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it4i.cz

https://it4i.cz· First analyzed 19 May 2026· Updated 19 May 2026
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it4i.cz
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Mobile

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Hosting Provider

NETHOST s.r.o

IP Address

93.185.108.156

Site Location

🇨🇿 Czech Republicvia phone

Server Location

🇨🇿 Brno, Czechia

ASN

AS43541

Organization

NETHOST s.r.o

Server

Apache

Nameservers

nsa.ces.net.decsys.vsb.cz.

Performance

77

Core Web Vitals

Weight

First Contentful Paint
2.7 s10%
Speed Index
3.5 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
28.5 MB
53 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
NETHOST s.r.o

Technology Stack

7 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Libraries

1
jQueryv3.2.1

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Web Servers

1
Apache

SEO Analysis

B70/100
19
8
1
Meta Tags9/15
Content11/12
Headings7/8
Technical18/25
E-E-A-T5/7
Images1/7
Links5/5
URL5/5
Social0/5
Freshness2/4
Mobile4/4
Indexability3/3
I
it4i.czit4i.cz

IT4Innovations

O IT4Innovations Jsme předním výzkumným, vývojovým a inovačním centrem v oblasti vysoce výkonného počítání (HPC), datových analýz (HPDA), umělé

Title Length14 chars

Recommended: 50-60 chars (~80px / 580px)

Description Length148 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (1/1) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

1,485 URLs

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

18/100
Poor
5 11 1

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

D44/100
Bot Access
20/25
Machine Read.
13/25
Schema Data
1/25
Citation
10/25

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
nav
Text ratio:5%
Words:958
Token eff.:Optimal
Sections/1K:16.7
Depth:1/5

Structured Data

1 JSON-LD
Organization×1.1(min)

Citation Readiness

Opening Summary506w
Descriptive Headingsavg 6.4w
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.
B
74/100
10
Passed
3
Critical
1
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
14/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
10/15
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
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
6/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 recommendations
  • •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.
16/100
F
3.60 g
CO₂e / view
28.5 MB
Page Weight
5%
Cleaner Than
New Visitor
4.12 g
vs
Returning (cached)
2.06 g
Annual (10K/mo)
432.3 kg
Emission Segments
Data Center
805 mg
Network
865 mg
Device
1.93 g
Resource Breakdown
JavaScript
137.2 KB
Images
23.4 MB
CSS
287.9 KB
Fonts
2.3 KB
HTML
14.3 KB
Other
4.7 MB
Green Hosting Not Verified
NETHOST s.r.o
7 recommendations
  • •Carbon footprint recommendation preview...
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C

Security Score

61%Fair
Interactive

HTTPS

No WAF

74d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

04.05.2026

Valid Until

02.08.2026

Subject Alternative Names (5)

admin.it4i.czeurocc.it4i.czit4i.czwww.it4i.czwww.karolina.it4i.cz

SHA-256 Fingerprint

9A:70:28:37:68:22:3A:94:4C:C3:42:C1:F3:04:2C:B8:A5:A9:9E:19...

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
⚡ Brotli(br)
content-length
14389
content-security-policy-report-only
upgrade-insecure-requests; default-src 'none'; object-src 's...
content-type
text/html
date
Tue, 19 May 2026 20:37:06 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

70

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mx30.vsb.cz
smtp.vsb.cz

Domain Information

it4i.cz

Domain Age
18 years

Created

30.04.2008

Expires

29.04.2027

Last Updated

10.04.2009

Registrar

REG-MIRAMO

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

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.
C
64/100
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, user-scalable=yes
2 recommendations
  • •Mobile compatibility recommendation preview...
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Typography & Readability

Roboto

WCAG Partial
72/100
Readability
/30
26/30

20px · LH 1.50

Hierarchy
/20
14/20

1.75x ratio

WCAG
/25
12/25

1:1 min contrast

Performance
/25
20/25

1 font · 3 req

Heading Font

Roboto

Sans35px

Body Font

Roboto

Sans20px

Contrast Ratio

1:1

2 issues

Reading Comfort

~46 CPL

Optimal (45–75)
35px
h1
35px
h2
22px
h3
20px
p

✅ Excellent readability: 20px body text is ideal for all devices.

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

✅ Optimal line length: ~46 chars/line (ideal 45–75 CPL).

❌ Very complex text: Flesch score 18/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

GGoogle FontsFlesch 18

Color Palette

12 unique colors
Light
#ffffff
Text· 14.5%
#06202b
Primary· 13.2%
#203e46
Secondary· 9.9%
#0e303a
Accent· 7.9%
#226270
Accent· 7.6%
#255159
Secondary· 7.6%
#457377
Secondary· 6.6%
#579599
Secondary· 6.6%

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

13 Resources

11
Scripts
2
Styles
1
Async
0
Defer

Top Script Sources

local(5)it4i.cz(4)kookiecheck.cz(1)googletagmanager.com(1)

Website Identity

it4i.cz

[email protected]
+420 597 329 500
18 years old
Location detected: 🇨🇿 Czech Republicvia phone
REG-MIRAMO

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Last analyzed: 19 May 2026 at 20:37

Historical Analysis & Change Tracking

it4i.cz Technology Stack - Built With jQuery, Tailwind CSS, Font Awesome, Google Fonts, Google Analytics | StackOptic | StackOptic