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kern-sohn.com

https://kern-sohn.com· First analyzed 14 May 2026· Updated 14 May 2026
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kern-sohn.com
Desktop screenshot of kern-sohn.com
Mobile screenshot of kern-sohn.com
Mobile

Sponsored

Hosting Provider

Sylphen GmbH & Co.

IP Address

62.27.44.212

Site Location

🇩🇪 Balingen-Frommern, Germanyvia schema_nap

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS12312

Organization

Sylphen GmbH & Co.

Server

Apache

Nameservers

ns43.domaincontrol.com.ns44.domaincontrol.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
562 ms10%
Speed Index
731 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.3 MB
39 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
Infrastructure
Hosting
Sylphen GmbH & Co.

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

6 Technologies Detected

Libraries

1
jQueryv3.6.0

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Analytics

1
Google Analytics

Tag Managers

1
Google Tag Manager

Web Servers

1
Apache

SEO Analysis

B79/100
22
7
0
Meta Tags15/15
Content10/12
Headings8/8
Technical25/25
E-E-A-T2/7
Images3/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile3/4
Indexability3/3
K
kern-sohn.comkern-sohn.com

KERN & SOHN: Experte für Waagen, Mikroskope & Messgeräte

Hersteller von präzisen & langlebigen Waagen, Mikroskopen & Messinstrumenten ✓180 Jahre Erfahrung ✓mehr als 5.000 Produkt ✓hoher Service

Title Length56 chars

Recommended: 50-60 chars (~351px / 580px)

Description Length136 chars

Recommended: 120-160 chars

Issues (0)

    7 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    7 URLs

    7 sub-sitemaps

    robots.txt

    27 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    39/100
    Needs Work
    11 10

    Sponsored

    AI & LLM Readiness

    F38/100
    Bot Access
    17/25
    Machine Read.
    7/25
    Schema Data
    3/25
    Citation
    11/25

    AI Bot Access

    9/14 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:7%
    Words:2,160
    Token eff.:Optimal

    Structured Data

    1 JSON-LD
    Organization×1.1
    sameAs entity links

    Citation Readiness

    Opening Summary120w
    Descriptive Headingsavg 4.5w
    Canonical URL
    Open Graph0/3
    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.
    B
    73/100
    12
    Passed
    3
    Critical
    1
    Warnings
    Images & Alt Text
    10/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    18/20
    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
    11/15
    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.
    3 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.
    44/100
    C
    170 mg
    CO₂e / view
    1.3 MB
    Page Weight
    70%
    Cleaner Than
    New Visitor
    195 mg
    vs
    Returning (cached)
    97 mg
    Annual (10K/mo)
    20.4 kg
    Emission Segments
    Data Center
    38 mg
    Network
    41 mg
    Device
    91 mg
    Resource Breakdown
    JavaScript
    187.1 KB
    Images
    954.7 KB
    CSS
    217.2 KB
    HTML
    16.9 KB
    Green Hosting Not Verified
    Sylphen GmbH & Co.
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    21%Critical
    Interactive

    HTTPS

    No WAF

    214d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Sectigo Limited

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    13.11.2025

    Valid Until

    14.12.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    *.kern-sohn.comkern-sohn.com

    SHA-256 Fingerprint

    9A:00:28:D8:64:8D:88:D7:89:71:EB:FD:27:78:1F:7D:A9:09:FD:1A...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🟡 1s(max-age=1)
    content-encoding
    📦 Gzip(gzip)
    content-length
    16963
    content-type
    text/html; charset=utf-8
    date
    Thu, 14 May 2026 19:41:17 GMT
    expires
    Thu, 14 May 2026 19:41:18 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    100

    SPF
    DKIM
    DMARC

    DMARC Policy

    Reject (Strictest)

    MX Records (4)

    mx03.hornetsecurity.com
    mx02.hornetsecurity.com
    mx04.hornetsecurity.com
    mx01.hornetsecurity.com

    Domain Information

    kern-sohn.com

    Domain Age
    25y 9m

    Created

    21.08.2000

    Expires

    21.08.2026

    Last Updated

    20.08.2025

    Registrar

    Mesh Digital Limited

    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
    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=1.0
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Fira Sans

    WCAG AA
    69/100
    Readability
    /30
    19/30

    16px · LH --

    Hierarchy
    /20
    12/20

    1.5x ratio · ✓ H1→H6

    WCAG
    /25
    22/25

    5.74:1 min contrast

    Performance
    /25
    16/25

    1 font · 6 req

    Heading Font

    Fira Sans

    Sans24px

    Body Font

    Fira Sans

    Sans16px

    Contrast Ratio

    5.74:1

    WCAG AA (≥4.5:1)

    Reading Comfort

    ~37 CPL

    Narrow lines
    24px
    h1
    21px
    h2
    18px
    h3
    16px
    p

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

    ❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

    ✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.7:1).

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

    ✅ Lean font stack: 1 font families keeps load times fast.

    ✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

    Buy on MyFontsFlesch 0

    Color Palette

    9 unique colors
    2.49:1 Fail Light
    #ffffff
    Primary· 74.29999999999998%
    #a3a4a7
    Other· 3.3%
    #3e588c
    Secondary· 4.1%
    #739eba
    Secondary· 3.4%
    #a5bfca
    Secondary· 2.2%

    Business & Marketing Stack

    3 Tools Detected

    Advanced

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Privacy & Cookies

    1
    CookiebotMid-Market

    Cookie consent and privacy compliance tools

    2

    Categories

    3

    Total Tools

    0

    Enterprise

    1

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Sponsored

    Scripts & Styles

    14 Resources

    9
    Scripts
    5
    Styles
    6
    Async
    0
    Defer

    Top Script Sources

    kern-sohn.com(3)consent.cookiebot.com(2)cdn.doofinder.com(2)googletagmanager.com(1)eu1-config.doofinder.com(1)

    Website Identity

    KERN & SOHN GmbH

    KERN & SOHN GmbH

    Organization
    info@kern-sohn.com
    +49743399330
    www.kern-sohn.com/
    25 years old

    Ziegelei 1, Balingen-Frommern

    72336, Balingen-Frommern

    DE

    Location detected: 🇩🇪 Germany, Balingen-Frommernvia schema_nap
    Mesh Digital Limitedde

    Sponsored

    Last analyzed: 14 May 2026 at 19:41

    Historical Analysis & Change Tracking