checkio.org
CheckiO - coding games and programming challenges for beginner and advanced
Last scanned Jul 27, 2026, 10:43 AM · 2 views
Overall score
Great
Summary
This website uses Nginx hosted on AKAMAI-LINODE-AP - Akamai Connected Cloud, SG. SEO is fair (65/100) and accessibility is good (85/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.
- United States
- Hosted on AKAMAI-LINODE-AP - Akamai Connected Cloud, SG
Top issues to fix
9 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.
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
2 cookies without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Title longer than 60 characters
SEOShorten the title to under 60 characters so search results don't truncate it.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
+3 more issues — details in the sections below.
SEO
5 issue(s) found
Performance
253 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Contact
Email, phone, and address published on this site's own pages.
- a.lyabah@checkio.org
Meta tags
- Title
- CheckiO - coding games and programming challenges for beginner and advanced
- Description
- Canonical
- Language
- en
- Charset
- UTF-8
- Viewport
- width=device-width, initial-scale=1.0
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- AKAMAI-LINODE-AP - Akamai Connected Cloud, SG
- CDN provider
- —
- IP address
- 74.207.241.71
- ASN
- AS63949 (AKAMAI-LINODE-AP - Akamai Connected Cloud, SG)
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
- checkio.org
- Valid from
- Jul 2, 2026
- Valid to
- Sep 30, 2026
- Days until expiry
- 65
- SAN domains
- checkio.org
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: gzip · 2 cookie(s) observed
Content & assets
Headings
H1 2 · H2 0 · H3 0
Links
5 internal · 9 external · 2 broken
Images
9 total · 4 missing alt
Scripts / Styles
16 scripts · 3 stylesheets
JS / CSS size
1009 KB · 49.2 KB
Page size
24.3 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 2
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Title longer than 60 characters
- Missing meta description
- Missing canonical link
- Multiple H1 headings found
- No structured data (JSON-LD) found
Accessibility issues
- More than 20% of images are missing alt text
Scan details
- Requested URL
- https://checkio.org
- Final URL
- https://checkio.org
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 253 ms
- HTML size
- 24.3 KB
- Redirect chain
- https://checkio.org
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does checkio.org use?
- checkio.org is built with Django, Google Analytics, Nginx.
- Is checkio.org secure (HTTPS)?
- Yes. checkio.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 30, 2026.
- Who hosts checkio.org?
- checkio.org is hosted on AKAMAI-LINODE-AP - Akamai Connected Cloud, SG.
- What is checkio.org's SEO score?
- checkio.org scored 65/100 for SEO in the latest analysis (fair).
- What is checkio.org's overall website score?
- checkio.org has an overall SiteGraph score of 84/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card