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visible-learning.org

https://visible-learning.org· First analyzed 10 May 2026· Updated 10 May 2026
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visible-learning.org
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Mobile

Sponsored

Hosting Provider

Neue Medien Muennich GmbH

IP Address

85.13.140.190

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Neusalza-Spremberg, Germany

ASN

AS34788

Organization

Neue Medien Muennich GmbH

Server

Apache

Nameservers

ns6.kasserver.com.ns5.kasserver.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
607 ms10%
Speed Index
789 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.6 MB
72 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
CMS
WordPressv6.5.8
Infrastructure
Hosting
Neue Medien Muennich GmbH

Technology Stack

27 Technologies Detected

Plugins

15
Shariff SharingGs Bookshowcase ProSimple Download MonitorCaptcha
Contact Form 7
Meteor Slides
Pc Google Analytics
Table Of Contents PlusTabs ResponsiveYet Another Related Posts PluginTw PaginationFd FootnotesAll In One ButtonsWpcf7 Recaptcha
Yoast SEO

Libraries

2
jQueryv3.7.1
Animate.css

CSS Frameworks

2
Bootstrap
Tailwind CSS

Analytics

2
Google Analytics
Segment

UI Components

1
Owl Carousel

Other

1
Modernizr

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Web Servers

1
Apache

Security

1
reCAPTCHA

SEO Analysis

B70/100
21
7
0
Meta Tags10/15
Content5/12
Headings8/8
Technical21/25
E-E-A-T0/7
Images5/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile3/4
Indexability3/3
V
visible-learning.orgvisible-learning.org

VISIBLE LEARNING - Information About What Works Best For Learning

Information About What Works Best For Learning

Title Length65 chars

Recommended: 50-60 chars (~401px / 580px)

Description Length46 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

    4 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    16/100
    Poor
    4 13 1

    This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

    Sponsored

    AI & LLM Readiness

    D40/100
    Bot Access
    20/25
    Machine Read.
    4/25
    Schema Data
    3/25
    Citation
    13/25

    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:2%
    Words:170
    Token eff.:Too Short
    Sections/1K:23.5

    Structured Data

    1 JSON-LD
    WebSiteSearchAction

    Citation Readiness

    Opening Summary41w
    Descriptive Headingsavg 2.8w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    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.
    B
    76/100
    11
    Passed
    3
    Critical
    0
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    14/20
    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
    1/15
    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.
    55/100
    C
    163 mg
    CO₂e / view
    1.6 MB
    Page Weight
    60%
    Cleaner Than
    New Visitor
    187 mg
    vs
    Returning (cached)
    93 mg
    Annual (10K/mo)
    19.6 kg
    Emission Segments
    Data Center
    8 mg
    Network
    48 mg
    Device
    107 mg
    Resource Breakdown
    JavaScript
    186.2 KB
    Images
    1.3 MB
    CSS
    115.7 KB
    Fonts
    943 B
    HTML
    11.6 KB
    Green Hosting Verified
    ALL-INKL.COM
    GWF Verified
    3 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    21%Critical
    Interactive

    HTTPS

    No WAF

    53d

    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

    04.04.2026

    Valid Until

    03.07.2026

    Subject Alternative Names (2)

    visible-learning.orgwww.visible-learning.org

    SHA-256 Fingerprint

    A9:EA:92:B8:3E:39:B7:6C:E2:1F:6D:A5:99:3E:0A:63:9C:5C:77:42...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    content-encoding
    ⚡ Brotli(br)
    content-type
    text/html; charset=UTF-8
    date
    Sun, 10 May 2026 18:10:09 GMT
    link
    <https://visible-learning.org/wp-json/>; rel="https://api.w....
    server
    Apache
    vary
    Accept-Encoding,User-Agent
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    45

    SPF
    DKIM
    DMARC

    MX Records (1)

    w0095cf4.kasserver.com

    Domain Information

    visible-learning.org

    Domain Age
    13y 4m

    Created

    08.01.2013

    Expires

    08.01.2027

    Last Updated

    22.02.2026

    Registrar

    RegistryGate GmbH

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    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
    61/100
    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, user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    arial

    WCAG Partial
    80/100
    Readability
    /30
    26/30

    18px · LH 1.50

    Hierarchy
    /20
    15/20

    1.94x ratio · ✓ H1→H6

    WCAG
    /25
    20/25

    2.27:1 min contrast

    Performance
    /25
    19/25

    System fonts

    Heading Font

    arial

    Sans35px

    Body Font

    arial

    Sans18px

    Contrast Ratio

    2.27:1

    2 issues

    Reading Comfort

    ~33 CPL

    Narrow lines
    35px
    h1
    24px
    h2
    24px
    h3
    18px
    p

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

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

    ⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 2.3:1).

    ✅ 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).

    ✅ System fonts: Zero font loading delay — best possible LCP impact.

    GGoogle FontsFluid Type (rem)Flesch 63

    Color Palette

    6 unique colors
    Light
    #efefef
    Background· 62%
    #a15069
    Primary· 4.8%
    #8599b2
    Secondary· 4.4%
    #eee3d7
    Secondary· 1.8%

    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

    30 Resources

    20
    Scripts
    10
    Styles
    2
    Async
    0
    Defer

    Top Script Sources

    visible-learning.org(18)gstatic.com(1)google-analytics.com(1)

    Website Identity

    VISIBLE LEARNING

    visible-learning.org/
    13 years old
    Location detected: 🇩🇪 Germanyvia ip
    RegistryGate GmbHen-US

    Sponsored

    Last analyzed: 10 May 2026 at 18:10

    Historical Analysis & Change Tracking