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?

Hosting provider information for checkio.org is not available yet.

What is checkio.org's SEO score?

checkio.org scored 60/100 for SEO in the latest analysis (fair).

What is checkio.org's overall website score?

checkio.org has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.

Has checkio.org's score changed over time?

checkio.org's overall score has declined by 1 point (from 84 to 83) since Jul 27, 2026.

checkio.org

CheckiO - coding games and programming challenges for beginner and advanced

Last scanned Aug 4, 2026, 11:00 AM · 13 views

Overall score

Great

Summary

This website uses Nginx. SEO is fair (60/100) and accessibility is good (85/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.

Top issues to fix

10 issues found · 2 high priority

Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing meta description
SEO
Add a ~150-character meta description to control your search-result snippet and lift click-through rate.
2 cookies without Secure/HttpOnly flags
Security
Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Title longer than 60 characters
SEO
Shorten the title to under 60 characters so search results don't truncate it.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.
Multiple H1 headings found
SEO
Keep a single H1 per page and demote the others to H2/H3.

+4 more issues — details in the sections below.

SEO

6 issue(s) found

100

Performance

281 ms

Security

HTTPS & header checks

Accessibility

1 issue(s) found

Score history

-1 overall since Jul 27, 2026

Overall: 83
SEO: 60
Security: 90
Performance: 100
Accessibility: 85

Contact

Email, phone, and address published on this site's own pages.

Email: 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.

Django Google Analytics Nginx

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: 74.207.241.71
ASN: —

DNS records

Type	Value
A	74.207.241.71
AAAA	—
MX	aspmx.l.google.com alt4.aspmx.l.google.com alt3.aspmx.l.google.com alt2.aspmx.l.google.com alt1.aspmx.l.google.com
TXT	google-site-verification=gQkefe4hzBtMNw5Vl2dE_Z_x-VmyuxbfMDGxdIy9YM0 google-site-verification=MpeZ8gVHCFI4EhQ87rl0OA8KFsuKomBg7rtSuhO-qzM
NS	ns1.digitalocean.com ns2.digitalocean.com ns3.digitalocean.com
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: 57
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

932 KB · 49.2 KB

Page size

24.3 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 2
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Title longer than 60 characters
Missing meta description
Missing canonical link
Multiple H1 headings found
No structured data (JSON-LD) found
sitemap.xml not found

Scan details

Requested URL: https://checkio.org
Final URL: https://checkio.org
HTTP status: 200
HTTP version: HTTP/2
Response time: 281 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?: Hosting provider information for checkio.org is not available yet.
What is checkio.org's SEO score?: checkio.org scored 60/100 for SEO in the latest analysis (fair).
What is checkio.org's overall website score?: checkio.org has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.
Has checkio.org's score changed over time?: checkio.org's overall score has declined by 1 point (from 84 to 83) since Jul 27, 2026.