calvin.edu
Calvin University | Grand Rapids, Michigan
Last scanned Aug 2, 2026, 8:00 AM · 9 views
Overall score
Excellent
Summary
Calvin University is a world-class Christian university in Grand Rapids, Michigan. This website uses Nginx behind Fastly CDN. SEO is good (80/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: No structured data (JSON-LD) found.
Calvin University is a world-class Christian university in Grand Rapids, Michigan. Calvin ranks #1 in the Midwest among regional colleges.
Top issues to fix
5 issues found · 1 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
20 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
3 issue(s) found
Performance
12 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
+3 overall since Jul 26, 2026
- Overall
- 92
- SEO
- 80
- Security
- 90
- Performance
- 100
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
Calvin University is a world-class Christian university in Grand Rapids, Michigan. Calvin ranks #1 in the Midwest among regional colleges.
Contact
Email, phone, and address published on this site's own pages.
- info@calvin.edu
Meta tags
- Title
- Calvin University | Grand Rapids, Michigan
- Description
- Calvin University is a world-class Christian university in Grand Rapids, Michigan. Calvin ranks #1 in the Midwest among regional colleges.
- Canonical
- https://calvin.edu/
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1, shrink-to-fit=no
- Robots meta
- index, follow
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- Fastly
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- calvin.edu
- Valid from
- Jul 16, 2026
- Valid to
- Oct 14, 2026
- Days until expiry
- 73
- SAN domains
- calvin.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 21 · H3 16
Links
91 internal · 12 external · 20 broken
Images
23 total · 0 missing alt
Scripts / Styles
46 scripts · 36 stylesheets
JS / CSS size
1.6 KB · 0 B
Page size
130 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- 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://calvin.edu
- Final URL
- https://calvin.edu
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 10 ms
- HTML size
- 130 KB
- Redirect chain
- https://calvin.edu
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does calvin.edu use?
- calvin.edu is built with Drupal, Bootstrap, jQuery, Nginx.
- Is calvin.edu secure (HTTPS)?
- Yes. calvin.edu uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 14, 2026.
- Who hosts calvin.edu?
- Hosting provider information for calvin.edu is not available yet.
- What is calvin.edu's SEO score?
- calvin.edu scored 80/100 for SEO in the latest analysis (great).
- What is calvin.edu's overall website score?
- calvin.edu has an overall SiteGraph score of 92/100, combining SEO, performance, security, and accessibility.
- Has calvin.edu's score changed over time?
- calvin.edu's overall score has improved by 3 points (from 89 to 92) since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card