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nbdbiblion.nl

https://nbdbiblion.nl· First analyzed 02 Jun 2026· Updated 02 Jun 2026
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nbdbiblion.nl
Desktop screenshot of nbdbiblion.nl
Mobile screenshot of nbdbiblion.nl
Mobile

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Hosting Provider

True B.V

IP Address

87.233.198.7

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 Amsterdam, The Netherlands

ASN

AS15703

Organization

True B.V

Nameservers

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

Performance

98

Core Web Vitals

Weight

First Contentful Paint
903 ms10%
Speed Index
1.2 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.4 MB
46 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
True B.V

Technology Stack

7 Technologies Detected

Analytics

2
Google Analytics
Matomo

Libraries

1
jQuery

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Advertising

1
Google Ads

Customer Support

1
Zendesk

SEO Analysis

A80/100
24
5
0
Meta Tags13/15
Content12/12
Headings8/8
Technical23/25
E-E-A-T0/7
Images6/7
Links5/5
URL5/5
Social2/5
Freshness0/4
Mobile3/4
Indexability3/3
N
nbdbiblion.nlnbdbiblion.nl

Stichting NBD Biblion | De Partner Voor Bibliotheken En Onderwijs

NBD Biblion is de partner voor bibliotheken en onderwijs. We zetten ons dagelijks in om de bibliotheken en onderwijs zoveel mogelijk te ondersteunen en te on...

Description truncated.
Title Length65 chars

Recommended: 50-60 chars (~386px / 580px)

Description Length165 chars

Recommended: 120-160 chars

Issues (0)

    5 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    603 URLs

    robots.txt

    38 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    8/100
    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

    D43/100
    Bot Access
    19/25
    Machine Read.
    7/25
    Schema Data
    1/25
    Citation
    16/25

    AI Bot Access

    13/14 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
    Text ratio:8%
    Words:2,429
    Token eff.:Optimal
    Sections/1K:2.1

    Structured Data

    Microdata
    BreadcrumbListmicrodata

    Citation Readiness

    Opening Summary47w
    Descriptive Headingsavg 4.9w
    Canonical URL
    Open Graph3/3
    Twitter Card0/3
    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.
    A
    85/100
    15
    Passed
    2
    Critical
    3
    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
    11/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    7/15
    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.
    47/100
    C
    183 mg
    CO₂e / view
    1.4 MB
    Page Weight
    60%
    Cleaner Than
    New Visitor
    209 mg
    vs
    Returning (cached)
    105 mg
    Annual (10K/mo)
    22.0 kg
    Emission Segments
    Data Center
    41 mg
    Network
    44 mg
    Device
    98 mg
    Resource Breakdown
    JavaScript
    140.6 KB
    Images
    1.3 MB
    CSS
    33.3 KB
    HTML
    11.6 KB
    Other
    765 B
    Green Hosting Not Verified
    True B.V
    5 recommendations
    • •Carbon footprint recommendation preview...
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    C

    Security Score

    64%Fair
    Interactive

    HTTPS

    No WAF

    49d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    RSA (4096 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    22.04.2026

    Valid Until

    21.07.2026

    Subject Alternative Names (2)

    nbdbiblion.nlwww.nbdbiblion.nl

    SHA-256 Fingerprint

    BA:59:2F:9D:50:F3:B9:5E:42:84:7A:A3:3A:BB:44:A8:7E:8B:15:E0...

    Top Recommendations

    Security recommendation preview

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    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🟡 60s(max-age=60, public)
    content-encoding
    📦 Gzip(gzip)
    content-language
    nl
    content-type
    text/html; charset=UTF-8
    cross-origin-opener-policy
    same-origin
    date
    Tue, 02 Jun 2026 01:04:22 GMT
    Good Warning Issue

    Email Infrastructure

    Microsoft 365

    Score

    98

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (2)

    relay.surfnet.nl
    nbdbiblion-nl.mail.protection.outlook.com

    Domain Information

    nbdbiblion.nl

    Domain Age
    25y 3m

    Created

    09.03.2001

    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
    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
    77/100
    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=1.0
    2 recommendations
    • •Mobile compatibility recommendation preview...
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    Typography & Readability

    Montserrat

    WCAG Partial
    74/100
    Readability
    /30
    22/30

    16px · LH 2.00

    Hierarchy
    /20
    20/20

    4x ratio · ✓ H1→H6

    WCAG
    /25
    17/25

    1:1 min contrast

    Performance
    /25
    15/25

    1 font · 2 req

    Heading Font

    Montserrat

    Sans64px

    Body Font

    Montserrat

    Sans16px

    Contrast Ratio

    1:1

    9 issues

    Reading Comfort

    ~39 CPL

    Narrow lines
    64px
    h1
    44px
    h2
    36px
    h3
    24px
    h4
    16px
    p

    ✅ Excellent readability: 16px body text is ideal for all devices.

    ⚠️ Wide line spacing (2.00). 1.4–1.6 is optimal for body text.

    ⚠️ Hard to read: Flesch score 40/100. 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 4.0x larger than body text.

    Buy on MyFontsFlesch 40

    Color Palette

    6 unique colors
    14.82:1 AAA Light
    #f6f6f6
    Background· 38.900000000000006%
    #232121
    Text· 7.3%
    #18120f
    Primary· 14.5%

    Business & Marketing Stack

    2 Tools Detected

    Growing

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    2

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    14 Resources

    12
    Scripts
    2
    Styles
    7
    Async
    1
    Defer

    Top Script Sources

    local(5)bibendo.containers.piwik.pro(2)googletagmanager.com(2)policy.app.cookieinformation.com(2)cxppeur1rdrect01sa02cdn.blob.core.windows.net(1)

    Website Identity

    nbdbiblion.nl

    25 years old
    Location detected: 🇳🇱 Netherlandsvia tld
    SURF B.V.📧 Microsoft 365nl

    Sponsored

    Last analyzed: 02 Jun 2026 at 01:04

    Historical Analysis & Change Tracking

    nbdbiblion.nl Technology Stack - Built With jQuery, Tailwind CSS, Google Analytics, Google Tag Manager, Matomo | StackOptic | StackOptic