nsidc.org
Homepage | National Snow and Ice Data Center
Last scanned Aug 2, 2026, 5:00 PM · 6 views
Overall score
Great
Summary
This website uses Apache. SEO is fair (65/100) and accessibility is excellent (100/100). Security scores good (80/100) and performance excellent (100/100). Top issue: Missing meta description.
Top issues to fix
8 issues found · 3 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
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.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
+2 more issues — details in the sections below.
SEO
5 issue(s) found
Performance
536 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
+3 overall since Jul 26, 2026
- Overall
- 85
- SEO
- 65
- Security
- 80
- Performance
- 100
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
Meta tags
- Title
- Homepage | National Snow and Ice Data Center
- Description
- Canonical
- https://nsidc.org/home
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1, shrink-to-fit=no
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- 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
- k2.colorado.edu
- Valid from
- Jul 14, 2026
- Valid to
- Oct 12, 2026
- Days until expiry
- 70
- SAN domains
- eloka.nsidc.org, extranet.nsidc.org, igloo.nsidc.org, inside.nsidc.org, integration.eloka.nsidc.org, integration.inside.nsidc.org, integration.nsidc.org, k2.colorado.edu, nsidc.org, qa.eloka.nsidc.org, qa.inside.nsidc.org, qa.nsidc.org, staging.eloka.nsidc.org, staging.extranet.nsidc.org, staging.inside.nsidc.org, staging.nsidc.org, www.nsidc.org
Security headers
- Strict-Transport-SecurityMissing
- 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 7 · H3 37
Links
102 internal · 11 external · 20 broken
Images
40 total · 0 missing alt
Scripts / Styles
16 scripts · 10 stylesheets
JS / CSS size
10.8 KB · 2.2 KB
Page size
189 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing meta description
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://nsidc.org
- Final URL
- https://nsidc.org/home
- HTTP status
- 200
- HTTP version
- HTTP/1.1
- Response time
- 533 ms
- HTML size
- 189 KB
- Redirect chain
- https://nsidc.org → https://nsidc.org/home
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does nsidc.org use?
- nsidc.org is built with Drupal, Bootstrap, jQuery, Apache.
- Is nsidc.org secure (HTTPS)?
- Yes. nsidc.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 12, 2026.
- Who hosts nsidc.org?
- Hosting provider information for nsidc.org is not available yet.
- What is nsidc.org's SEO score?
- nsidc.org scored 65/100 for SEO in the latest analysis (fair).
- What is nsidc.org's overall website score?
- nsidc.org has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.
- Has nsidc.org's score changed over time?
- nsidc.org's overall score has improved by 3 points (from 82 to 85) since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card