psi.edu
Planetary Science Institute | Discovery & Public Education in Planetary Science
Last scanned Jul 27, 2026, 3:43 PM
Overall score
Great
Summary
The Planetary Science Institute (PSI) is a private nonprofit organization dedicated to scientific discovery and public education in planetary science. This website uses WordPress hosted on Cloudflare behind Cloudflare CDN. SEO is good (85/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance good (80/100). Top issue: Title longer than 60 characters.
The Planetary Science Institute (PSI) is a private nonprofit organization dedicated to scientific discovery and public education in planetary science.
- United States
- Hosted on Cloudflare
Top issues to fix
6 issues found · 2 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Slow estimated load (4.7s)
PerformanceUse a CDN, enable caching/compression, and cut render-blocking assets — every extra second costs conversions.
Title longer than 60 characters
SEOShorten the title to under 60 characters so search results don't truncate it.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
1 broken link on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
3 issue(s) found
Performance
4.72 s
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Contact
Email, phone, and address published on this site's own pages.
- buxner@psi.edu
Meta tags
- Title
- Planetary Science Institute | Discovery & Public Education in Planetary Science
- Description
- The Planetary Science Institute (PSI) is a private nonprofit organization dedicated to scientific discovery and public education in planetary science.
- Canonical
- https://www.psi.edu/
- Language
- en-US
- Charset
- UTF-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- follow, index, max-snippet:-1, max-video-preview:-1, max-image-preview:large
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 104.20.16.38
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- psi.edu
- Valid from
- Jun 20, 2026
- Valid to
- Sep 18, 2026
- Days until expiry
- 52
- SAN domains
- psi.edu, *.psi.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 2 · H2 6 · H3 9
Links
56 internal · 17 external · 1 broken
Images
35 total · 1 missing alt
Scripts / Styles
34 scripts · 15 stylesheets
JS / CSS size
32.8 KB · 35.0 KB
Page size
158 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 9
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Title longer than 60 characters
- Multiple H1 headings found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://psi.edu
- Final URL
- https://www.psi.edu/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 4.72 s
- HTML size
- 158 KB
- Redirect chain
- https://psi.edu → https://www.psi.edu/
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Frequently asked questions
- What technology does psi.edu use?
- psi.edu is built with PHP, WordPress, jQuery, Google Analytics, Cloudflare Analytics.
- Is psi.edu secure (HTTPS)?
- Yes. psi.edu uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Sep 18, 2026.
- Who hosts psi.edu?
- psi.edu is hosted on Cloudflare, behind Cloudflare CDN.
- What is psi.edu's SEO score?
- psi.edu scored 85/100 for SEO in the latest analysis (great).
- What is psi.edu's overall website score?
- psi.edu has an overall SiteGraph score of 88/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card