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polarstern-energie.de

https://polarstern-energie.de· First analyzed 22 May 2026· Updated 22 May 2026
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polarstern-energie.de
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Mobile

Sponsored

Hosting Provider

Microsoft Azure
azure.microsoft.com

IP Address

20.82.12.44

Site Location

🇩🇪 München, Germanyvia schema_nap

Server Location

🇳🇱 Amsterdam, Netherlands

ASN

AS8075

Organization

Microsoft Azure Cloud (westeurope)

CDN

Azure Cdn

Nameservers

ns4-35.azure-dns.info.ns1-35.azure-dns.com.ns2-35.azure-dns.net.ns3-35.azure-dns.org.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
700 ms10%
Speed Index
910 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.6 MB
128 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

JAMstack
⚙️ SSR
Decoupled
Frontend
Framework
Nuxt.js
Styling
Tailwind CSS
API
Data Source
Headless CMS
Sanity
Infrastructure
Hosting
Microsoft Azure
CDN
Azure Cdn

Progressive Web App

Web ManifestApple Touch Icon

Detected API Sources

https://cdn.sanity.io/files/um...https://cdn.sanity.io/files/um...

Technology Stack

7 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Sentry

Meta Frameworks

1
Nuxt.js

Other

1
Lottie

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

SEO Analysis

B78/100
22
6
0
Meta Tags14/15
Content10/12
Headings8/8
Technical20/25
E-E-A-T2/7
Images3/7
Links5/5
URL5/5
Social3/5
Freshness2/4
Mobile3/4
Indexability3/3
P
polarstern-energie.depolarstern-energie.de

Polarstern: 100 % saubere Energie. Wirklich. | Polarstern Energie

Strom & Gas aus nachhaltiger Erzeugung. Für die weltweite Energiewende. Zusammen verändern wir mit Energie die Welt. Wirklich.

Title Length65 chars

Recommended: 50-60 chars (~382px / 580px)

Description Length126 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    636 URLs

    robots.txt

    3 rules

    Sitemap reference found

    Allows all crawlers

    Local SEO

    Local Search Readiness

    36/100
    Needs Work
    10 11

    Sponsored

    AI & LLM Readiness

    F37/100
    Bot Access
    20/25
    Machine Read.
    1/25
    Schema Data
    6/25
    Citation
    10/25

    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:3%
    Words:3,340
    Token eff.:Poor Structure

    Structured Data

    6 JSON-LD
    Organization×1.1WebSite
    sameAs entity links

    Citation Readiness

    Opening Summary34w
    Descriptive Headings
    Canonical URL
    Open Graph3/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (11)
    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
    84/100
    15
    Passed
    0
    Critical
    1
    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
    5/15
    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
    15/15
    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.
    1 recommendation
    • •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.
    54/100
    C
    160 mg
    CO₂e / view
    1.6 MB
    Page Weight
    60%
    Cleaner Than
    New Visitor
    183 mg
    vs
    Returning (cached)
    92 mg
    Annual (10K/mo)
    19.2 kg
    Emission Segments
    Data Center
    8 mg
    Network
    47 mg
    Device
    105 mg
    Resource Breakdown
    JavaScript
    1.0 MB
    Images
    316.2 KB
    CSS
    92.3 KB
    HTML
    28.8 KB
    Other
    102.2 KB
    Green Hosting Verified
    Microsoft Azure
    Provider Match
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    D

    Security Score

    51%Poor
    Interactive

    HTTPS

    No WAF

    95d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    DigiCert Inc

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    26.02.2026

    Valid Until

    25.08.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (1)

    www.polarstern-energie.de

    SHA-256 Fingerprint

    BC:EF:6F:DE:B8:E6:BE:41:F6:8F:D7:16:67:BF:DF:80:5B:67:07:5E...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-methods
    GET, OPTIONS
    access-control-allow-origin
    https://polarsternenergie.b2clogin.com
    cache-control
    🔴 No Cache(private, no-cache, no-store, max-age=0, must-revalidate)
    content-encoding
    ⚡ Brotli(br)
    content-type
    text/html
    date
    Fri, 22 May 2026 16:46:33 GMT
    Good Warning Issue

    Email Infrastructure

    Microsoft 365

    Score

    95

    SPF
    DKIM
    DMARC

    DMARC Policy

    Reject (Strictest)

    MX Records (1)

    polarsternenergie-de02e.mail.protection.outlook.com

    Domain Information

    polarstern-energie.de

    Last Updated

    28.03.2024

    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
    Data Protection Officer mentioned
    Legitimate interest basis 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.
    B
    79/100
    Mobile Friendly24 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
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Helvetica LT W01

    WCAG Partial
    74/100
    Readability
    /30
    22/30

    16px · LH 1.50

    Hierarchy
    /20
    18/20

    3x ratio · ✓ H1→H6

    WCAG
    /25
    18/25

    1:1 min contrast

    Performance
    /25
    16/25

    1 font

    Heading Font

    Helvetica LT W01

    Sans48px

    Body Font

    Helvetica LT W01

    Sans16px

    Contrast Ratio

    1:1

    5 issues

    Reading Comfort

    ~37 CPL

    Narrow lines
    48px
    h1
    36px
    h2
    24px
    h3
    16px
    p

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

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

    ⚠️ Hard to read: Flesch score 36/100. Simplify sentences for wider reach.

    ⚠️ Partial contrast: 5 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 3.0x larger than body text.

    Buy on MyFontsFluid Type (rem)Flesch 36

    Color Palette

    6 unique colors
    15.68:1 AAA Light
    #ffffff
    Background· 34.3%
    #212421
    Other· 17.1%
    #070b0b
    Primary· 18.7%
    #2e375b
    Secondary· 1.5%

    Business & Marketing Stack

    4 Tools Detected

    Enterprise

    Marketing Automation

    1
    ConvertKitCreator

    Email marketing and automation platforms

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Privacy & Cookies

    1
    CookiebotMid-Market

    Cookie consent and privacy compliance tools

    3

    Categories

    4

    Total Tools

    0

    Enterprise

    1

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    22 Resources

    12
    Scripts
    10
    Styles
    6
    Async
    1
    Defer

    Top Script Sources

    consent.cookiebot.com(3)googletagmanager.com(2)dt.polarstern-energie.de(2)js.zohocdn.com(2)local(1)

    Website Identity

    Polarstern GmbH

    Polarstern GmbH

    Organization

    Polarstern Energie ist der erste Gemeinwohl-Ökonomie-bilanzierende Energieversorger Deutschlands und verkauft Ökostrom aus 100 % Wasser-, Wind- und Solarkraft sowie Ökogas und Energieprodukte wie Autostrom, Wärmepumpenstrom und andere.

    hallo@polarstern-energie.de
    +4989 309 042 911
    www.polarstern-energie.de

    Lindwurmstraße 88, München

    80337, München

    DE

    Location detected: 🇩🇪 Germany, Münchenvia schema_nap
    📧 Microsoft 365de

    Sponsored

    Last analyzed: 22 May 2026 at 16:46

    Historical Analysis & Change Tracking