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lecturio.de

https://lecturio.de· First analyzed 07 May 2026· Updated 07 May 2026
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lecturio.de
Desktop screenshot of lecturio.de
Mobile screenshot of lecturio.de
Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

3.73.4.6

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS16509

Organization

AWS EC2 (eu-central-1)

Server

Nginx

CDN

CloudFront

Nameservers

ns53.domaincontrol.com.ns54.domaincontrol.com.

Performance

95

Core Web Vitals

Weight

First Contentful Paint
1.1 s10%
Speed Index
1.5 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
121 KB
80 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPress
cms

Technology Stack

9 Technologies Detected

Fonts

2
Adobe Fonts (Typekit)Adobe Fonts

Libraries

1
jQueryv1.11.3

UI Components

1
Fancybox

CSS Frameworks

1
Tailwind CSS

Analytics

1
Google Analytics

Tag Managers

1
Google Tag Manager

Customer Support

1
Zendesk

Web Servers

1
Nginx

SEO Analysis

B73/100
20
6
0
Meta Tags14/15
Content11/12
Headings8/8
Technical19/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile1/4
Indexability3/3
L
lecturio.delecturio.de

E-Learning mit Lecturio - Jetzt flexibel online lernen!

Mit unseren zahlreichen E-Learning Videokursen für Studium, Beruf & Freizeit überall effizient & schnell online lernen. Jetzt Lecturio gratis testen & Ziele ...

Description truncated.
Title Length55 chars

Recommended: 50-60 chars (~321px / 580px)

Description Length169 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    7 URLs

    7 sub-sitemaps

    robots.txt

    26 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    4/100
    Poor
    1 15 2

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

    Sponsored

    AI & LLM Readiness

    D47/100
    Bot Access
    20/25
    Machine Read.
    12/25
    Schema Data
    0/25
    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.txt
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    nav
    Text ratio:10%
    Words:1,793
    Token eff.:Optimal
    Sections/1K:5.6
    Depth:1/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary23w
    Descriptive Headingsavg 3.9w
    Canonical URL
    Open Graph3/3
    Twitter Card0/3
    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.
    B
    79/100
    13
    Passed
    3
    Critical
    1
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    13/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    10/15
    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
    10/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    2 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
    A+
    12 mg
    CO₂e / view
    121.1 KB
    Page Weight
    95%
    Cleaner Than
    New Visitor
    14 mg
    vs
    Returning (cached)
    7 mg
    Annual (10K/mo)
    1.5 kg
    Emission Segments
    Data Center
    <0.001 g
    Network
    4 mg
    Device
    8 mg
    Resource Breakdown
    CSS
    96.9 KB
    HTML
    23.5 KB
    Other
    716 B
    Green Hosting Verified
    Amazon Web Services (AWS)
    Provider Match
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    36%Critical
    Interactive

    HTTPS

    No WAF

    151d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Amazon

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    22.03.2026

    Valid Until

    05.10.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (1)

    *.lecturio.de

    SHA-256 Fingerprint

    77:22:6F:FC:FD:0A:E1:5F:4E:2F:56:C8:18:E4:04:76:1D:41:93:11...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-credentials
    true
    cache-control
    🔴 No Cache(no-store, no-cache, must-revalidate)
    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html; charset=utf-8
    date
    Thu, 07 May 2026 08:24:43 GMT
    expires
    Thu, 19 Nov 1981 08:52:00 GMT
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    73

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (4)

    aspmx2.googlemail.com
    alt1.aspmx.l.google.com
    aspmx.l.google.com
    aspmx3.googlemail.com

    Domain Information

    lecturio.de

    Last Updated

    23.04.2024

    DNSSEC
    Not Enabled

    Privacy & Compliance

    OneTrust

    Cookie Consent Banner
    OneTrust
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: OneTrust
    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
    68/100
    Mobile Friendly6 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
    3 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Helvetica

    WCAG Partial
    66/100
    Readability
    /30
    18/30

    14px · LH 1.43

    Hierarchy
    /20
    17/20

    4.29x ratio · ✓ H1→H6

    WCAG
    /25
    16/25

    2.65:1 min contrast

    Performance
    /25
    15/25

    2 fonts · 2 req

    Heading Font

    Helvetica

    Sans60px

    Body Font

    Helvetica

    Sans14px

    Contrast Ratio

    2.65:1

    5 issues

    Reading Comfort

    ~38 CPL

    Narrow lines
    60px
    h1
    48px
    h2
    30px
    h3
    14px
    h4
    14px
    p

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

    ✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

    ❌ Very complex text: Flesch score 4/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 2.6:1).

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

    ✅ Strong hierarchy: Headlines are 4.3x larger than body text.

    AAdobe FontsBuy on MyFontsFlesch 5

    Color Palette

    6 unique colors
    Light
    #ffffff
    Background· 31.800000000000008%
    #ebece7
    Primary· 45%
    #8a7b5a
    Secondary· 7%
    #dec7ac
    Secondary· 6.4%
    #4f3820
    Secondary· 6.1%
    #99b38c
    Secondary· 3.7%

    Business & Marketing Stack

    4 Tools Detected

    Enterprise

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Privacy & Cookies

    1
    OneTrustEnterprise

    Cookie consent and privacy compliance tools

    Social Media

    1
    Facebook SDKFree

    Social widgets and sharing tools

    3

    Categories

    4

    Total Tools

    1

    Enterprise

    0

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    11 Resources

    6
    Scripts
    5
    Styles
    2
    Async
    0
    Defer

    Top Script Sources

    cookie-cdn.cookiepro.com(2)connect.facebook.com(1)googletagmanager.com(1)code.jquery.com(1)assets-cdn2.lecturio.de(1)

    Website Identity

    lecturio.de

    Location detected: 🇩🇪 Germanyvia tld
    📧 Google Workspacede

    Sponsored

    Last analyzed: 07 May 2026 at 08:24

    Historical Analysis & Change Tracking