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bitcoinkoers.org

https://bitcoinkoers.org· First analyzed 29 May 2026· Updated 29 May 2026
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bitcoinkoers.org
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Mobile

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Hosting Provider

Antagonist B.V

IP Address

141.138.168.154

Site Location

🇳🇱 Netherlandsvia ip

Server Location

🇳🇱 Enschede, The Netherlands

ASN

AS20847

Organization

Antagonist B.V

Server

Apache

Nameservers

webhostingserver.g1-dns.one.webhostingserver.g1-dns.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
542 ms10%
Speed Index
705 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.1 MB
54 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Joomla!

Technology Stack

8 Technologies Detected

CSS Frameworks

2
Tailwind CSS
UIkit

Analytics

2
Google Analytics
Google Analytics 4

Libraries

1
jQuery

Other

1
Chart.js

UI Components

1
Fancybox

Web Servers

1
Apache

SEO Analysis

B79/100
24
7
0
Meta Tags15/15
Content12/12
Headings8/8
Technical19/25
E-E-A-T3/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness4/4
Mobile1/4
Indexability3/3
B
bitcoinkoers.orgbitcoinkoers.org

Bitcoin Koers - bekijk de actuele waarde van Bitcoin

De actuele Bitcoin koers in Euro en USD ✅ Realtime interactieve Bitcoin koers grafiek en historisch BTC koersverloop ✅ BTC koers analyse en Bitcoin koers nieuws

Title Length52 chars

Recommended: 50-60 chars (~312px / 580px)

Description Length160 chars

Recommended: 120-160 chars

Issues (0)

    7 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    4,098 URLs

    robots.txt

    28 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    3/100
    Poor
    1 14 2

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

    Sponsored

    AI & LLM Readiness

    D52/100
    Bot Access
    18/25
    Machine Read.
    14/25
    Schema Data
    2/25
    Citation
    18/25

    AI Bot Access

    11/14 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:18%
    Words:2,829
    Token eff.:Optimal
    Sections/1K:8.8
    Depth:2/5

    Structured Data

    RDFa
    Article×1.2(min)rdfaPerson×1.3(min)rdfa

    Citation Readiness

    Opening Summary40w
    Descriptive Headingsavg 5.7w
    Canonical URL
    Open Graph0/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (7)
    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
    89/100
    14
    Passed
    1
    Critical
    0
    Warnings
    Images & Alt Text
    15/20
    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
    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
    13/15
    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.
    1 recommendation
    • •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.
    71/100
    B
    117 mg
    CO₂e / view
    1.1 MB
    Page Weight
    70%
    Cleaner Than
    New Visitor
    134 mg
    vs
    Returning (cached)
    67 mg
    Annual (10K/mo)
    14.1 kg
    Emission Segments
    Data Center
    6 mg
    Network
    34 mg
    Device
    77 mg
    Resource Breakdown
    JavaScript
    151.1 KB
    Images
    877.3 KB
    CSS
    110.3 KB
    HTML
    21.2 KB
    Green Hosting Verified
    Previder BV
    GWF Verified
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    D

    Security Score

    59%Poor
    Interactive

    HTTPS

    No WAF

    54d

    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

    23.04.2026

    Valid Until

    22.07.2026

    Subject Alternative Names (2)

    bitcoinkoers.orgwww.bitcoinkoers.org

    SHA-256 Fingerprint

    7B:BD:FA:57:EF:65:B4:95:41:23:7C:F2:61:57:34:0F:0C:F6:12:46...

    Top Recommendations

    Security recommendation preview

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    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🔴 No Cache(no-store, no-cache, must-revalidate, post-check=0, pre-check...)
    content-encoding
    📦 Gzip(gzip)
    content-security-policy
    content-security-policy-report-only
    content-type
    text/html; charset=utf-8
    cross-origin-opener-policy
    same-origin
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    68

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (1)

    mail.bitcoinkoers.org

    Domain Information

    bitcoinkoers.org

    Domain Age
    8y 9m

    Created

    16.08.2017

    Expires

    16.08.2027

    Last Updated

    15.07.2025

    Registrar

    Hosting Concepts B.V. d/b/a Registrar.eu

    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

    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
    71/100
    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
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Helvetica Neue

    WCAG Partial
    80/100
    Readability
    /30
    27/30

    16px · LH 1.50

    Hierarchy
    /20
    19/20

    2.25x ratio · ✓ H1→H6

    WCAG
    /25
    13/25

    1:1 min contrast

    Performance
    /25
    21/25

    System fonts

    Heading Font

    Helvetica Neue

    Sans36px

    Body Font

    Helvetica Neue

    Sans16px

    Contrast Ratio

    1:1

    8 issues

    Reading Comfort

    ~39 CPL

    Narrow lines
    36px
    h1
    28px
    h2
    24px
    h3
    20px
    h4
    16px
    p

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

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

    ⚠️ Partial contrast: 8 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 2.2x larger than body text.

    ❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

    Flesch 52

    Color Palette

    4 unique colors
    Light
    #ffffff
    Background· 50.09999999999998%
    #e3eaf2
    Primary· 33.800000000000004%
    #3a92c1
    Accent· 11.9%
    #132f42
    Accent· 4.5%

    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

    20 Resources

    14
    Scripts
    6
    Styles
    2
    Async
    4
    Defer

    Top Script Sources

    local(12)googletagmanager.com(1)widgets.cryptocompare.com(1)

    Website Identity

    bitcoinkoers.org

    8 years old
    Location detected: 🇳🇱 Netherlandsvia ip
    Hosting Concepts B.V. d/b/a Registrar.eunl

    Sponsored

    Last analyzed: 29 May 2026 at 18:26

    Historical Analysis & Change Tracking

    bitcoinkoers.org Technology Stack - Built With jQuery, Chart.js, Fancybox, Tailwind CSS, UIkit | StackOptic | StackOptic