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jenoptik.de

https://jenoptik.de· First analyzed 02 Jun 2026· Updated 02 Jun 2026
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jenoptik.de
Desktop screenshot of jenoptik.de
Mobile screenshot of jenoptik.de
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Hosting Provider

Oevermann Networks GmbH

IP Address

87.79.4.123

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Cologne, Germany

ASN

AS8422

Organization

Oevermann Networks GmbH

Nameservers

ns2.jenoptik.com.ns17.domserver.de.ns16.domserver.de.ns1.jenoptik.com.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
721 ms10%
Speed Index
937 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.4 MB
37 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
HubSpot CMS

Technology Stack

2 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Marketing

1
HubSpot

SEO Analysis

B76/100
23
6
0
Meta Tags12/15
Content10/12
Headings8/8
Technical19/25
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social5/5
Freshness2/4
Mobile4/4
Indexability3/3
J
jenoptik.dejenoptik.de

Technologie-Partner für Optik, Photonik und Optoelektronik | Jenoptik

Die Welt verändert sich mit Lichtgeschwindigkeit. Wir nutzen das Potenzial des Lichts, um unsere Kunden in den weltweiten Märkten voranzubringen!

Title Length69 chars

Recommended: 50-60 chars (~413px / 580px)

Description Length145 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    1 URLs

    1 sub-sitemaps

    robots.txt

    7 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    10/100
    Poor
    3 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

    D45/100
    Bot Access
    20/25
    Machine Read.
    8/25
    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
    data-nosnippet

    Machine Readability

    llms.txt
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    nav
    Text ratio:2%
    Words:625
    Token eff.:Optimal
    Depth:1/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary41w
    Descriptive Headingsavg 5.4w
    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
    83/100
    13
    Passed
    2
    Critical
    1
    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...
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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.
    65/100
    B
    143 mg
    CO₂e / view
    1.4 MB
    Page Weight
    60%
    Cleaner Than
    New Visitor
    164 mg
    vs
    Returning (cached)
    82 mg
    Annual (10K/mo)
    17.2 kg
    Emission Segments
    Data Center
    7 mg
    Network
    42 mg
    Device
    94 mg
    Resource Breakdown
    JavaScript
    388.6 KB
    Images
    413.8 KB
    CSS
    511.4 KB
    Fonts
    54.3 KB
    HTML
    50.6 KB
    Other
    654 B
    Green Hosting Verified
    NetCologne GmbH
    GWF Verified
    4 recommendations
    • •Carbon footprint recommendation preview...
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    A

    Security Score

    86%Very Good
    Interactive

    HTTPS

    No WAF

    123d

    Certificate Details

    Type

    Organization Validated (OV)

    Certificate Authority

    DigiCert Inc

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-384

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    19.03.2026

    Valid Until

    03.10.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (20)

    www.jenoptik.comextranet.jenoptik.comfocus.jenoptik.comjenoptik.cajenoptik.chjenoptik.co.jpjenoptik.co.krjenoptik.com+12 more

    SHA-256 Fingerprint

    E9:15:F5:9A:2C:B1:E7:48:EC:A9:9E:AE:77:5E:69:70:60:06:91:C3...

    Top Recommendations

    Security recommendation preview

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    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🔴 No Cache(no-cache, no-store)
    content-encoding
    📦 Gzip(gzip)
    content-length
    51485
    content-security-policy
    default-src 'self' https://cdn.consentmanager.mgr.consensu.o...
    content-type
    text/html; charset=utf-8
    date
    Tue, 02 Jun 2026 09:47:25 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    100

    SPF
    DKIM
    DMARC

    DMARC Policy

    Reject (Strictest)

    MX Records (2)

    mailgw2.jenoptik.com
    mailgw1.jenoptik.com

    Domain Information

    jenoptik.de

    Last Updated

    12.02.2026

    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

    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
    78/100
    Mobile Friendly26 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
    1 recommendation
    • •Mobile compatibility recommendation preview...
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    Typography & Readability

    Nunito Sans

    WCAG Partial
    73/100
    Readability
    /30
    24/30

    18px · LH 1.40

    Hierarchy
    /20
    14/20

    1.56x ratio · ✓ H1→H6

    WCAG
    /25
    15/25

    4.43:1 min contrast

    Performance
    /25
    20/25

    1 font · 1 req

    Heading Font

    Nunito Sans

    Sans28px

    Body Font

    Nunito Sans

    Sans18px

    Contrast Ratio

    4.43:1

    6 issues

    Reading Comfort

    ~36 CPL

    Narrow lines
    28px
    h1
    70px
    h2
    18px
    h3
    18px
    p
    Augmented Fourth
    Scale

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

    ✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

    ❌ Very complex text: Flesch score 18/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 6 elements below WCAG AA threshold (min 4.4:1).

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

    ✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

    Buy on MyFontsFluid Type (rem)Flesch 18

    Color Palette

    10 unique colors
    Light
    #e8e5e9
    Secondary· 18.500000000000004%
    #140e30
    Accent· 23%
    #b63e9d
    Primary· 8.5%
    #15243f
    Secondary· 8.3%
    #267f77
    Accent· 8.2%
    #d37fb8
    Secondary· 5.8%
    #3e4377
    Secondary· 5.3%
    #0c3252
    Accent· 4.3%

    Business & Marketing Stack

    3 Tools Detected

    Enterprise

    CRM Systems

    1
    HubSpotMid-Market

    Customer Relationship Management platforms

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    Privacy & Cookies

    1
    CookiebotMid-Market

    Cookie consent and privacy compliance tools

    3

    Categories

    3

    Total Tools

    0

    Enterprise

    2

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    19 Resources

    18
    Scripts
    1
    Styles
    11
    Async
    0
    Defer

    Top Script Sources

    local(8)js-eu1.hs-scripts.com(2)cdn.consentmanager.net(2)js-eu1.hs-banner.com(1)js-eu1.hs-analytics.net(1)

    Website Identity

    jenoptik.de

    Location detected: 🇩🇪 Germanyvia tld
    de-DE

    Sponsored

    Last analyzed: 02 Jun 2026 at 09:47

    Historical Analysis & Change Tracking

    jenoptik.de Technology Stack - Built With Tailwind CSS, HubSpot | StackOptic | StackOptic