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igb-berlin.de

https://igb-berlin.de· First analyzed 06 May 2026· Updated 06 May 2026
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igb-berlin.de
Desktop screenshot of igb-berlin.de
Mobile screenshot of igb-berlin.de
Mobile

Sponsored

Hosting Provider

Customernet

IP Address

149.233.9.85

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS203329

Organization

Customernet

Server

Apache

Nameservers

a1.fv-berlin.de.deneb.dfn.de.a2.fv-berlin.de.lampetra.igb-berlin.de.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
930 ms10%
Speed Index
1.2 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.2 MB
40 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Drupal

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

3 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Analytics

1
Matomo

Web Servers

1
Apache

SEO Analysis

B78/100
22
5
0
Meta Tags14/15
Content11/12
Headings8/8
Technical17/25
E-E-A-T3/7
Images3/7
Links5/5
URL5/5
Social3/5
Freshness2/4
Mobile4/4
Indexability3/3
I
igb-berlin.deigb-berlin.de

Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB)

Das IGB ist das bundesweit größte und eines der international führenden Forschungszentren für Binnengewässer, etwa Flüsse, Seen und Feuchtgebiete.

Title Length63 chars

Recommended: 50-60 chars (~377px / 580px)

Description Length146 chars

Recommended: 120-160 chars

Issues (0)

    5 issues found

    Upgrade to view details

    Crawlability

    Sitemap
    robots.txt

    59 rules

    Local SEO

    Local Search Readiness

    13/100
    Poor
    4 12 2

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

    Sponsored

    AI & LLM Readiness

    D48/100
    Bot Access
    20/25
    Machine Read.
    11/25
    Schema Data
    0/25
    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:12%
    Words:1,701
    Token eff.:Optimal
    Sections/1K:15.9
    Depth:1/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary24w
    Descriptive Headingsavg 6.1w
    Canonical URL
    Open Graph1/3
    Twitter Card3/3
    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
    83/100
    14
    Passed
    2
    Critical
    2
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    17/20
    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
    7/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    2 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.
    36/100
    E
    281 mg
    CO₂e / view
    2.2 MB
    Page Weight
    50%
    Cleaner Than
    New Visitor
    321 mg
    vs
    Returning (cached)
    160 mg
    Annual (10K/mo)
    33.7 kg
    Emission Segments
    Data Center
    63 mg
    Network
    67 mg
    Device
    151 mg
    Resource Breakdown
    JavaScript
    82.9 KB
    Images
    704.9 KB
    CSS
    1.4 MB
    HTML
    22.5 KB
    Green Hosting Not Verified
    Customernet
    3 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    D

    Security Score

    41%Poor
    Interactive

    HTTPS

    No WAF

    39d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    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

    15.06.2026

    Subject Alternative Names (2)

    igb-berlin.dewww.igb-berlin.de

    SHA-256 Fingerprint

    1D:83:9A:15:48:C1:2A:08:EA:2B:6B:7C:ED:AB:78:9C:98:BB:22:31...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🟡 1800s(max-age=1800, public)
    content-encoding
    📦 Gzip(gzip)
    content-language
    de
    content-length
    22714
    content-type
    text/html; charset=UTF-8
    date
    Wed, 06 May 2026 14:12:21 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    68

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (3)

    c2421.mx.srv.dfn.de
    b2421.mx.srv.dfn.de
    a2421.mx.srv.dfn.de

    Domain Information

    igb-berlin.de

    Last Updated

    28.07.2017

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    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
    65/100
    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...
    Upgrade to view recommendations

    Typography & Readability

    Roboto Slab + Roboto

    WCAG Partial
    69/100
    Readability
    /30
    19/30

    15px · LH 1.50

    Hierarchy
    /20
    15/20

    1.47x ratio · ✓ H1→H6

    WCAG
    /25
    16/25

    1:1 min contrast

    Performance
    /25
    19/25

    System fonts

    Heading Font

    Roboto Slab

    Sans22px

    Body Font

    Roboto

    Sans15px

    Contrast Ratio

    1:1

    7 issues

    Reading Comfort

    ~85 CPL

    Wide lines
    22px
    h1
    36px
    h2
    15px
    p
    Golden Ratio
    Scale

    ⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

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

    ⚠️ Wide lines: ~85 chars/line. Use max-width: 65ch for comfortable reading.

    ❌ Very complex text: Flesch score 1/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 7 elements below WCAG AA threshold (min 1.0:1).

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

    Buy on MyFontsFlesch 1

    Color Palette

    6 unique colors
    13.73:1 AAA Light
    #ffffff
    Background· 39.8%
    #2b2e2c
    Other· 8%
    #7d98a5
    Primary· 2.8%

    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

    6 Resources

    4
    Scripts
    2
    Styles
    0
    Async
    1
    Defer

    Top Script Sources

    local(4)

    Website Identity

    igb-berlin.de

    info@igb-berlin.de
    030-64181-500
    Location detected: 🇩🇪 Germanyvia tld
    de

    Social Profiles

    LinkedInBluesky

    Sponsored

    Last analyzed: 06 May 2026 at 14:13

    Historical Analysis & Change Tracking