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lab21.nl

https://lab21.nl· First analyzed 31 May 2026· Updated 31 May 2026
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lab21.nl
Desktop screenshot of lab21.nl
Mobile screenshot of lab21.nl
Mobile

Sponsored

Hosting Provider

Cust Denit ID

IP Address

62.148.187.66

Site Location

🇳🇱 Netherlandsvia phone

Server Location

🇳🇱 Amsterdam, The Netherlands

ASN

AS31673

Organization

Cust Denit ID

Nameservers

ns4.dn-s.nl.ns2.dn-s.nl.ns1.dn-s.nl.ns3.dn-s.nl.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
653 ms10%
Speed Index
849 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
107 KB
66 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Hosting
Cust Denit ID

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

13 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Microsoft Clarity

Libraries

2
jQueryv3.3.1
jQuery UI

CSS Frameworks

2
Bootstrapv4.0.3
Tailwind CSS

UI Components

1
Fancybox

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Advertising

1
Microsoft Advertising

Reviews

1
Trustpilot

SEO Analysis

B75/100
20
8
0
Meta Tags15/15
Content10/12
Headings5/8
Technical23/25
E-E-A-T2/7
Images3/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
L
lab21.nllab21.nl

Vloeren Kopen Nederland? PVC, Laminaat & Hout | LAB21

Vloeren kopen in Nederland? Kies uit PVC, laminaat en houten vloeren van topkwaliteit. Bezoek LAB21 online of in de showroom.

Title Length53 chars

Recommended: 50-60 chars (~318px / 580px)

Description Length125 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    19,777 URLs

    robots.txt

    23 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    27/100
    Needs Work
    7 10

    Sponsored

    AI & LLM Readiness

    D42/100
    Bot Access
    20/25
    Machine Read.
    7/25
    Schema Data
    7/25
    Citation
    8/25

    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
    Text ratio:6%
    Words:2,785
    Token eff.:Optimal

    Structured Data

    2 JSON-LD
    Organization×1.1WebSiteSearchAction
    sameAs entity links

    Citation Readiness

    Opening Summary138w
    Descriptive Headings
    Canonical URL
    Open Graph0/3
    Twitter Card0/3
    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.
    B
    73/100
    11
    Passed
    3
    Critical
    2
    Warnings
    Images & Alt Text
    15/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    18/20
    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
    4/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    4 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.
    61/100
    A+
    13 mg
    CO₂e / view
    107.3 KB
    Page Weight
    95%
    Cleaner Than
    New Visitor
    15 mg
    vs
    Returning (cached)
    8 mg
    Annual (10K/mo)
    1.6 kg
    Emission Segments
    Data Center
    3 mg
    Network
    3 mg
    Device
    7 mg
    Resource Breakdown
    JavaScript
    58.3 KB
    Images
    343 B
    CSS
    25.8 KB
    Fonts
    775 B
    HTML
    22.2 KB
    Green Hosting Not Verified
    Cust Denit ID
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    0%Critical
    Critical / Transactional

    HTTPS

    No WAF

    54d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    RSA (3072 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.2

    HTTP Protocol

    HTTP/2

    Valid From

    26.04.2026

    Valid Until

    25.07.2026

    Subject Alternative Names (3)

    cdn.lab21.nllab21.nlwww.lab21.nl

    SHA-256 Fingerprint

    5E:3A:47:2D:35:6A:BB:59:13:55:9D:01:51:0E:44:A9:BC:95:11:84...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🔴 No Cache(no-cache, no-store, must-revalidate,private)
    content-encoding
    📦 Gzip(gzip)
    content-length
    22449
    content-type
    text/html; Charset=utf-8
    date
    Sun, 31 May 2026 17:13:43 GMT
    expires
    0
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    90

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (2)

    filter1.idefender.nl
    filter2.idefender.nl

    Domain Information

    lab21.nl

    Domain Age
    16y 7m

    Created

    29.10.2009

    Last Updated

    01.12.2020

    Registrar

    team.blue nl 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.
    A
    83/100
    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, viewport-fit=cover
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Titillium Web

    WCAG AAA
    76/100
    Readability
    /30
    22/30

    15px · LH 1.60

    Hierarchy
    /20
    16/20

    2.88x ratio

    WCAG
    /25
    23/25

    9.42:1 min contrast

    Performance
    /25
    15/25

    1 font · 1 req

    Heading Font

    Titillium Web

    Sans43px

    Body Font

    Titillium Web

    Sans15px

    Contrast Ratio

    9.42:1

    WCAG AAA (≥7:1)

    Reading Comfort

    Single Font Family

    center aligned
    43px
    h1
    35px
    h2
    16px
    h4
    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 42/100. Simplify sentences for wider reach.

    ✅ WCAG AAA contrast: All text meets 7:1 ratio (min 9.4:1).

    ⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

    ✅ Strong hierarchy: Headlines are 2.9x larger than body text.

    GGoogle FontsFluid TypeFlesch 42

    Color Palette

    8 unique colors
    5.09:1 AA Light
    #ffffff
    Background· 51.29999999999999%
    #6b7063
    Other· 6.4%
    #196e34
    Primary· 0%
    #2e4233
    Secondary· 5.7%
    #d5dbdd
    Secondary· 4.5%

    Business & Marketing Stack

    6 Tools Detected

    Enterprise

    Behavior Analytics

    3
    Google Tag ManagerFree
    Google AnalyticsFree
    Microsoft ClarityFree

    User behavior and product analytics

    Advertising

    1
    Microsoft AdsEnterprise

    Ad platforms and retargeting pixels

    Privacy & Cookies

    1
    CookiebotMid-Market

    Cookie consent and privacy compliance tools

    Reviews & Social Proof

    1
    TrustpilotMid-Market

    Customer reviews and testimonials

    4

    Categories

    6

    Total Tools

    1

    Enterprise

    2

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    28 Resources

    20
    Scripts
    8
    Styles
    10
    Async
    0
    Defer

    Top Script Sources

    cdn.lab21.nl(6)googletagmanager.com(3)consent.cookiebot.com(2)bat.bing.com(2)js.zohocdn.com(2)

    Website Identity

    LAB21

    LAB21

    Organization
    +31334941936
    www.lab21.nl/
    16 years old
    Location detected: 🇳🇱 Netherlandsvia phone
    team.blue nl B.V.nl

    Sponsored

    Last analyzed: 31 May 2026 at 17:14

    Historical Analysis & Change Tracking

    lab21.nl Technology Stack - Built With jQuery, jQuery UI, Fancybox, Bootstrap, Tailwind CSS | StackOptic | StackOptic