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hdsr.nl

https://hdsr.nl· First analyzed 27 May 2026· Updated 27 May 2026
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hdsr.nl
Desktop screenshot of hdsr.nl
Mobile screenshot of hdsr.nl
Mobile

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Hosting Provider

iProx Hosting

IP Address

185.38.232.188

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 Amsterdam, The Netherlands

ASN

AS34427

Organization

iProx Hosting

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns11.kpn.net.ns1.kpn.net.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
739 ms10%
Speed Index
961 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
4.6 MB
38 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
iProx Hosting
CDN
Cloudflare

Technology Stack

4 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Analytics

1
Matomo

CDN

1
Cloudflare

Libraries

1
Lightbox

SEO Analysis

C64/100
19
6
0
Meta Tags9/15
Content9/12
Headings8/8
Technical18/25
E-E-A-T0/7
Images3/7
Links2/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
H
hdsr.nlhdsr.nl

Home | HDSR

Officiële site van Hoogheemraadschap De Stichtse Rijnlanden. Wij werken elke dag aan veilige dijken, droge voeten en schoon water.

Title Length11 chars

Recommended: 50-60 chars (~68px / 580px)

Description Length130 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    1,878 URLs

    robots.txt

    4 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    6/100
    Poor
    2 13 2

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

    Sponsored

    AI & LLM Readiness

    D42/100
    Bot Access
    20/25
    Machine Read.
    5/25
    Schema Data
    0/25
    Citation
    17/25

    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
    data-nosnippet

    Machine Readability

    llms.txt
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    navheader/footer
    Text ratio:4%
    Words:271
    Token eff.:Too Short
    Sections/1K:36.9
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary29w
    Descriptive Headingsavg 5.2w
    Canonical URL
    Open Graph3/3
    Twitter Card0/3
    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.
    A
    82/100
    13
    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
    17/20
    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
    6/15
    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.
    1 recommendation
    • •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.
    27/100
    F
    588 mg
    CO₂e / view
    4.6 MB
    Page Weight
    15%
    Cleaner Than
    New Visitor
    672 mg
    vs
    Returning (cached)
    336 mg
    Annual (10K/mo)
    70.6 kg
    Emission Segments
    Data Center
    131 mg
    Network
    141 mg
    Device
    316 mg
    Resource Breakdown
    JavaScript
    159.7 KB
    Images
    4.3 MB
    CSS
    212.8 KB
    HTML
    7.0 KB
    Other
    3.9 KB
    Green Hosting Not Verified
    iProx Hosting
    6 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    A+

    Security Score

    91%Excellent
    Interactive

    HTTPS

    WAF

    238d

    Certificate Details

    Type

    Extended Validation (EV)

    Certificate Authority

    DigiCert Ireland Limited

    Key Algorithm

    RSA (4096 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    14.01.2026

    Valid Until

    20.01.2027

    OCSP Stapling

    Enabled

    Subject Alternative Names (4)

    www.hdsr.nlredactie.hdsr.nlhdsr.nlwaterkwaliteitinbeeld.hdsr.nl

    SHA-256 Fingerprint

    BB:F0:7C:C9:C4:81:36:34:6F:52:5F:4B:9E:65:5E:00:B8:2D:B9:3A...

    Upgrade to view header details

    HTTP Headers

    Developer Console

    age
    90
    cache-control
    🟡 300s(public, max-age=300, s-maxage=300)
    cf-cache-status
    HIT
    cf-ray
    a025de68480f2ef5-EWR
    content-encoding
    📦 Gzip(gzip)
    content-security-policy
    frame-ancestors 'self' https://www.hdsr.nl ...
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    93

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (1)

    hdsr-nl.w-v1.mx.microsoft

    Domain Information

    hdsr.nl

    Domain Age
    26y 4m

    Created

    02.02.2000

    Last Updated

    07.05.2025

    Registrar

    KPN B.V.

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected

    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
    66/100
    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
    initial-scale=1
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    RotisSemiSansStd

    WCAG Partial
    62/100
    Readability
    /30
    20/30

    20px · LH 1.50

    Hierarchy
    /20
    17/20

    1.8x ratio · ✓ H1→H6

    WCAG
    /25
    16/25

    1:1 min contrast

    Performance
    /25
    9/25

    1 font · 7 req

    Heading Font

    RotisSemiSansStd

    Sans36px

    Body Font

    RotisSemiSansStd

    Sans20px

    Contrast Ratio

    1:1

    2 issues

    Reading Comfort

    Single Font Family

    left aligned
    36px
    h1
    24px
    h2
    20px
    p

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

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

    ❌ Very complex text: Flesch score 19/100. Consider shorter sentences and simpler words.

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

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

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

    Buy on MyFontsFlesch 19

    Color Palette

    12 unique colors
    5.24:1 AA Light
    #ffffff
    Text· 14.9%
    #6d6d61
    Other· 7.9%
    #055cab
    Primary· 17%
    #9c9a85
    Secondary· 12.2%
    #1f6eb3
    Accent· 9.3%
    #377fbd
    Accent· 7.3%
    #e8f6fd
    Primary· 6.6%
    #a6ac95
    Secondary· 6.4%

    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

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    Scripts & Styles

    17 Resources

    10
    Scripts
    7
    Styles
    2
    Async
    1
    Defer

    Top Script Sources

    local(8)hdsr.piwik.pro(1)hdsr.containers.piwik.pro(1)

    Website Identity

    hdsr.nl

    26 years old
    Location detected: 🇳🇱 Netherlandsvia tld
    KPN B.V.nl

    Sponsored

    Last analyzed: 27 May 2026 at 14:57

    Historical Analysis & Change Tracking

    hdsr.nl Technology Stack - Built With Tailwind CSS, Matomo, Cloudflare, Lightbox | StackOptic | StackOptic