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hereon.de

https://hereon.de· First analyzed 11 May 2026· Updated 11 May 2026
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hereon.de
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Mobile screenshot of hereon.de
Mobile

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Hosting Provider

Helmholtz-Zentrum Geesthacht Zentrum fuer Material- und Kuestenforschung GmbH

IP Address

141.4.217.38

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Hamburg, Germany

ASN

AS680

Organization

Helmholtz-Zentrum Geesthacht Zentrum fuer Material- und Kuestenforschung GmbH

Server

Apache

Nameservers

dns2.hereon.de.dns1.hereon.de.deneb.dfn.de.

Performance

94

Core Web Vitals

Weight

First Contentful Paint
1.2 s10%
Speed Index
1.5 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
6.1 MB
43 requests

Image Optimization

Responsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Helmholtz-Zentrum Geesthacht Zentrum fuer Material- und Kuestenforschung GmbH

Technology Stack

4 Technologies Detected

CSS Frameworks

2
Tailwind CSS
Foundation

Icon Libraries

1
Font Awesome

Web Servers

1
Apache

SEO Analysis

B71/100
20
8
0
Meta Tags11/15
Content10/12
Headings8/8
Technical16/25
E-E-A-T0/7
Images5/7
Links5/5
URL5/5
Social2/5
Freshness2/4
Mobile4/4
Indexability3/3
H
hereon.dehereon.de

Helmholtz-Zentrum Hereon - Spitzenforschung für eine Welt im Wandel

Helmholtz-Zentrum Hereon, Großforschungszentrum der Helmholtz-Gemeinschaft mit Hauptsitz in Geesthacht

Title Length67 chars

Recommended: 50-60 chars (~414px / 580px)

Description Length102 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    6,229 URLs

    robots.txt

    14 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    6/100
    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

    F35/100
    Bot Access
    20/25
    Machine Read.
    8/25
    Schema Data
    0/25
    Citation
    7/25

    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:6%
    Words:2,130
    Token eff.:Optimal
    Depth:1/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary
    Descriptive Headings
    Canonical URL
    Open Graph2/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (11)
    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.
    B
    75/100
    10
    Passed
    3
    Critical
    0
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    10/20
    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
    9/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    6/15
    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.
    22/100
    F
    772 mg
    CO₂e / view
    6.1 MB
    Page Weight
    5%
    Cleaner Than
    New Visitor
    883 mg
    vs
    Returning (cached)
    441 mg
    Annual (10K/mo)
    92.7 kg
    Emission Segments
    Data Center
    173 mg
    Network
    185 mg
    Device
    414 mg
    Resource Breakdown
    JavaScript
    99.7 KB
    Images
    5.6 MB
    CSS
    376.3 KB
    HTML
    25.7 KB
    Green Hosting Not Verified
    Helmholtz-Zentrum Geesthacht Zentrum fuer Material- und Kuestenforschung GmbH
    7 recommendations
    • •Carbon footprint recommendation preview...
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    B

    Security Score

    76%Good
    Interactive

    HTTPS

    No WAF

    193d

    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/1.1

    Valid From

    06.05.2026

    Valid Until

    21.11.2026

    Subject Alternative Names (14)

    hereon.dewww.hereon.orghereon.nethereon.orgwww.hereon.dehereone.dewww.hzg.euwww.hzg.de+6 more

    SHA-256 Fingerprint

    DA:70:B9:E8:EE:09:EB:A4:51:7C:A3:74:C0:2B:C7:6D:ED:BE:B8:35...

    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)
    connection
    Keep-Alive
    content-encoding
    📦 Gzip(gzip)
    content-length
    25966
    content-security-policy
    frame-ancestors 'self'
    content-type
    text/html; charset=UTF-8
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    90

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (2)

    iron1.hereon.de
    iron2.hereon.de

    Domain Information

    hereon.de

    Last Updated

    18.06.2021

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    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
    68/100
    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=1.0
    2 recommendations
    • •Mobile compatibility recommendation preview...
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    Typography & Readability

    Poppins

    WCAG Partial
    67/100
    Readability
    /30
    20/30

    18px · LH 1.60

    Hierarchy
    /20
    19/20

    3x ratio · ✓ H1→H6

    WCAG
    /25
    15/25

    3.34:1 min contrast

    Performance
    /25
    13/25

    1 font · 4 req

    Heading Font

    Poppins

    Sans54px

    Body Font

    Poppins

    Sans18px

    Contrast Ratio

    3.34:1

    3 issues

    Reading Comfort

    ~38 CPL

    Narrow lines
    54px
    h1
    27px
    h2
    22px
    h3
    18px
    h4
    18px
    p

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

    ✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

    ❌ Very complex text: Flesch score 8/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 3.3:1).

    ✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

    ✅ Strong hierarchy: Headlines are 3.0x larger than body text.

    Buy on MyFontsFluid Type (rem)Flesch 9

    Color Palette

    9 unique colors
    Light
    #ffffff
    Background· 37.6%
    #0d4d76
    Primary· 21.7%
    #006292
    Accent· 19.900000000000002%
    #837c3b
    Secondary· 6.9%
    #dac1ad
    Secondary· 3.9%
    #95b7a9
    Secondary· 3.9%
    #6a937b
    Secondary· 2.7%
    #49716e
    Secondary· 1.8%

    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

    11 Resources

    5
    Scripts
    6
    Styles
    0
    Async
    0
    Defer

    Top Script Sources

    local(5)

    Website Identity

    hereon.de

    Location detected: 🇩🇪 Germanyvia tld
    en

    Sponsored

    Last analyzed: 11 May 2026 at 08:10

    Historical Analysis & Change Tracking

    hereon.de Technology Stack - Built With Tailwind CSS, Font Awesome, Apache, Foundation | StackOptic | StackOptic