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SGSiteGraph

colorado.edu

Home | University of Colorado Boulder

Last scanned Jul 18, 2026, 8:49 PM

85

Overall score

Great

Top issues to fix

4 issues found · 2 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.

  • TLS certificate expires in 16 days

    Security

    Renew soon or enable auto-renewal to avoid a browser-warning outage.

  • No structured data (JSON-LD) found

    SEO

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

Summary

This website uses Nginx hosted on Fastly behind Fastly CDN. SEO is good (80/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance good (75/100). Top issue: Missing meta description.

80

SEO

2 issue(s) found

75

Performance

10 ms

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.

Contact

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

Meta tags

Title
Home | University of Colorado Boulder
Description
Canonical
https://www.colorado.edu/
Language
en
Charset
utf-8
Viewport
width=device-width, initial-scale=1.0
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Home
og:description
og:type
og:url

Twitter Card

twitter:card
twitter:title
twitter:description

Technologies

Detected frameworks, languages, and tools.

Hosting & CDN

Hosting provider
Fastly
CDN provider
Fastly
IP address
151.101.130.133
ASN
AS54113 (FASTLY - Fastly, Inc., US)

DNS records

TypeValue
A
  • 151.101.130.133
  • 151.101.2.133
  • 151.101.194.133
  • 151.101.66.133
AAAA
  • 2a04:4e42:200::645
  • 2a04:4e42:400::645
  • 2a04:4e42::645
  • 2a04:4e42:600::645
MX
TXT
NS
CAA
CNAME
  • pantheon-systems.map.fastly.net
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.2
Issuer
Certainly
Subject
www.colorado.edu
Valid from
Jul 5, 2026
Valid to
Aug 4, 2026
Days until expiry
16
SAN domains
www.colorado.edu

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 11 · H3 1

Links

103 internal · 17 external · 0 broken

Images

7 total · 0 missing alt

Scripts / Styles

11 scripts · 6 stylesheets

JS / CSS size

1.8 MB · 721 KB

Page size

84.9 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
33
sitemap.xml
Found
URLs in sitemap
1405

SEO issues

  • Missing meta description
  • No structured data (JSON-LD) found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://colorado.edu
Final URL
https://www.colorado.edu/
HTTP status
200
HTTP version
HTTP/2
Response time
9 ms
HTML size
84.9 KB
Redirect chain
https://colorado.edu → https://www.colorado.edu/

Frequently asked questions

What technology does colorado.edu use?
colorado.edu is built with Drupal, jQuery, Nginx.
Is colorado.edu secure (HTTPS)?
Yes. colorado.edu uses TLS 1.2 with a certificate issued by Certainly, valid until Aug 4, 2026.
Who hosts colorado.edu?
colorado.edu is hosted on Fastly, behind Fastly CDN.
What is colorado.edu's SEO score?
colorado.edu scored 80/100 for SEO in the latest analysis (great).
What is colorado.edu's overall website score?
colorado.edu has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.
Is colorado.edu hiring?
Yes. colorado.edu has 3 open roles listed on their careers page.