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helmholtz-hzi.de

https://helmholtz-hzi.de· First analyzed 06 May 2026· Updated 06 May 2026
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helmholtz-hzi.de
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Mobile

Sponsored

Hosting Provider

Myloc De Sergeykarpenko

IP Address

46.20.39.93

Site Location

🇩🇪 Germanyvia phone

Server Location

🇩🇪 Düsseldorf, Germany

ASN

AS24961

Organization

Myloc De Sergeykarpenko

Nameservers

dns-2.dfn.de.dns-1.dfn.de.dns01.helmholtz-hzi.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
511 ms10%
Speed Index
664 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.1 MB
97 requests

Image Optimization

WebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
TYPO3

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

5 Technologies Detected

Other

1
Leaflet

Other

1
AOS (Animate On Scroll)

CSS Frameworks

1
Tailwind CSS

Analytics

1
Matomo

Libraries

1
Swiper

SEO Analysis

A88/100
26
3
0
Meta Tags15/15
Content12/12
Headings8/8
Technical24/25
E-E-A-T3/7
Images5/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile4/4
Indexability3/3
H
helmholtz-hzi.dehelmholtz-hzi.de

HZI | Helmholtz-Zentrum für Infektionsforschung (HZI)

Am Helmholtz-Zentrum für Infektionsforschung untersuchen Wissenschaftler:innen die Mechanismen von Infektionskrankheiten und ihrer Abwehr.

Title Length53 chars

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

Description Length138 chars

Recommended: 120-160 chars

Issues (0)

    3 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    6 URLs

    6 sub-sitemaps

    robots.txt

    15 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    31/100
    Needs Work
    9 9 1

    Sponsored

    AI & LLM Readiness

    D54/100
    Bot Access
    20/25
    Machine Read.
    11/25
    Schema Data
    6/25
    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

    Machine Readability

    llms.txt
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    nav
    Text ratio:3%
    Words:746
    Token eff.:Optimal
    Sections/1K:2.7
    Depth:1/5

    Structured Data

    2 JSON-LD
    Article×1.2microdataWebSiteBreadcrumbList

    Citation Readiness

    Opening Summary88w
    Descriptive Headingsavg 4.2w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    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+
    92/100
    15
    Passed
    1
    Critical
    0
    Warnings
    Images & Alt Text
    20/20
    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
    9/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

    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.
    43/100
    B
    138 mg
    CO₂e / view
    1.1 MB
    Page Weight
    70%
    Cleaner Than
    New Visitor
    158 mg
    vs
    Returning (cached)
    79 mg
    Annual (10K/mo)
    16.6 kg
    Emission Segments
    Data Center
    31 mg
    Network
    33 mg
    Device
    74 mg
    Resource Breakdown
    JavaScript
    84.3 KB
    Images
    857.4 KB
    CSS
    144.1 KB
    HTML
    31.8 KB
    Green Hosting Not Verified
    Myloc De Sergeykarpenko
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    A

    Security Score

    86%Very Good
    Interactive

    HTTPS

    No WAF

    10d

    Certificate Details

    Type

    Organization Validated (OV)

    Certificate Authority

    Hellenic Academic and Research Institutions CA

    Key Algorithm

    RSA (4096 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    16.05.2025

    Valid Until

    16.05.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (20)

    helmholtz-hzi.dewww.helmholtz-hzi.decruzivax.euwww.cruzivax.eucoresma.euwww.coresma.euincentive-h2020.euwww.incentive-h2020.eu+12 more

    SHA-256 Fingerprint

    B0:8C:DB:37:8B:C7:D9:15:03:81:D5:5A:A3:1C:27:2F:4E:24:58:EC...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🔴 No Cache(private, no-store)
    content-encoding
    zstd
    content-language
    de-DE
    content-security-policy
    frame-ancestors 'self' https://www.helmholtz-hzi.de https://...
    content-type
    text/html; charset=utf-8
    date
    Wed, 06 May 2026 04:30:36 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    70

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (1)

    fm.helmholtz-hzi.de

    Domain Information

    helmholtz-hzi.de

    Last Updated

    18.04.2017

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    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.
    C
    63/100
    Mobile Friendly1 breakpoint
    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
    3 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    SourceSansPro

    WCAG Partial
    79/100
    Readability
    /30
    22/30

    19px · LH 1.43

    Hierarchy
    /20
    20/20

    3.95x ratio · ✓ H1→H6

    WCAG
    /25
    17/25

    1:1 min contrast

    Performance
    /25
    20/25

    1 font · 3 req

    Heading Font

    SourceSansPro

    Sans75px

    Body Font

    SourceSansPro

    Sans19px

    Contrast Ratio

    1:1

    4 issues

    Reading Comfort

    ~37 CPL

    Narrow lines
    75px
    h1
    40px
    h2
    75px
    h3
    19px
    p
    Minor Third
    Scale

    ✅ Excellent readability: 19px body text is ideal for all devices.

    ✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

    ❌ Very complex text: Flesch score 15/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 4 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 MyFontsFluid Type (rem)Flesch 15

    Color Palette

    8 unique colors
    Light
    #002865
    Primary· 34.8%
    #090811
    Primary· 33.699999999999996%
    #005aa0
    Primary· 0%
    #185d2e
    Accent· 8.2%
    #063430
    Accent· 7.8%
    #90bb9f
    Secondary· 6.6%
    #011e50
    Primary· 6.3%
    #3c3a47
    Secondary· 1.7%

    Business & Marketing Stack

    2 Tools Detected

    Growing

    Behavior Analytics

    2
    Matomo (Piwik)Mid-Market
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    2

    Total Tools

    0

    Enterprise

    1

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    11 Resources

    6
    Scripts
    5
    Styles
    2
    Async
    0
    Defer

    Top Script Sources

    local(5)matomo.helmholtz-hips.de(1)

    Website Identity

    Helmholtz-Zentrum für Infektionsforschung (HZI)

    +4953161810
    www.helmholtz-hzi.de
    Location detected: 🇩🇪 Germanyvia phone
    de-DE

    Sponsored

    Last analyzed: 06 May 2026 at 04:30

    Historical Analysis & Change Tracking