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zwickroell.com

https://zwickroell.com· First analyzed 13 May 2026· Updated 13 May 2026
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zwickroell.com
Desktop screenshot of zwickroell.com
Mobile screenshot of zwickroell.com
Mobile

Sponsored

Hosting Provider

Droptop GmbH

IP Address

185.185.24.23

Site Location

🇩🇪 Ulm, Germanyvia schema_nap

Server Location

🇩🇪 Schwielowsee, Germany

ASN

AS201206

Organization

Droptop GmbH

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns.udag.de.ns.udag.net.ns.udag.org.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
454 ms10%
Speed Index
590 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
4.8 MB
60 requests

Image Optimization

Responsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
TYPO3

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

2 Technologies Detected

CSS Frameworks

1
Tailwind CSS

CDN

1
Cloudflare

SEO Analysis

A81/100
25
5
0
Meta Tags13/15
Content12/12
Headings8/8
Technical24/25
E-E-A-T2/7
Images3/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile1/4
Indexability3/3
Z
zwickroell.comzwickroell.com

ZwickRoell Materials Testing | ZwickRoell

ZwickRoell is a worldwide leading supplier of materials testing machines. Our materials testing machines are used in R&D and for quality assurance in more th...

Description truncated.
Title Length41 chars

Recommended: 50-60 chars (~240px / 580px)

Description Length174 chars

Recommended: 120-160 chars

Issues (0)

    5 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    1 URLs

    1 sub-sitemaps

    robots.txt

    81 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    42/100
    Fair
    12 10

    Sponsored

    AI & LLM Readiness

    D55/100
    Bot Access
    20/25
    Machine Read.
    17/25
    Schema Data
    3/25
    Citation
    15/25

    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.txtinvalid
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    nav
    Text ratio:4%
    Words:790
    Token eff.:Optimal
    Sections/1K:11.4
    Depth:1/5

    Structured Data

    2 JSON-LD
    Organization×1.1
    sameAs entity links

    Citation Readiness

    Opening Summary33w
    Descriptive Headingsavg 3.7w
    Canonical URL
    Open Graph2/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (9)
    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
    89/100
    14
    Passed
    1
    Critical
    0
    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
    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
    8/15
    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.
    44/100
    F
    498 mg
    CO₂e / view
    4.8 MB
    Page Weight
    15%
    Cleaner Than
    New Visitor
    569 mg
    vs
    Returning (cached)
    285 mg
    Annual (10K/mo)
    59.7 kg
    Emission Segments
    Data Center
    24 mg
    Network
    146 mg
    Device
    327 mg
    Resource Breakdown
    JavaScript
    88.8 KB
    Images
    4.4 MB
    CSS
    252.9 KB
    HTML
    28.0 KB
    Other
    5.2 KB
    Green Hosting Verified
    Linevast
    GWF Verified
    3 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    A+

    Security Score

    100%Excellent
    Static / Informational

    HTTPS

    WAF

    87d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Google Trust Services

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-256

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    10.05.2026

    Valid Until

    08.08.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (1)

    www.zwickroell.com

    SHA-256 Fingerprint

    6C:E6:44:9D:B9:AE:EB:85:E5:AF:6F:89:12:F2:D1:7B:14:02:AB:7C...

    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🟡 0s(public, max-age=0)
    cf-cache-status
    DYNAMIC
    cf-ray🇫🇷 Paris
    9fafd9109bf10c47-CDG
    content-encoding
    ⚡ Brotli(br)
    content-language
    en-US
    content-security-policy
    default-src 'self' 'unsafe-inline' 'unsafe-eval' data: blob:...
    Good Warning Issue

    Email Infrastructure

    Microsoft 365

    Score

    70

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (1)

    zwickroell-com.mail.protection.outlook.com

    Domain Information

    zwickroell.com

    Domain Age
    24y 9m

    Created

    24.07.2001

    Expires

    24.07.2026

    Last Updated

    24.03.2026

    Registrar

    united-domains GmbH

    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.
    A
    80/100
    Mobile Friendly19 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, shrink-to-fit=no
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    DINWebPro

    WCAG Partial
    72/100
    Readability
    /30
    20/30

    18px · LH 1.62

    Hierarchy
    /20
    17/20

    2.5x ratio · ✓ H1→H6

    WCAG
    /25
    15/25

    1.91:1 min contrast

    Performance
    /25
    20/25

    1 font · 3 req

    Heading Font

    DINWebPro

    Sans45px

    Body Font

    DINWebPro

    Sans18px

    Contrast Ratio

    1.91:1

    1 issue

    Reading Comfort

    ~38 CPL

    Narrow lines
    45px
    h1
    45px
    h2
    18px
    p
    Minor Second
    Scale

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

    ❌ Very complex text: Flesch score 17/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 1.9:1).

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

    ✅ Strong hierarchy: Headlines are 2.5x larger than body text.

    ❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

    Buy on MyFontsFlesch 17

    Color Palette

    10 unique colors
    5.14:1 AA Light
    #ffffff
    Primary· 69.2%
    #7a6879
    Secondary· 4.3%
    #d1d9d9
    Secondary· 3.6%
    #ece8e6
    Secondary· 3.4%
    #241852
    Accent· 3%
    #bb9998
    Secondary· 2.9%
    #40395f
    Secondary· 2.7%
    #78446b
    Secondary· 2%

    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

    4 Resources

    3
    Scripts
    1
    Styles
    0
    Async
    0
    Defer

    Top Script Sources

    local(3)

    Website Identity

    ZwickRoell

    Organization
    +33 387 502 113
    www.zwickroell.com
    24 years old

    August-Nagel-Straße 11, Ulm

    89079, Ulm

    DE

    Location detected: 🇩🇪 Germany, Ulmvia schema_nap
    united-domains GmbH📧 Microsoft 365en

    Sponsored

    Last analyzed: 13 May 2026 at 07:11

    Historical Analysis & Change Tracking