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ctu.cz

https://ctu.cz· First analyzed 14 May 2026· Updated 14 May 2026
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ctu.cz
Desktop screenshot of ctu.cz
Mobile screenshot of ctu.cz
Mobile

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Hosting Provider

Tlap175

IP Address

185.178.175.96

Site Location

🇨🇿 Czech Republicvia tld

Server Location

🇨🇿 Prague, Czechia

ASN

AS206548

Organization

Tlap175

Server

Apache

Nameservers

beta.ns.active24.cz.gama.ns.active24.sk.alfa.ns.active24.cz.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
584 ms10%
Speed Index
759 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
846 KB
111 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Drupal

Technology Stack

8 Technologies Detected

Libraries

2
jQueryv1.12
jQuery UI

UI Components

2
Slick CarouselLightbox

CSS Frameworks

2
Bootstrap
Tailwind CSS

Fonts

1
Google Fonts

Web Servers

1
Apache

SEO Analysis

D56/100
16
7
2
Meta Tags4/15
Content11/12
Headings8/8
Technical15/25
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
C
ctu.czctu.cz

Český telekomunikační úřad

No description available for this page.

Title Length26 chars

Recommended: 50-60 chars (~159px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing meta description — important for click-through rates in SERPs
  • • Most images missing alt text (10/19) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

779 URLs

robots.txt

84 rules

Local SEO

Local Search Readiness

9/100
Poor
3 12 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

F38/100
Bot Access
17/25
Machine Read.
12/25
Schema Data
0/25
Citation
9/25

AI Bot Access

10/14 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
navheader/footer
Text ratio:16%
Words:2,969
Token eff.:Optimal
Sections/1K:2.4
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary57w
Descriptive Headingsavg 3w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
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.
A
84/100
14
Passed
1
Critical
2
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
17/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
12/15
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
7/15
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.
38/100
B
105 mg
CO₂e / view
846.3 KB
Page Weight
80%
Cleaner Than
New Visitor
120 mg
vs
Returning (cached)
60 mg
Annual (10K/mo)
12.6 kg
Emission Segments
Data Center
23 mg
Network
25 mg
Device
56 mg
Resource Breakdown
JavaScript
350.8 KB
Images
249.5 KB
CSS
224.5 KB
Fonts
2.0 KB
HTML
19.6 KB
Green Hosting Not Verified
Tlap175
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

76%Good
Interactive

HTTPS

No WAF

65d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

20.04.2026

Valid Until

19.07.2026

Subject Alternative Names (6)

ctu.czctu.euctu.gov.czwww.ctu.czwww.ctu.euwww.ctu.gov.cz

SHA-256 Fingerprint

24:E1:0A:1F:65:63:0B:0D:DA:34:F6:44:0A:3D:4D:B6:F5:83:3E:A5...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

access-control-allow-origin
*
cache-control
🔴 No Cache(no-cache, must-revalidate)
content-encoding
⚡ Brotli(br)
content-language
cs
content-length
19777
content-security-policy
default-src * 'unsafe-inline' 'unsafe-eval'; script-src * 'u...
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

93

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

ctu-cz.j-v1.mx.microsoft

Domain Information

ctu.cz

Domain Age
28y 3m

Created

03.02.1998

Expires

06.10.2026

Last Updated

25.03.2026

Registrar

REG-ACTIVE24

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
Data Protection Officer mentioned

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
59/100
Mobile Friendly
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
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Roboto

WCAG Fail
64/100
Readability
/30
25/30

15px · LH 1.60

Hierarchy
/20
12/20

2.67x ratio

WCAG
/25
12/25

1:1 min contrast

Performance
/25
15/25

1 font · 2 req

Heading Font

Roboto

Sans40px

Body Font

Roboto

Sans15px

Contrast Ratio

1:1

30 issues

Reading Comfort

~48 CPL

Optimal (45–75)
40px
h1
40px
h2
15px
p
Minor Second
Scale

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

✅ Optimal line length: ~48 chars/line (ideal 45–75 CPL).

❌ Low contrast: 30 elements fail WCAG AA (min 1.0:1). Increase text/background contrast.

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Strong hierarchy: Headlines are 2.7x larger than body text.

GGoogle Fonts

Color Palette

4 unique colors
Light
#2262a2
Primary· 63.5%
#4176ac
Secondary· 23.8%
#8badca
Secondary· 7.5%

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

21 Resources

20
Scripts
1
Styles
0
Async
0
Defer

Top Script Sources

ctu.gov.cz(20)

Website Identity

ctu.cz

[email protected]
28 years old
Location detected: 🇨🇿 Czech Republicvia tld
REG-ACTIVE24cs

Social Profiles

FacebookX (Twitter)

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Last analyzed: 14 May 2026 at 20:12

Historical Analysis & Change Tracking

ctu.cz Technology Stack - Built With jQuery, jQuery UI, Slick Carousel, Lightbox, Bootstrap | StackOptic | StackOptic