slatestarcodex.com
Slate Star Codex
Last scanned Jul 26, 2026, 5:47 AM
Overall score
Fair
Summary
This website uses WordPress. SEO is fair (65/100) and accessibility is fair (70/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing meta description.
Top issues to fix
11 issues found · 4 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.
Over half of images are missing alt text
AccessibilityAdd alt attributes to images — screen readers depend on them, and they help image SEO.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
+5 more issues — details in the sections below.
SEO
5 issue(s) found
Performance
523 ms
Security
HTTPS & header checks
Accessibility
1 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.
Meta tags
- Title
- Slate Star Codex
- Description
- Canonical
- Language
- en-US
- Charset
- UTF-8
- Viewport
- width=device-width, min-width=572, initial-scale=1
- Robots meta
- max-image-preview:large
- 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
- slatestarcodex.com
- Valid from
- Jun 3, 2026
- Valid to
- Sep 1, 2026
- Days until expiry
- 37
- SAN domains
- slatestarcodex.com
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 10 · H3 8
Links
144 internal · 122 external · 9 broken
Images
22 total · 21 missing alt
Scripts / Styles
17 scripts · 6 stylesheets
JS / CSS size
247 KB · 14.0 KB
Page size
136 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 structured data (JSON-LD) found
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- Over half of images are missing alt text
Scan details
- Requested URL
- https://slatestarcodex.com
- Final URL
- https://slatestarcodex.com
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 521 ms
- HTML size
- 136 KB
- Redirect chain
- https://slatestarcodex.com
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does slatestarcodex.com use?
- slatestarcodex.com is built with WordPress, jQuery, Nginx.
- Is slatestarcodex.com secure (HTTPS)?
- Yes. slatestarcodex.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 1, 2026.
- Who hosts slatestarcodex.com?
- Hosting provider information for slatestarcodex.com is not available yet.
- What is slatestarcodex.com's SEO score?
- slatestarcodex.com scored 65/100 for SEO in the latest analysis (fair).
- What is slatestarcodex.com's overall website score?
- slatestarcodex.com has an overall SiteGraph score of 75/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card