4students.cz

https://4students.cz· First analyzed 21 May 2026· Updated 21 May 2026

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4students.cz

Mobile

Sponsored

Hosting Provider

Webglobe, s.r.o

IP Address

185.102.21.248

Site Location

🇨🇿 Czech Republicvia tld

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS8648

Organization

Webglobe, s.r.o

Server

Nginx

Nameservers

ns.forpsi.cz.ns.forpsi.it.ns.forpsi.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

861 ms10%

Speed Index

1.1 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1019 KB

62 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

WordPressv7.0

Infrastructure

Hosting

Webglobe, s.r.o

Technology Stack

17 Technologies Detected

Plugins

Revslider Unyson Easy Table Js_Composer Youtube Embed Plus Easy Columns

Libraries

CSS Frameworks

Analytics

Icon Libraries

Fonts

Web Servers

Customer Support

SEO Analysis

D49/100

Meta Tags7/15

Content7/12

Headings3/8

Technical17/25

E-E-A-T0/7

Images2/7

Links2/5

URL5/5

Social0/5

Freshness0/4

Mobile3/4

Indexability3/3

4students.cz4students.cz

4Students – …spojujeme zábavou

No description available for this page.

Title Length30 chars

Recommended: 50-60 chars (~188px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description — important for click-through rates in SERPs
• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (26/33) — critical for accessibility and SEO

13 issues found

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Crawlability

Sitemap

robots.txt

3 rules

Local SEO

Local Search Readiness

5/100

Poor

2 13 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

F37/100

Bot Access

20/25

Machine Read.

8/25

Schema Data

0/25

Citation

9/25

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

navheader/footer

Text ratio:2%

Words:362

Token eff.:Optimal

Sections/1K:58

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary30w

Descriptive Headingsavg 3.3w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

64/100

Passed

Critical

Warnings

Images & Alt Text

15/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

13/20

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

11/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

0/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

5 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.

53/100

103 mg

CO₂e / view

1019.2 KB

Page Weight

70%

Cleaner Than

New Visitor

118 mg

Returning (cached)

59 mg

Annual (10K/mo)

12.3 kg

Emission Segments

Data Center

5 mg

Network

30 mg

Device

68 mg

Resource Breakdown

JavaScript

27.0 KB

Images

508.1 KB

CSS

461.3 KB

Fonts

2.4 KB

HTML

20.5 KB

Green Hosting Verified

dogado

GWF Verified

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

71d

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+H3

Valid From

03.05.2026

Valid Until

01.08.2026

Subject Alternative Names (4)

4-students.cz4students.czwww.4-students.czwww.4students.cz

SHA-256 Fingerprint

C8:31:6B:77:2F:41:0A:71:BB:81:7C:A4:14:9A:5B:83:32:7B:EB:E4...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🔴 No Cache(no-cache)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Thu, 21 May 2026 09:24:17 GMT

last-modified

Thu, 21 May 2026 08:06:50 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mxavas.forpsi.com

Domain Information

4students.cz

Domain Age

18y 4m

Created

14.01.2008

Expires

13.01.2027

Last Updated

05.03.2015

Registrar

REG-INTERNET-CZ

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

72/100

Mobile Friendly37 breakpoints

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...

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Typography & Readability

Poppins

WCAG Partial

48/100

Readability

/30

15/30

14px · LH 1.79

Hierarchy

/20

4/20

WCAG

/25

14/25

1:1 min contrast

Performance

/25

15/25

1 font · 3 req

Heading Font

Poppins

Sans

Body Font

Poppins

Sans14px

Contrast Ratio

1:1

38 issues

Reading Comfort

~42 CPL

Narrow lines

60px

24px

14px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

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

⚠️ Partial contrast: 38 elements below WCAG AA threshold (min 1.0:1).

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

⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

✅ Lean font stack: 1 font families keeps load times fast.

GGoogle Fonts Buy on MyFontsFlesch 46

Color Palette

8 unique colors

Light

#ffffff

Background· 18.900000000000002%

#ebcf9f

Primary· 25.8%

#fbe5bd

Accent· 22.900000000000002%

#dabd85

Accent· 12.200000000000001%

#c2b67f

Secondary· 5.5%

#afaa73

Secondary· 5.4%

#9d7f4a

Secondary· 4.9%

#fbf5dc

Accent· 4.2%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

4students.cz(13)google-analytics.com(1)js.web4ukraine.org(1)

Website Identity

4students.cz

hrda@4students.cz

18 years old

Location detected: 🇨🇿 Czech Republicvia tld

REG-INTERNET-CZcs

Social Profiles

Facebook Instagram LinkedIn YouTube

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Last analyzed: 21 May 2026 at 09:24

Historical Analysis & Change Tracking