websudoku.com
Web Sudoku - Billions of Free Sudoku Puzzles to Play Online
Last scanned Jul 26, 2026, 5:47 AM
Overall score
Fair
Summary
Play unlimited sudoku puzzles online. This website uses PHP hosted on PAIR-NETWORKS - pair Networks, US. SEO is fair (60/100) and accessibility is good (80/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing canonical link.
Play unlimited sudoku puzzles online. Four levels from Easy to Evil. Compatible with all browsers, tablets and phones including iPhone, iPad and Android.
- United States
- Hosted on PAIR-NETWORKS - pair Networks, US
Top issues to fix
12 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.
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
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.
1 cookie without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
+6 more issues — details in the sections below.
SEO
6 issue(s) found
Performance
656 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Organization
Company details published in this site's own structured data.
Play unlimited sudoku puzzles online. Four levels from Easy to Evil. Compatible with all browsers, tablets and phones including iPhone, iPad and Android.
Meta tags
- Title
- Web Sudoku - Billions of Free Sudoku Puzzles to Play Online
- Description
- Play unlimited sudoku puzzles online. Four levels from Easy to Evil. Compatible with all browsers, tablets and phones including iPhone, iPad and Android.
- Canonical
- Language
- Charset
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- PAIR-NETWORKS - pair Networks, US
- CDN provider
- —
- IP address
- 66.39.22.227
- ASN
- AS7859 (PAIR-NETWORKS - pair Networks, US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Sectigo Limited
- Subject
- *.websudoku.com
- Valid from
- Oct 5, 2025
- Valid to
- Nov 5, 2026
- Days until expiry
- 102
- SAN domains
- *.websudoku.com, websudoku.com
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: none · 1 cookie(s) observed
Content & assets
Headings
H1 0 · H2 0 · H3 0
Links
0 internal · 0 external · 0 broken
Images
0 total · 0 missing alt
Scripts / Styles
1 scripts · 0 stylesheets
JS / CSS size
38 B · 0 B
Page size
1.0 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing canonical link
- No H1 heading found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- No H1 heading found
- Missing <html lang> attribute
Scan details
- Requested URL
- https://websudoku.com
- Final URL
- https://websudoku.com
- HTTP status
- 200
- HTTP version
- HTTP/1.1
- Response time
- 656 ms
- HTML size
- 1.0 KB
- Redirect chain
- https://websudoku.com
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does websudoku.com use?
- websudoku.com is built with PHP, Apache.
- Is websudoku.com secure (HTTPS)?
- Yes. websudoku.com uses TLS 1.3 with a certificate issued by Sectigo Limited, valid until Nov 5, 2026.
- Who hosts websudoku.com?
- websudoku.com is hosted on PAIR-NETWORKS - pair Networks, US.
- What is websudoku.com's SEO score?
- websudoku.com scored 60/100 for SEO in the latest analysis (fair).
- What is websudoku.com's overall website score?
- websudoku.com has an overall SiteGraph score of 75/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card