slitherine.com
Welcome to Slitherine
Last scanned Jul 26, 2026, 11:19 AM
Overall score
Fair
Summary
This website uses Nginx. SEO is fair (65/100) and accessibility is fair (60/100). Security scores poor (35/100) and performance good (80/100). Top issue: Missing meta description.
Top issues to fix
12 issues found · 5 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.
Slow estimated load (5.2s)
PerformanceUse a CDN, enable caching/compression, and cut render-blocking assets — every extra second costs conversions.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
+6 more issues — details in the sections below.
SEO
5 issue(s) found
Performance
5.22 s
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Organization
Company details published in this site's own structured data.
Meta tags
- Title
- Welcome to Slitherine
- Description
- Canonical
- Language
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1, shrink-to-fit=yes
- 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
- *.slitherine.com
- Valid from
- Jul 1, 2026
- Valid to
- Sep 29, 2026
- Days until expiry
- 63
- SAN domains
- *.slitherine.com
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 2 cookie(s) observed
Content & assets
Headings
H1 1 · H2 0 · H3 10
Links
52 internal · 10 external · 6 broken
Images
54 total · 53 missing alt
Scripts / Styles
15 scripts · 13 stylesheets
JS / CSS size
20.8 KB · 0 B
Page size
64.6 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
- Missing <html lang> attribute
Scan details
- Requested URL
- https://slitherine.com
- Final URL
- https://www6.slitherine.com/
- HTTP status
- 200
- HTTP version
- HTTP/1.1
- Response time
- 5.21 s
- HTML size
- 64.6 KB
- Redirect chain
- https://slitherine.com → https://www.slitherine.com/ → https://www6.slitherine.com/
See something wrong on this report? Request a correction
Frequently asked questions
- What technology does slitherine.com use?
- slitherine.com is built with PHP, jQuery, Nginx.
- Is slitherine.com secure (HTTPS)?
- Yes. slitherine.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 29, 2026.
- Who hosts slitherine.com?
- Hosting provider information for slitherine.com is not available yet.
- What is slitherine.com's SEO score?
- slitherine.com scored 65/100 for SEO in the latest analysis (fair).
- What is slitherine.com's overall website score?
- slitherine.com has an overall SiteGraph score of 60/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card