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nullbarriere.de

https://nullbarriere.de· First analyzed 17 May 2026· Updated 17 May 2026
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nullbarriere.de
Desktop screenshot of nullbarriere.de
Mobile screenshot of nullbarriere.de
Mobile

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Hosting Provider

Hetzner
hetzner.com

IP Address

78.46.91.5

Site Location

🇩🇪 Germanyvia phone

Server Location

🇩🇪 Falkenstein, Germany

ASN

AS24940

Organization

Hetzner

Server

Apache

Nameservers

ns1099.ui-dns.biz.ns1099.ui-dns.org.ns1099.ui-dns.de.ns1099.ui-dns.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
625 ms10%
Speed Index
812 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1 MB
35 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Hetzner

Technology Stack

3 Technologies Detected

Libraries

1
jQueryv3.5.1

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Apache

SEO Analysis

B77/100
20
6
0
Meta Tags14/15
Content11/12
Headings8/8
Technical20/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
N
nullbarriere.denullbarriere.de

nullbarriere.de - barrierefrei planen - bauen - wohnen

Barrierefrei planen bauen wohnen mit nullbarriere.de - Gesetze, DIN Normen, Informationen und Fachwissen, beginnend beim öffentlichen Verkehrsraum und Gebäud...

Description truncated.
Title Length54 chars

Recommended: 50-60 chars (~322px / 580px)

Description Length180 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    707 URLs

    robots.txt

    28 rules

    Local SEO

    Local Search Readiness

    12/100
    Poor
    4 11 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.
    17/25
    Schema Data
    0/25
    Citation
    8/25

    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
    header/footer
    Text ratio:21%
    Words:1,378
    Token eff.:Optimal
    Sections/1K:26.9
    Depth:1/5

    Structured Data

    Microdata

    Citation Readiness

    Opening Summary42w
    Descriptive Headingsavg 2.9w
    Canonical URL
    Open Graph2/3
    Twitter Card1/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (10)
    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.
    C
    66/100
    12
    Passed
    3
    Critical
    4
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    15/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    0/15
    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
    5/15
    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.
    62/100
    B
    105 mg
    CO₂e / view
    1.0 MB
    Page Weight
    70%
    Cleaner Than
    New Visitor
    120 mg
    vs
    Returning (cached)
    60 mg
    Annual (10K/mo)
    12.6 kg
    Emission Segments
    Data Center
    5 mg
    Network
    31 mg
    Device
    69 mg
    Resource Breakdown
    JavaScript
    35.5 KB
    Images
    684.5 KB
    CSS
    304.6 KB
    HTML
    13.6 KB
    Green Hosting Verified
    Hetzner Online GmbH
    GWF Verified
    3 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    0%Critical
    Critical / Transactional

    HTTPS

    No WAF

    70d

    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

    28.04.2026

    Valid Until

    27.07.2026

    Subject Alternative Names (12)

    din18040.deensona.dehyperjoint.comnullbarriere.deproxyprog.detreppauf.dewww.din18040.dewww.ensona.de+4 more

    SHA-256 Fingerprint

    07:86:CB:61:12:39:B2:80:18:2C:BE:0B:7C:5D:F6:FD:1B:E5:71:D3...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🔴 No Cache(no-store, no-cache, must-revalidate, post-check=0, pre-check...)
    content-encoding
    📦 Gzip(gzip)
    content-length
    13589
    content-script-type
    text/javascript
    content-style-type
    text/css
    content-type
    text/html; charset=UTF-8
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    70

    SPF
    DKIM
    DMARC

    DMARC Policy

    Reject (Strictest)

    MX Records (2)

    mx00.ionos.de
    mx01.ionos.de

    Domain Information

    nullbarriere.de

    Last Updated

    12.08.2018

    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.
    C
    63/100
    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
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Hyperlegible

    WCAG AA
    69/100
    Readability
    /30
    15/30

    14px · LH 1.33

    Hierarchy
    /20
    19/20

    2.22x ratio · ✓ H1→H6

    WCAG
    /25
    19/25

    6.44:1 min contrast

    Performance
    /25
    16/25

    1 font · 5 req

    Heading Font

    Hyperlegible

    Sans32px

    Body Font

    Hyperlegible

    Sans14px

    Contrast Ratio

    6.44:1

    WCAG AA (≥4.5:1)

    Reading Comfort

    ~38 CPL

    Narrow lines
    32px
    h1
    19px
    h2
    17px
    h3
    14px
    h4
    14px
    p

    ⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

    ⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

    ❌ Very complex text: Flesch score 15/100. Consider shorter sentences and simpler words.

    ✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 6.4:1).

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

    ✅ Strong hierarchy: Headlines are 2.2x larger than body text.

    Buy on MyFontsFlesch 15

    Color Palette

    5 unique colors
    9.14:1 AAA Light
    #ffffff
    Primary· 79.4%
    #44494a
    Other· 4.7%
    #e2caaa
    Secondary· 5.7%
    #e8eef1
    Primary· 3.3%

    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
    0
    Defer

    Top Script Sources

    nullbarriere.de(4)

    Website Identity

    nullbarriere.de

    +493052696250
    Location detected: 🇩🇪 Germanyvia phone
    de

    Social Profiles

    FacebookX (Twitter)

    Sponsored

    Last analyzed: 17 May 2026 at 13:06

    Historical Analysis & Change Tracking