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szu.cz

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

Sponsored

Hosting Provider

ACTIVE24

IP Address

31.15.10.179

Site Location

🇨🇿 Czech Republicvia tld

Server Location

🇨🇿 Prague, Czechia

ASN

AS25234

Organization

ACTIVE24

Server

Nginx

Nameservers

nsa.ces.net.ns.szu.cz.

Performance

97

Core Web Vitals

Weight

First Contentful Paint
986 ms10%
Speed Index
1.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
4.5 MB
108 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv6.9.4
cms
szuCustom

Technology Stack

25 Technologies Detected

Plugins

14
VimeoDrop Shadow BoxesCc Child Pages
Contact Form 7
Cookies And Content Security PolicyEmail SubscribersQuiz MakerWp Event ManagerSearch Filter ProMimetypes Link IconsWp Event Manager Registrations
Acf Onyx Poll
Page Links To
Yoast SEO

Libraries

2
jQueryv3.7.1
jQuery UI

UI Components

2
Slick CarouselFancybox

CSS Frameworks

2
Tailwind CSS
Normalize.css

Analytics

2
Google Analytics
Google Analytics 4

Frameworks

1
Alpine.js

Fonts

1
Google Fonts

Web Servers

1
Nginx

SEO Analysis

A86/100
25
5
0
Meta Tags15/15
Content11/12
Headings8/8
Technical25/25
E-E-A-T0/7
Images3/7
Links4/5
URL5/5
Social4/5
Freshness4/4
Mobile4/4
Indexability3/3
S
szu.czszu.cz

Státní zdravotní ústav - Staráme se o zdravé Česko

Staráme se o zdravé Česko. Státní zdravotní ústav je příspěvkovou organizací ministerstva zdravotnictví. Statutárním orgánem ústavu je ředitel

Title Length50 chars

Recommended: 50-60 chars (~312px / 580px)

Description Length142 chars

Recommended: 120-160 chars

Issues (0)

    5 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    10 URLs

    10 sub-sitemaps

    robots.txt

    3 rules

    Sitemap reference found

    Allows all crawlers

    Local SEO

    Local Search Readiness

    28/100
    Needs Work
    8 9 1

    Sponsored

    AI & LLM Readiness

    D49/100
    Bot Access
    20/25
    Machine Read.
    11/25
    Schema Data
    4/25
    Citation
    14/25

    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
    header/footer
    Text ratio:6%
    Words:809
    Token eff.:Optimal
    Sections/1K:24.7
    Depth:1/5

    Structured Data

    3 JSON-LD
    WebSiteBreadcrumbListSearchAction

    Citation Readiness

    Opening Summary18w
    Descriptive Headingsavg 3.8w
    Canonical URL
    Open Graph3/3
    Twitter Card1/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (10)
    AI readiness recommendation preview...
    Upgrade to view recommendations

    Sponsored

    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
    82/100
    13
    Passed
    2
    Critical
    1
    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
    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
    9/15
    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.
    23/100
    F
    571 mg
    CO₂e / view
    4.5 MB
    Page Weight
    15%
    Cleaner Than
    New Visitor
    652 mg
    vs
    Returning (cached)
    326 mg
    Annual (10K/mo)
    68.5 kg
    Emission Segments
    Data Center
    128 mg
    Network
    137 mg
    Device
    306 mg
    Resource Breakdown
    JavaScript
    204.8 KB
    Images
    3.7 MB
    CSS
    580.7 KB
    Fonts
    1009 B
    HTML
    21.6 KB
    Other
    543 B
    Green Hosting Not Verified
    ACTIVE24
    7 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    D

    Security Score

    41%Poor
    Interactive

    HTTPS

    No WAF

    66d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-384

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    08.04.2026

    Valid Until

    07.07.2026

    Subject Alternative Names (3)

    proucitele.szu.gov.czszu.gov.czwww.szu.gov.cz

    SHA-256 Fingerprint

    23:4F:9C:E8:03:07:B7:0D:97:F2:96:92:7C:7A:39:0E:11:E7:39:B2...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    content-encoding
    📦 Gzip(gzip)
    content-length
    21783
    content-security-policy
    script-src 'self' 'unsafe-inline' 'unsafe-eval' https://play...
    content-type
    text/html; charset=UTF-8
    date
    Sat, 02 May 2026 04:31:00 GMT
    link
    <https://szu.gov.cz/wp-json/>; rel="https://api.w.org/", <ht...
    Good Warning Issue

    Email Infrastructure

    Microsoft 365

    Score

    93

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (1)

    szu-cz.mail.protection.outlook.com

    Domain Information

    szu.cz

    Domain Age
    29y 6m

    Created

    29.10.1996

    Expires

    28.10.2026

    Last Updated

    30.11.2015

    Registrar

    REG-WEBGLOBE

    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.
    B
    76/100
    Mobile Friendly3 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

    Typography & Readability

    Mulish

    WCAG Partial
    76/100
    Readability
    /30
    21/30

    15px · LH 1.50

    Hierarchy
    /20
    19/20

    4.27x ratio · ✓ H1→H6

    WCAG
    /25
    16/25

    4.46:1 min contrast

    Performance
    /25
    20/25

    1 font · 2 req

    Heading Font

    Mulish

    Sans66px

    Body Font

    Mulish

    Sans15px

    Contrast Ratio

    4.46:1

    1 issue

    Reading Comfort

    ~54 CPL

    Optimal (45–75)
    66px
    h1
    31px
    h2
    21px
    h3
    15px
    h4
    15px
    p

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

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

    ✅ Optimal line length: ~54 chars/line (ideal 45–75 CPL).

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

    ⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 4.5:1).

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

    GGoogle FontsFlesch 27

    Color Palette

    5 unique colors
    15.13:1 AAA Dark
    #262626
    Text· 27.000000000000004%
    #ffffff
    Background· 16.2%
    #000d15
    Primary· 38.300000000000004%
    #1e1413
    Secondary· 10%
    #558b9e
    Secondary· 8.4%

    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

    Sponsored

    Scripts & Styles

    30 Resources

    20
    Scripts
    10
    Styles
    2
    Async
    0
    Defer

    Top Script Sources

    szu.gov.cz(15)ssl.google-analytics.com(1)player.vimeo.com(1)googletagmanager.com(1)cdnjs.cloudflare.com(1)

    Website Identity

    Státní zdravotní ústav - Staráme se o zdravé Česko

    Staráme se o zdravé Česko. Státní zdravotní ústav je příspěvkovou organizací ministerstva zdravotnictví. Statutárním orgánem ústavu je ředitel

    zdravust@szu.gov.cz
    267 082 295
    szu.gov.cz/
    29 years old
    Location detected: 🇨🇿 Czech Republicvia tld
    REG-WEBGLOBE📧 Microsoft 365cs-cz

    Sponsored

    Last analyzed: 02 May 2026 at 04:31

    Historical Analysis & Change Tracking