What technology does 4fan.cz use?

4fan.cz is built with Bootstrap, jQuery, Nginx.

Is 4fan.cz secure (HTTPS)?

Yes. 4fan.cz uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 7, 2026.

Hosting provider information for 4fan.cz is not available yet.

What is 4fan.cz's SEO score?

4fan.cz scored 60/100 for SEO in the latest analysis (fair).

What is 4fan.cz's overall website score?

4fan.cz has an overall SiteGraph score of 79/100, combining SEO, performance, security, and accessibility.

4fan.cz

Delist portal

Last scanned Jul 26, 2026, 1:49 PM

Overall score

Fair

Summary

This website uses Nginx. SEO is fair (60/100) and accessibility is excellent (90/100). Security scores fair (70/100) and performance excellent (100/100). Top issue: Missing meta description.

Top issues to fix

10 issues found · 3 high priority

Missing Strict-Transport-Security header
Security
Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
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.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

+4 more issues — details in the sections below.

SEO

6 issue(s) found

100

Performance

737 ms

Security

HTTPS & header checks

Accessibility

1 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Technologies

Detected frameworks, languages, and tools.

Bootstrap jQuery Nginx

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: *.8u.cz
Valid from: Jun 9, 2026
Valid to: Sep 7, 2026
Days until expiry: 40
SAN domains: *.4fan.cz, *.6f.sk, *.8u.cz, *.9e.cz, *.bluefile.cz, *.cekuj.net, *.clanweb.eu, *.funsite.cz, *.g6.cz, *.hys.cz, *.jecool.net, *.jednoduse.cz, *.mablog.eu, *.maweb.eu, *.mzf.cz, *.tode.cz, 4fan.cz, 6f.sk, 8u.cz, 9e.cz, bluefile.cz, cekuj.net, clanweb.eu, funsite.cz, g6.cz, hys.cz, jecool.net, jednoduse.cz, mablog.eu, maweb.eu, mzf.cz, tode.cz

Security headers

Strict-Transport-SecurityMissing
Content-Security-PolicyMissing
X-Frame-OptionsMissing
X-Content-Type-OptionsEnabled
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 0 · H3 0

Links

0 internal · 0 external · 0 broken

Images

1 total · 0 missing alt

Scripts / Styles

3 scripts · 2 stylesheets

JS / CSS size

0 B · 0 B

Page size

1.8 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
Missing OpenGraph tags
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://4fan.cz
Final URL: https://4fan.cz
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 737 ms
HTML size: 1.8 KB
Redirect chain: https://4fan.cz

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