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herzmedizin.de

https://herzmedizin.de· First analyzed 29 May 2026· Updated 29 May 2026
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herzmedizin.de
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Hosting Provider

Haendle & Korte GmbH

IP Address

88.151.70.209

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Düsseldorf, Germany

ASN

AS44700

Organization

Haendle & Korte GmbH

Server

Nginx

Nameservers

ns2.hk-net.de.ns1.hk-net.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
586 ms10%
Speed Index
762 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
4.9 MB
80 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Haendle & Korte GmbH

Technology Stack

3 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Analytics

1
Matomo

Web Servers

1
Nginxv1.18.0

SEO Analysis

B73/100
19
6
0
Meta Tags15/15
Content11/12
Headings8/8
Technical15/25
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile4/4
Indexability3/3
H
herzmedizin.deherzmedizin.de

Herzmedizin.de – Das Portal für Kardiologie & Herzgesundheit

Herzmedizin.de bietet Informationen zu Kardiologie und Herzgesundheit für Mediziner, Wissenschaftler, Patienten und Interessierte.

Title Length60 chars

Recommended: 50-60 chars (~357px / 580px)

Description Length130 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    8,675 URLs

    robots.txt

    Local SEO

    Local Search Readiness

    4/100
    Poor
    1 15 2

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

    Sponsored

    AI & LLM Readiness

    D41/100
    Bot Access
    20/25
    Machine Read.
    7/25
    Schema Data
    0/25
    Citation
    14/25

    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:5%
    Words:2,038
    Token eff.:Optimal

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary517w
    Descriptive Headingsavg 5.3w
    Canonical URL
    Open Graph3/3
    Twitter Card1/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (12)
    AI readiness recommendation preview...
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    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.
    C
    66/100
    9
    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
    13/20
    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
    9/15
    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...
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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.
    29/100
    F
    508 mg
    CO₂e / view
    4.9 MB
    Page Weight
    15%
    Cleaner Than
    New Visitor
    580 mg
    vs
    Returning (cached)
    290 mg
    Annual (10K/mo)
    60.9 kg
    Emission Segments
    Data Center
    25 mg
    Network
    149 mg
    Device
    334 mg
    Resource Breakdown
    JavaScript
    553.3 KB
    Images
    3.8 MB
    CSS
    576.8 KB
    HTML
    36.0 KB
    Green Hosting Verified
    Händle & Korte GmbH
    GWF Verified
    8 recommendations
    • •Carbon footprint recommendation preview...
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    F

    Security Score

    21%Critical
    Interactive

    HTTPS

    No WAF

    126d

    Certificate Details

    Type

    Organization Validated (OV)

    Certificate Authority

    GlobalSign nv-sa

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    17.03.2026

    Valid Until

    02.10.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (6)

    *.herzmedizin.deowa.herzmedizin.demail.herzmedizin.deautodiscover.herzmedizin.dewww.herzmedizin.deherzmedizin.de

    SHA-256 Fingerprint

    89:13:D0:72:08:CD:DC:D8:F2:E7:92:2D:80:10:34:AA:E2:11:B2:98...

    Top Recommendations

    Security recommendation preview

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    Upgrade to view header details

    HTTP Headers

    Developer Console

    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html; charset=utf-8
    date
    Fri, 29 May 2026 07:41:08 GMT
    server
    nginx/1.18.0 (Ubuntu)
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    45

    SPF
    DKIM
    DMARC

    MX Records (3)

    mx1.hk-net.de
    mx3.hk-net.de
    mx2.hk-net.de

    Domain Information

    herzmedizin.de

    Last Updated

    21.08.2019

    DNSSEC
    Not Enabled

    Privacy & Compliance

    consentmanager

    Cookie Consent Banner
    consentmanager
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: consentmanager
    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.
    C
    65/100
    Mobile Friendly
    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
    3 recommendations
    • •Mobile compatibility recommendation preview...
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    Typography & Readability

    Roboto Serif + Roboto

    WCAG Partial
    73/100
    Readability
    /30
    22/30

    18px · LH 1.44

    Hierarchy
    /20
    17/20

    4x ratio · ✓ H1→H6

    WCAG
    /25
    14/25

    1:1 min contrast

    Performance
    /25
    20/25

    System fonts

    Heading Font

    Roboto Serif

    Serif72px

    Body Font

    Roboto

    Sans18px

    Contrast Ratio

    1:1

    2 issues

    Reading Comfort

    ~34 CPL

    Narrow lines
    72px
    h1
    32px
    h2
    24px
    h3
    18px
    p

    ✅ Excellent readability: 18px body text is ideal for all devices.

    ✅ Optimal line spacing: 1.44 ratio (ideal range 1.4–1.6).

    ❌ Very complex text: Flesch score 12/100. 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.

    ✅ Strong hierarchy: Headlines are 4.0x larger than body text.

    Buy on MyFontsFlesch 12

    Color Palette

    8 unique colors
    Light
    #ffffff
    Background· 37%
    #772339
    Accent· 20.4%
    #cb1341
    Primary· 13.5%
    #aa1b3f
    Accent· 12.3%
    #911d3a
    Accent· 4.7%
    #a17684
    Secondary· 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

    9 Resources

    8
    Scripts
    1
    Styles
    5
    Async
    1
    Defer

    Top Script Sources

    cdn.consentmanager.net(3)c.delivery.consentmanager.net(2)st.dgk.org(1)local(1)dgk.meta-dcr.com(1)

    Website Identity

    herzmedizin.de

    Location detected: 🇩🇪 Germanyvia tld
    de

    Sponsored

    Last analyzed: 29 May 2026 at 07:41

    Historical Analysis & Change Tracking