upstate South Carolina. Here, researchers create solutions that change the world.

Technologies

Detected frameworks, languages, and tools.

PHPApache

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 1.2
Issuer
Internet2
Subject
clemson.edu
Valid from
Mar 9, 2026
Valid to
Apr 9, 2027
Days until expiry
254
SAN domains
clemson.edu, *.clemson.edu

Security headers

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

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 2 · H2 25 · H3 28

Links

110 internal · 36 external · 20 broken

Images

30 total · 0 missing alt

Scripts / Styles

10 scripts · 2 stylesheets

JS / CSS size

4.1 KB · 10.3 KB

Page size

398 KB

Robots.txt & Sitemap

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

SEO issues

  • Multiple H1 headings found
  • 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://clemson.edu
Final URL
https://www.clemson.edu/
HTTP status
200
HTTP version
HTTP/1.1
Response time
555 ms
HTML size
398 KB
Redirect chain
https://clemson.edu → https://www.clemson.edu/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does clemson.edu use?
clemson.edu is built with PHP, Apache.
Is clemson.edu secure (HTTPS)?
Yes. clemson.edu uses TLS 1.2 with a certificate issued by Internet2, valid until Apr 9, 2027.
Who hosts clemson.edu?
Hosting provider information for clemson.edu is not available yet.
What is clemson.edu's SEO score?
clemson.edu scored 75/100 for SEO in the latest analysis (fair).
What is clemson.edu's overall website score?
clemson.edu has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.
Has clemson.edu's score changed over time?
clemson.edu's overall score has declined by 1 point (from 82 to 81) since Jul 21, 2026.