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ctk.cz

https://ctk.cz· First analyzed 12 May 2026· Updated 12 May 2026
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ctk.cz
Desktop screenshot of ctk.cz
Mobile screenshot of ctk.cz
Mobile

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Hosting Provider

Master Internet s.r.o.

IP Address

80.79.27.48

Site Location

🇨🇿 Czech Republicvia phone

Server Location

🇨🇿 Brno-střed, Czechia

ASN

AS24971

Organization

Master Internet s.r.o.

Nameservers

ns.ctk.cz.ns.ceskenoviny.cz.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
725 ms10%
Speed Index
942 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
131 KB
28 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Master Internet s.r.o.

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

8 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Facebook Pixel

Libraries

1
jQueryv2.2.4

UI Components

1
Lightbox

Other

1
Modernizr

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

SEO Analysis

C67/100
19
6
1
Meta Tags7/15
Content12/12
Headings8/8
Technical14/25
E-E-A-T3/7
Images1/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
C
ctk.czctk.cz

Homepage | ČTK

ČTK - Česká tisková kancelář. Informace o agentuře, novinky, zpravodajství, nabídka služeb

Title Length14 chars

Recommended: 50-60 chars (~87px / 580px)

Description Length90 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (11/11) — critical for accessibility and SEO

7 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

2 rules

Allows all crawlers

Local SEO

Local Search Readiness

12/100
Poor
4 11 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

D46/100
Bot Access
20/25
Machine Read.
13/25
Schema Data
0/25
Citation
13/25

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
data-nosnippet

Machine Readability

llms.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
navheader/footer
Text ratio:8%
Words:521
Token eff.:Optimal
Sections/1K:25
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary12w
Descriptive Headingsavg 8.6w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (7)
AI readiness recommendation preview...
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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.
B
76/100
14
Passed
1
Critical
0
Warnings
Images & Alt Text
5/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
20/20
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
13/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
8/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
1 recommendation
  • •Accessibility recommendation preview...
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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.
53/100
A+
16 mg
CO₂e / view
131.3 KB
Page Weight
95%
Cleaner Than
New Visitor
19 mg
vs
Returning (cached)
9 mg
Annual (10K/mo)
1.9 kg
Emission Segments
Data Center
4 mg
Network
4 mg
Device
9 mg
Resource Breakdown
JavaScript
64.9 KB
CSS
30.2 KB
Fonts
834 B
HTML
8.5 KB
Other
26.8 KB
Green Hosting Not Verified
Master Internet s.r.o.
5 recommendations
  • •Carbon footprint recommendation preview...
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F

Security Score

36%Critical
Interactive

HTTPS

No WAF

163d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

04.11.2025

Valid Until

22.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.ctk.czctk.cz

SHA-256 Fingerprint

03:A5:66:16:CE:F2:A5:7E:97:CA:F2:58:1E:0E:B4:37:C3:84:69:39...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-store, no-cache, must-revalidate)
content-encoding
📦 Gzip(gzip)
content-length
8444
content-type
text/html; charset=UTF-8
date
Tue, 12 May 2026 13:15:50 GMT
expires
Thu, 19 Nov 1981 08:52:00 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

73

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

irp2.ctk.cz
irp3.ctk.cz
support.clapix.com
irp.ctk.cz

+1 more

Domain Information

ctk.cz

Domain Age
30y 8m

Created

27.08.1995

Expires

26.10.2030

Last Updated

28.07.2025

Registrar

REG-WEBGLOBE

DNSSEC
Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner
Cookiebot
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Cookiebot

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.
D
58/100
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.
Viewport
width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=0
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Work Sans

WCAG Partial
71/100
Readability
/30
24/30

17px · LH 1.59

Hierarchy
/20
18/20

2.35x ratio · ✓ H1→H6

WCAG
/25
14/25

1.22:1 min contrast

Performance
/25
15/25

1 font · 1 req

Heading Font

Work Sans

Sans40px

Body Font

Work Sans

Sans17px

Contrast Ratio

1.22:1

3 issues

Reading Comfort

~43 CPL

Narrow lines
40px
h1
30px
h2
40px
h3
17px
p
Minor Second
Scale

✅ Excellent readability: 17px body text is ideal for all devices.

✅ Optimal line spacing: 1.59 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 46/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 1.2:1).

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

✅ Strong hierarchy: Headlines are 2.4x larger than body text.

GGoogle FontsFlesch 47

Color Palette

9 unique colors
Light
#ffffff
Primary· 34.99999999999999%
#2f355a
Secondary· 18.5%
#000102
Background· 17.4%
#0174a3
Primary· 6.8%
#50406b
Secondary· 5.1%
#1a1c31
Secondary· 4.9%
#4d7197
Secondary· 4.7%
#c1ced5
Secondary· 3.9%

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

12 Resources

8
Scripts
4
Styles
1
Async
2
Defer

Top Script Sources

local(7)googletagmanager.com(1)

Website Identity

ctk.cz

ctk@ctk.cz
+420222098111
30 years old
Location detected: 🇨🇿 Czech Republicvia phone
REG-WEBGLOBEcs

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Last analyzed: 12 May 2026 at 13:16

Historical Analysis & Change Tracking