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zadkine.nl

https://zadkine.nl· First analyzed 20 May 2026· Updated 20 May 2026
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zadkine.nl
Desktop screenshot of zadkine.nl
Mobile screenshot of zadkine.nl
Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

18.157.150.134

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS16509

Organization

AWS EC2 (eu-central-1)

Server

Nginx

Nameservers

ns1.zurich.surf.net.ns2.surfnet.nl.ns3.surfnet.nl.ns1.surfnet.nl.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
630 ms10%
Speed Index
819 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
347 KB
46 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Amazon Web Services (AWS)

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

11 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Hotjar

CSS Frameworks

2
Tailwind CSS
Bootstrap

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Advertising

1
Snapchat Pixel

Other

1
VWO

Web Servers

1
Nginx

Libraries

1
Swiper

SEO Analysis

B73/100
20
7
0
Meta Tags12/15
Content10/12
Headings8/8
Technical18/25
E-E-A-T0/7
Images5/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile3/4
Indexability3/3
Z
zadkine.nlzadkine.nl

Zadkine mbo Rotterdam | Zadkine

Bij mbo-school Zadkine vind je ruim 150 opleidingen in de regio Rotterdam. Op vier niveaus en keuze uit bol en bbl. Welke opleiding past bij jou?

Title Length31 chars

Recommended: 50-60 chars (~191px / 580px)

Description Length145 chars

Recommended: 120-160 chars

Issues (0)

    7 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    504 URLs

    robots.txt

    1 rules

    Sitemap reference found

    Allows all crawlers

    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

    F34/100
    Bot Access
    20/25
    Machine Read.
    5/25
    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.txtinvalid
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    Text ratio:6%
    Words:4,764
    Token eff.:Poor Structure

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary178w
    Descriptive Headings
    Canonical URL
    Open Graph2/3
    Twitter Card2/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (12)
    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
    77/100
    11
    Passed
    3
    Critical
    0
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    10/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    15/15
    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
    6/15
    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.
    77/100
    A+
    35 mg
    CO₂e / view
    346.7 KB
    Page Weight
    90%
    Cleaner Than
    New Visitor
    40 mg
    vs
    Returning (cached)
    20 mg
    Annual (10K/mo)
    4.2 kg
    Emission Segments
    Data Center
    2 mg
    Network
    10 mg
    Device
    23 mg
    Resource Breakdown
    JavaScript
    107.6 KB
    Images
    1.3 KB
    CSS
    148.2 KB
    Fonts
    1.2 KB
    HTML
    88.3 KB
    Green Hosting Verified
    Amazon Web Services (AWS)
    Provider Match
    3 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    C

    Security Score

    64%Fair
    Interactive

    HTTPS

    No WAF

    176d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Amazon

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    14.10.2025

    Valid Until

    12.11.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (10)

    www.zadkine.nlwww.studiekeuzeweek.nlvolwassenenonderwijs.zadkine.nlwerkenbij.zadkine.nlwww.weekvandestudiekeuze.nlstudiekeuzeweek.nlwww.werkenbijzadkine.nlwerkenbijzadkine.nl+2 more

    SHA-256 Fingerprint

    30:68:A5:18:56:6C:B0:04:3A:CF:42:EE:A8:7E:B0:F1:DF:DC:9D:95...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🟡 0s(max-age=0, private, must-revalidate)
    content-encoding
    📦 Gzip(gzip)
    content-security-policy-report-only
    default-src 'self' https:; script-src 'self' 'unsafe-inline'...
    content-type
    text/html; charset=utf-8
    cross-origin-opener-policy
    same-origin-allow-popups
    date
    Wed, 20 May 2026 11:29:19 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    93

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (1)

    zadkine-nl.f-v1.mx.microsoft

    Domain Information

    zadkine.nl

    Domain Age
    29y 2m

    Created

    17.03.1997

    Last Updated

    31.03.2026

    Registrar

    SURF B.V.

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookiebot

    Cookie Consent Banner
    Cookiebot
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: Cookiebot
    Privacy policy page linked
    Legitimate interest basis 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 Friendly24 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...
    Upgrade to view recommendations

    Typography & Readability

    Knockout + Source Sans Pro

    WCAG AA
    79/100
    Readability
    /30
    19/30

    15px · LH 1.60

    Hierarchy
    /20
    17/20

    6.4x ratio · ✓ H1→H6

    WCAG
    /25
    23/25

    4.87:1 min contrast

    Performance
    /25
    20/25

    2 fonts · 1 req

    Heading Font

    Knockout

    Sans96px

    Body Font

    Source Sans Pro

    Sans15px

    Contrast Ratio

    4.87:1

    WCAG AA (≥4.5:1)

    Reading Comfort

    Dual Sans-Serif

    left aligned
    96px
    h1
    60px
    h2
    22px
    h3
    15px
    p

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

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

    ⚠️ Hard to read: Flesch score 41/100. Simplify sentences for wider reach.

    ✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.9:1).

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

    ✅ Strong hierarchy: Headlines are 6.4x larger than body text.

    GGoogle FontsBuy on MyFontsFluid Type (rem)Flesch 41

    Color Palette

    9 unique colors
    2.39:1 Fail Light
    #ffffff
    Primary· 52.99999999999999%
    #aca5b3
    Secondary· 6.1%
    #c2d7f2
    Accent· 13.399999999999999%
    #b10178
    Accent· 9%
    #ebf0f8
    Secondary· 7%
    #c1cbdb
    Secondary· 4.6%
    #b52688
    Accent· 2.1%

    Business & Marketing Stack

    4 Tools Detected

    Advanced

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Privacy & Cookies

    1
    CookiebotMid-Market

    Cookie consent and privacy compliance tools

    A/B Testing & Optimization

    1
    VWO (Visual Website Optimizer)Mid-Market

    Experimentation and conversion optimization

    3

    Categories

    4

    Total Tools

    0

    Enterprise

    2

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Sponsored

    Scripts & Styles

    18 Resources

    12
    Scripts
    6
    Styles
    6
    Async
    3
    Defer

    Top Script Sources

    googletagmanager.com(4)dev.visualwebsiteoptimizer.com(3)local(3)consent.cookiebot.com(2)

    Website Identity

    zadkine.nl

    studiekeuzecentrum@zadkine.nl
    088-9453888
    29 years old
    Location detected: 🇳🇱 Netherlandsvia tld
    SURF B.V.nl

    Sponsored

    Last analyzed: 20 May 2026 at 11:29

    Historical Analysis & Change Tracking