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cuzk.cz

https://cuzk.cz· First analyzed 02 May 2026· Updated 02 May 2026
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cuzk.cz
Desktop screenshot of cuzk.cz
Mobile screenshot of cuzk.cz
Mobile

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Hosting Provider

Radware Inc

IP Address

167.86.50.119

Site Location

🇨🇿 Czech Republicvia tld

Server Location

🇳🇱 Amsterdam, Netherlands

ASN

AS48851

Organization

Radware Inc

Nameservers

ns13.cuzk.cz.ns12.cuzk.cz.ns11.cuzk.cz.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
626 ms10%
Speed Index
814 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
209 KB
39 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Radware Inc

Technology Stack

4 Technologies Detected

Libraries

1
jQueryv1.12.4

UI Components

1
Fancybox

CSS Frameworks

1
Tailwind CSS

Customer Support

1
Zendesk

SEO Analysis

D52/100
14
8
2
Meta Tags4/15
Content11/12
Headings8/8
Technical10/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
C
cuzk.czcuzk.cz

ČÚZK - Úvod

No description available for this page.

Title Length11 chars

Recommended: 50-60 chars (~68px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing meta description — important for click-through rates in SERPs
  • • Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

10 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

2 rules

Local SEO

Local Search Readiness

3/100
Poor
1 14 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

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AI & LLM Readiness

F35/100
Bot Access
20/25
Machine Read.
9/25
Schema Data
0/25
Citation
6/25

AI Bot Access

14/14 accessible
AI Search
OAI-SearchBot
PerplexityBot
Claude-SearchBot
Gemini-Deep-Research
DuckAssistBot
Training
GPTBot
ClaudeBot
Google-Extended
Meta-ExternalAgent
Bytespiderinfo
Amazonbot
Applebot-Extended
CCBotinfo
Fetch
ChatGPT-User

Machine Readability

llms.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
def. lists
Text ratio:9%
Words:701
Token eff.:Optimal
Sections/1K:11.4
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary14w
Descriptive Headingsavg 2.4w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (12)
AI readiness recommendation preview...
Upgrade to view recommendations

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Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
C
65/100
10
Passed
6
Critical
0
Warnings
Images & Alt Text
10/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
11/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
15/15
Verifies form fields have labels, error messages are clear, and inputs are properly associated.
Color & Contrast
15/15
Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
Keyboard & Focus
7/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
7/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
55/100
A+
26 mg
CO₂e / view
209.1 KB
Page Weight
95%
Cleaner Than
New Visitor
30 mg
vs
Returning (cached)
15 mg
Annual (10K/mo)
3.1 kg
Emission Segments
Data Center
6 mg
Network
6 mg
Device
14 mg
Resource Breakdown
JavaScript
114.6 KB
Images
8.0 KB
CSS
50.7 KB
HTML
23.3 KB
Other
12.5 KB
Green Hosting Not Verified
Radware Inc
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

75%Good
Critical / Transactional

HTTPS

No WAF

22d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (3072 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

24.02.2026

Valid Until

25.05.2026

Subject Alternative Names (6)

cuzk.czcuzk.gov.czruian.cuzk.czruian.cuzk.gov.czwww.cuzk.czwww.cuzk.gov.cz

SHA-256 Fingerprint

3E:5B:60:CA:95:9A:66:76:9A:F8:85:7D:45:61:2B:57:9F:60:23:D7...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🔴 No Cache(private, no-store, must-revalidate)
content-encoding
📦 Gzip(gzip)
content-security-policy
default-src 'self'; img-src 'self' data: *.cuzk.cz *.cuzk.go...
content-type
text/html; charset=utf-8
date
Sat, 02 May 2026 05:10:28 GMT
permissions-policy
camera=(), microphone=(), geolocation=(), payment=(), usb=()...
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

75

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (3)

post23.cuzk.cz
post22.cuzk.cz
post21.cuzk.cz

Domain Information

cuzk.cz

Domain Age
29y 2m

Created

19.02.1997

Expires

06.10.2026

Last Updated

23.06.2015

Registrar

REG-WEBGLOBE

DNSSEC
Not Enabled

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
F
39/100
Not Mobile Friendly1 breakpoint
Viewport Meta
The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
Responsive Design
Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
Touch Icons
Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
Readable Font Size
Base font size should be at least 16px on mobile to ensure text is readable without zooming.
Relative Units
Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
No H-Scroll Risk
No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
Tap Targets OK
Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
No Fixed Widths
No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

arial

WCAG Partial
62/100
Readability
/30
12/30

12px · LH 1.50

Hierarchy
/20
16/20

2.2x ratio · ✓ H1→H6

WCAG
/25
14/25

2.43:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

arial

Sans26px

Body Font

arial

Sans12px

Contrast Ratio

2.43:1

18 issues

Reading Comfort

~76 CPL

Wide lines
26px
h1
19px
h2
17px
h3
12px
p

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ Wide lines: ~76 chars/line. Use max-width: 65ch for comfortable reading.

❌ Very complex text: Flesch score 27/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 18 elements below WCAG AA threshold (min 2.4:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

Flesch 27

Color Palette

6 unique colors
2.85:1 Fail Light
#ffffff
Background· 59.4%
#9f9890
Other· 5.5%
#ffe5c0
Accent· 15.599999999999998%
#dbecfa
Primary· 11.700000000000001%
#42607d
Secondary· 4.4%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

15 Resources

9
Scripts
6
Styles
0
Async
0
Defer

Top Script Sources

local(9)

Website Identity

cuzk.cz

29 years old
Location detected: 🇨🇿 Czech Republicvia tld
REG-WEBGLOBEcs-CZ

Social Profiles

X (Twitter)

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Last analyzed: 02 May 2026 at 05:10

Historical Analysis & Change Tracking