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vkol.cz

https://vkol.cz· First analyzed 29 May 2026· Updated 29 May 2026
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vkol.cz
Desktop screenshot of vkol.cz
Mobile screenshot of vkol.cz
Mobile

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Hosting Provider

SHcz VASHOSTING

IP Address

37.235.104.63

Site Location

🇨🇿 Czech Republicvia phone

Server Location

🇨🇿 Prague, Czechia

ASN

AS39392

Organization

SHcz VASHOSTING

Server

Apache

Nameservers

nsa.ces.net.beta.vkol.cz.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
851 ms10%
Speed Index
1.1 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
483 KB
26 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
SHcz VASHOSTING

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

7 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Hotjar

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Web Servers

1
Apache

SEO Analysis

B71/100
21
5
0
Meta Tags8/15
Content11/12
Headings8/8
Technical14/25
E-E-A-T3/7
Images6/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile4/4
Indexability3/3
V
vkol.czvkol.cz

Vědecká knihovna v Olomouci

Vědecká knihovna v Olomouci je druhou nejstarší a třetí největší knihovnou svého druhu v České republice.

Title Length27 chars

Recommended: 50-60 chars (~166px / 580px)

Description Length105 chars

Recommended: 120-160 chars

Issues (0)

    5 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    2,593 URLs

    robots.txt

    Local SEO

    Local Search Readiness

    15/100
    Poor
    5 10 2

    This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

    Sponsored

    AI & LLM Readiness

    D49/100
    Bot Access
    20/25
    Machine Read.
    13/25
    Schema Data
    0/25
    Citation
    16/25

    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:8%
    Words:851
    Token eff.:Optimal
    Sections/1K:31.7
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary96w
    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 (8)
    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.
    B
    76/100
    14
    Passed
    2
    Critical
    2
    Warnings
    Images & Alt Text
    18/20
    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
    3/15
    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
    11/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    2 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.
    58/100
    A
    60 mg
    CO₂e / view
    483.2 KB
    Page Weight
    90%
    Cleaner Than
    New Visitor
    68 mg
    vs
    Returning (cached)
    34 mg
    Annual (10K/mo)
    7.2 kg
    Emission Segments
    Data Center
    13 mg
    Network
    14 mg
    Device
    32 mg
    Resource Breakdown
    JavaScript
    146.7 KB
    Images
    284.3 KB
    CSS
    42.6 KB
    Fonts
    839 B
    HTML
    8.8 KB
    Green Hosting Not Verified
    SHcz VASHOSTING
    5 recommendations
    • •Carbon footprint recommendation preview...
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    F

    Security Score

    0%Critical
    Critical / Transactional

    HTTPS

    No WAF

    87d

    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

    27.05.2026

    Valid Until

    25.08.2026

    Subject Alternative Names (3)

    kba.vkol.czvkol.czwww.vkol.cz

    SHA-256 Fingerprint

    14:CC:4B:AA:65:BF:3E:3A:AB:B1:90:C4:2E:BC:0C:46:D4:14:FC:34...

    Top Recommendations

    Security recommendation preview

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    Upgrade to view header details

    HTTP Headers

    Developer Console

    content-encoding
    📦 Gzip(gzip)
    content-length
    8701
    content-type
    text/html; charset=utf-8
    date
    Fri, 29 May 2026 18:46:34 GMT
    server
    Apache
    vary
    X-Requested-With,Accept-Encoding
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    70

    SPF
    DKIM
    DMARC

    MX Records (2)

    postman.vkol.cz
    rs.cesnet.cz

    Domain Information

    vkol.cz

    Domain Age
    24y 8m

    Created

    27.09.2001

    Expires

    01.10.2026

    Last Updated

    18.01.2025

    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.
    C
    69/100
    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, shrink-to-fit=no
    3 recommendations
    • •Mobile compatibility recommendation preview...
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    Typography & Readability

    Darker Grotesque

    WCAG Partial
    76/100
    Readability
    /30
    23/30

    17px · LH 1.50

    Hierarchy
    /20
    17/20

    2.82x ratio · ✓ H1→H6

    WCAG
    /25
    16/25

    1:1 min contrast

    Performance
    /25
    20/25

    1 font · 1 req

    Heading Font

    Darker Grotesque

    Sans48px

    Body Font

    Darker Grotesque

    Sans17px

    Contrast Ratio

    1:1

    9 issues

    Reading Comfort

    ~40 CPL

    Narrow lines
    48px
    h1
    34px
    h2
    34px
    h3
    16px
    h4
    17px
    p

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

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

    ⚠️ Hard to read: Flesch score 33/100. Simplify sentences for wider reach.

    ⚠️ Partial contrast: 9 elements below WCAG AA threshold (min 1.0:1).

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

    ✅ Strong hierarchy: Headlines are 2.8x larger than body text.

    GGoogle FontsFlesch 33

    Color Palette

    7 unique colors
    Light
    #ffffff
    Background· 28.6%
    #0a3eaa
    Accent· 44.3%
    #0c47bf
    Primary· 8.3%
    #9ba9c6
    Secondary· 4.9%
    #4c5ba1
    Secondary· 4.1%

    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

    16 Resources

    13
    Scripts
    3
    Styles
    10
    Async
    1
    Defer

    Top Script Sources

    googletagmanager.com(6)local(3)google-analytics.com(2)gstatic.com(1)google.com(1)

    Website Identity

    vkol.cz

    [email protected]
    +420585205300
    24 years old
    Location detected: 🇨🇿 Czech Republicvia phone
    REG-WEBGLOBEcs

    Sponsored

    Last analyzed: 29 May 2026 at 18:46

    Historical Analysis & Change Tracking

    vkol.cz Technology Stack - Built With Tailwind CSS, Font Awesome, Google Fonts, Google Analytics, Google Analytics 4 | StackOptic | StackOptic