columbia.edu
Just a moment...
Last scanned Jul 29, 2026, 11:00 AM · 15 views
Overall score
Great
Summary
SEO is fair (50/100) and accessibility is excellent (90/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: Missing meta description.
Top issues to fix
8 issues found · 2 high priority
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
TLS certificate expires in 16 days
SecurityRenew soon or enable auto-renewal to avoid a browser-warning outage.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEOAdd og:title/og:description/og:image so shared links render a proper preview card.
+2 more issues — details in the sections below.
SEO
7 issue(s) found
Performance
10 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Score history
-5 overall since Jul 15, 2026
- Overall
- 83
- SEO
- 50
- Security
- 100
- Performance
- 100
- Accessibility
- 90
Meta tags
- Title
- Just a moment...
- Description
- Canonical
- Language
- en-US
- Charset
- UTF-8
- Viewport
- width=device-width,initial-scale=1
- Robots meta
- noindex,nofollow
- Manifest
Technologies
Detected frameworks, languages, and tools.
No technologies detected.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- Cloudflare
- 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
- Google Trust Services
- Subject
- columbia.edu
- Valid from
- May 17, 2026
- Valid to
- Aug 15, 2026
- Days until expiry
- 16
- SAN domains
- columbia.edu, *.columbia.edu
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyEnabled
Compression: gzip · 1 cookie(s) observed
Content & assets
Headings
H1 0 · H2 0 · H3 0
Links
0 internal · 0 external · 0 broken
Images
0 total · 0 missing alt
Scripts / Styles
1 scripts · 0 stylesheets
JS / CSS size
3.0 KB · 1.2 KB
Page size
5.3 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing meta description
- Missing canonical link
- No H1 heading found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- No H1 heading found
Scan details
- Requested URL
- https://columbia.edu
- Final URL
- https://columbia.edu
- HTTP status
- 403
- HTTP version
- HTTP/2
- Response time
- 10 ms
- HTML size
- 5.3 KB
- Redirect chain
- https://columbia.edu
See something wrong on this report? Request a correction
Frequently asked questions
- What technology does columbia.edu use?
- We did not detect any specific technologies for columbia.edu in the latest scan.
- Is columbia.edu secure (HTTPS)?
- Yes. columbia.edu uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Aug 15, 2026.
- Who hosts columbia.edu?
- Hosting provider information for columbia.edu is not available yet.
- What is columbia.edu's SEO score?
- columbia.edu scored 50/100 for SEO in the latest analysis (fair).
- What is columbia.edu's overall website score?
- columbia.edu has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.
- Has columbia.edu's score changed over time?
- columbia.edu's overall score has declined by 5 points (from 88 to 83) since Jul 15, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card