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centrum.cz

Centrum.cz: Fandíme dobrému obsahu

Last scanned Jul 21, 2026, 12:33 PM · 1 view

66

Overall score

Fair

Top issues to fix

8 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.

  • No H1 heading found

    SEO

    Add 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

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • 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.

+2 more issues — details in the sections below.

Summary

Centrum.cz je český internetový portál nabízející e-mail, aktuální zpravodajství, počasí a další zajímavé služby. This website uses WordPress hosted on Cloudflare behind Cloudflare CDN. SEO is good (80/100) and accessibility is excellent (90/100). Security scores fair (65/100) and performance poor (30/100). Top issue: Missing canonical link.

80

SEO

3 issue(s) found

30

Performance

3.49 s

65

Security

HTTPS & header checks

90

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.

Meta tags

Title
Centrum.cz: Fandíme dobrému obsahu
Description
Centrum.cz je český internetový portál nabízející e-mail, aktuální zpravodajství, počasí a další zajímavé služby.
Canonical
Language
cs
Charset
utf-8
Viewport
width=device-width, initial-scale=1
Robots meta
index, follow
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

Next.jsWordPressDrupalMeta Pixel

Hosting & CDN

Hosting provider
Cloudflare
CDN provider
Cloudflare
IP address
104.26.12.212
ASN
AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)

DNS records

TypeValue
A
  • 104.26.12.212
  • 172.67.72.210
  • 104.26.13.212
AAAA
  • 2606:4700:20::681a:dd4
  • 2606:4700:20::ac43:48d2
  • 2606:4700:20::681a:cd4
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Google Trust Services
Subject
centrum.cz
Valid from
Jun 16, 2026
Valid to
Sep 14, 2026
Days until expiry
54
SAN domains
centrum.cz, *.centrum.cz

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 7 · H3 0

Links

262 internal · 42 external · 0 broken

Images

160 total · 0 missing alt

Scripts / Styles

92 scripts · 1 stylesheets

JS / CSS size

4.8 MB · 84.8 KB

Page size

1.3 MB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
0
sitemap.xml
Found
URLs in sitemap
820

SEO issues

  • Missing canonical link
  • No H1 heading found
  • Missing OpenGraph tags

Accessibility issues

  • No H1 heading found

Scan details

Requested URL
https://centrum.cz
Final URL
https://www.centrum.cz/
HTTP status
200
HTTP version
HTTP/2
Response time
3.46 s
HTML size
1.3 MB
Redirect chain
https://centrum.cz → https://www.centrum.cz/

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Frequently asked questions

What technology does centrum.cz use?
centrum.cz is built with Next.js, WordPress, Drupal, Meta Pixel.
Is centrum.cz secure (HTTPS)?
Yes. centrum.cz uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Sep 14, 2026.
Who hosts centrum.cz?
centrum.cz is hosted on Cloudflare, behind Cloudflare CDN.
What is centrum.cz's SEO score?
centrum.cz scored 80/100 for SEO in the latest analysis (great).
What is centrum.cz's overall website score?
centrum.cz has an overall SiteGraph score of 66/100, combining SEO, performance, security, and accessibility.