castle.io
Castle – Stop bots and account abuse in minutes
Last scanned Aug 2, 2026, 10:00 PM · 10 views
Overall score
Excellent
Summary
A complete suite of SDKs and APIs to monitor users, block bots, and stop in-app fraud. This website uses Google Analytics behind Netlify CDN. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance good (80/100). Top issue: robots.txt not found.
Castle
A complete suite of SDKs and APIs to monitor users, block bots, and stop in-app fraud.
Top issues to fix
4 issues found · 1 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
20 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
2 issue(s) found
Performance
85 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
-3 overall since Jul 26, 2026
- Overall
- 90
- SEO
- 90
- Security
- 90
- Performance
- 80
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
Castle
A complete suite of SDKs and APIs to monitor users, block bots, and stop in-app fraud.
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- Castle – Stop bots and account abuse in minutes
- Description
- A complete suite of SDKs and APIs to monitor users, block bots, and stop in-app fraud.
- Canonical
- https://castle.io/
- Language
- en
- Charset
- UTF-8
- Viewport
- width=device-width
- Robots meta
- index, follow
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- Netlify
- 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
- castle.io
- Valid from
- Jul 23, 2026
- Valid to
- Oct 21, 2026
- Days until expiry
- 79
- SAN domains
- castle.io, www.castle.io
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 15 · H3 37
Links
18 internal · 17 external · 20 broken
Images
0 total · 0 missing alt
Scripts / Styles
14 scripts · 1 stylesheets
JS / CSS size
10.0 KB · 1.5 KB
Page size
1.0 MB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://castle.io
- Final URL
- https://castle.io
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 64 ms
- HTML size
- 1.0 MB
- Redirect chain
- https://castle.io
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does castle.io use?
- castle.io is built with Astro, Google Analytics.
- Is castle.io secure (HTTPS)?
- Yes. castle.io uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 21, 2026.
- Who hosts castle.io?
- Hosting provider information for castle.io is not available yet.
- What is castle.io's SEO score?
- castle.io scored 90/100 for SEO in the latest analysis (excellent).
- What is castle.io's overall website score?
- castle.io has an overall SiteGraph score of 90/100, combining SEO, performance, security, and accessibility.
- What company operates castle.io?
- castle.io is operated by Castle. A complete suite of SDKs and APIs to monitor users, block bots, and stop in-app fraud.
- Has castle.io's score changed over time?
- castle.io's overall score has declined by 3 points (from 93 to 90) since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card