What technology does mrk.cz use?

mrk.cz is built with PHP, jQuery, Google Analytics, Google Ads, Apache.

Is mrk.cz secure (HTTPS)?

Yes. mrk.cz uses TLS 1.3 with a certificate issued by Asseco Data Systems S.A., valid until Jan 14, 2027.

Hosting provider information for mrk.cz is not available yet.

What is mrk.cz's SEO score?

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

What is mrk.cz's overall website score?

mrk.cz has an overall SiteGraph score of 69/100, combining SEO, performance, security, and accessibility.

mrk.cz

MRK.cz - St�le na ryb�ch - ryby a ryba�en�

Last scanned Aug 24, 2026, 1:23 PM

Overall score

Fair

Summary

Ryby a ryba�en�, zpravodajstv� pro ryb��e, aktu�ln� informace od vody. This website uses PHP. SEO is fair (60/100) and accessibility is good (75/100). Security scores fair (65/100) and performance good (80/100). Top issue: Missing canonical link.

Ryby a ryba�en�, zpravodajstv� pro ryb��e, aktu�ln� informace od vody.

Top issues to fix

14 issues found · 4 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.
Slow estimated load (4.1s)
Performance
Use a CDN, enable caching/compression, and cut render-blocking assets — every extra second costs conversions.
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.

+8 more issues — details in the sections below.

SEO

6 issue(s) found

Performance

4.12 s

Security

HTTPS & header checks

Accessibility

2 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.

Organization

Company details published in this site's own structured data.

Ryby a ryba�en�, zpravodajstv� pro ryb��e, aktu�ln� informace od vody.

Facebook YouTube

Meta tags

Title: MRK.cz - St�le na ryb�ch - ryby a ryba�en�
Description: Ryby a ryba�en�, zpravodajstv� pro ryb��e, aktu�ln� informace od vody.
Canonical
Language: cs
Charset: iso-8859-2
Viewport: width=device-width, initial-scale=1.0
Robots meta: index, follow
Manifest: https://www.mrk.cz/manifest.json

Technologies

Detected frameworks, languages, and tools.

PHP jQuery Google Analytics Google Ads Apache

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: Asseco Data Systems S.A.
Subject: *.mrk.cz
Valid from: Jan 14, 2026
Valid to: Jan 14, 2027
Days until expiry: 141
SAN domains: *.mrk.cz, mrk.cz

Security headers

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

Compression: gzip · 2 cookie(s) observed

Content & assets

Headings

H1 0 · H2 21 · H3 87

Links

158 internal · 22 external · 20 broken

Images

24 total · 7 missing alt

Scripts / Styles

22 scripts · 5 stylesheets

JS / CSS size

4.2 KB · 1.5 KB

Page size

64.9 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

Scan details

Requested URL: https://mrk.cz
Final URL: https://www.mrk.cz/
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 4.12 s
HTML size: 64.9 KB
Redirect chain: https://mrk.cz → https://www.mrk.cz/

See something wrong on this report? Request a correction

Same technology stack

htmedia.in

HT Media: India's Leading Print & Digital Media Company

wordpressphpapache

gemorion.in

Industrial Chiller Manufacturers | Gem Orion, Coimbatore

apachephpgoogle-analytics

riomedia.cz

Nej.cz - Internet, Televize, Volání

apachegoogle-analyticsgoogle-ads

wemakescholars.com

#1 Platform to fund your Study Abroad - Scholarships, Education loan | WeMakeScholars

apachemeta-pixelgoogle-analytics

AWS

nej.cz

Nej.cz - Internet, Televize, Volání

apachegoogle-analyticsgoogle-ads

arcsuspension.in

Home : ARC Suspension

apachegoogle-analyticsmeta-pixel

DigitalOcean

Frequently asked questions

What technology does mrk.cz use?: mrk.cz is built with PHP, jQuery, Google Analytics, Google Ads, Apache.
Is mrk.cz secure (HTTPS)?: Yes. mrk.cz uses TLS 1.3 with a certificate issued by Asseco Data Systems S.A., valid until Jan 14, 2027.
Who hosts mrk.cz?: Hosting provider information for mrk.cz is not available yet.
What is mrk.cz's SEO score?: mrk.cz scored 60/100 for SEO in the latest analysis (fair).
What is mrk.cz's overall website score?: mrk.cz has an overall SiteGraph score of 69/100, combining SEO, performance, security, and accessibility.