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erf.de

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

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Hosting Provider

Cloudflare
cloudflare.com

IP Address

104.26.0.175

Site Location

🇩🇪 Germanyvia tld

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

cleo.ns.cloudflare.com.serena.ns.cloudflare.com.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
816 ms10%
Speed Index
1.1 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.7 MB
102 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
Infrastructure
Hosting
Cloudflare
CDN
Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

6 Technologies Detected

Analytics

2
Google Analytics
Matomo

CSS Frameworks

1
Tailwind CSS

Advertising

1
Taboola

CDN

1
Cloudflare

Languages

1
PHPv7.4.33

SEO Analysis

B75/100
20
7
0
Meta Tags14/15
Content10/12
Headings6/8
Technical20/25
E-E-A-T0/7
Images5/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile3/4
Indexability3/3
E
erf.deerf.de

„ERF – Der Sinnsender“ – Christliches Medienunternehmen | erf.de

Als christliches Medienunternehmen versorgt Sie ERF mit aktuellen News und spannenden Beiträgen rund um den christlichen Glauben.

Title Length64 chars

Recommended: 50-60 chars (~387px / 580px)

Description Length129 chars

Recommended: 120-160 chars

Issues (0)

    7 issues found

    Upgrade to view details

    Crawlability

    Sitemap
    robots.txt

    10 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    13/100
    Poor
    4 12 2

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

    Sponsored

    AI & LLM Readiness

    F34/100
    Bot Access
    20/25
    Machine Read.
    1/25
    Schema Data
    1/25
    Citation
    12/25

    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:9%
    Words:3,481
    Token eff.:Poor Structure

    Structured Data

    Microdata
    BreadcrumbListmicrodata

    Citation Readiness

    Opening Summary625w
    Descriptive Headingsavg 4.7w
    Canonical URL
    Open Graph3/3
    Twitter Card1/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (12)
    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
    88/100
    15
    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
    15/20
    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
    15/15
    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...
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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.
    51/100
    C
    174 mg
    CO₂e / view
    1.7 MB
    Page Weight
    60%
    Cleaner Than
    New Visitor
    199 mg
    vs
    Returning (cached)
    99 mg
    Annual (10K/mo)
    20.9 kg
    Emission Segments
    Data Center
    9 mg
    Network
    51 mg
    Device
    114 mg
    Resource Breakdown
    JavaScript
    204.0 KB
    Images
    622.4 KB
    CSS
    821.5 KB
    HTML
    18.7 KB
    Other
    54.9 KB
    Green Hosting Verified
    Cloudflare
    GWF Verified
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    5%Critical
    Critical / Transactional

    HTTPS

    WAF

    76d

    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

    24.04.2026

    Valid Until

    23.07.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    erf.de*.erf.de

    SHA-256 Fingerprint

    2D:A2:8E:18:09:BE:06:00:F9:55:E9:77:DB:6E:05:AF:52:43:0F:52...

    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)
    cf-cache-status
    DYNAMIC
    cf-ray🇮🇹 Milan
    9f7f88a72d354c63-MXP
    content-encoding
    ⚡ Brotli(br)
    content-type
    text/html; charset=UTF-8
    date
    Thu, 07 May 2026 10:27:44 GMT
    Good Warning Issue

    Email Infrastructure

    Microsoft 365

    Score

    73

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (1)

    erf-de.mail.protection.outlook.com

    Domain Information

    erf.de

    Last Updated

    04.06.2020

    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
    Legitimate interest basis 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.
    A
    83/100
    Mobile Friendly25 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
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Aglet Sans + Roboto

    WCAG Partial
    75/100
    Readability
    /30
    25/30

    18px · LH 1.50

    Hierarchy
    /20
    19/20

    2.22x ratio · ✓ H1→H6

    WCAG
    /25
    12/25

    1:1 min contrast

    Performance
    /25
    19/25

    System fonts

    Heading Font

    Aglet Sans

    Sans40px

    Body Font

    Roboto

    Sans18px

    Contrast Ratio

    1:1

    40 issues

    Reading Comfort

    ~37 CPL

    Narrow lines
    40px
    h1
    32px
    h2
    28px
    h3
    24px
    h4
    18px
    p

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

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

    ⚠️ Hard to read: Flesch score 38/100. Simplify sentences for wider reach.

    ⚠️ Partial contrast: 40 elements below WCAG AA threshold (min 1.0:1).

    ✅ 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 39

    Color Palette

    7 unique colors
    16.9:1 AAA Light
    #ffffff
    Background· 27.7%
    #1d1d1a
    Text· 6.5%
    #f0514b
    Primary· 0%
    #3c1414
    Secondary· 31.599999999999998%
    #210d0c
    Secondary· 6%
    #937876
    Secondary· 3.2%

    Business & Marketing Stack

    3 Tools Detected

    Advanced

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    Privacy & Cookies

    1
    CookiebotMid-Market

    Cookie consent and privacy compliance tools

    Social Media

    1
    Facebook SDKFree

    Social widgets and sharing tools

    3

    Categories

    3

    Total Tools

    0

    Enterprise

    1

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Sponsored

    Scripts & Styles

    16 Resources

    6
    Scripts
    10
    Styles
    2
    Async
    0
    Defer

    Top Script Sources

    consent.cookiebot.eu(2)local(2)stats.erf.de(1)consentcdn.cookiebot.eu(1)

    Website Identity

    erf.de

    info@erf.de
    Tel:+4964419571414
    Location detected: 🇩🇪 Germanyvia tld
    📧 Microsoft 365de

    Sponsored

    Last analyzed: 07 May 2026 at 10:27

    Historical Analysis & Change Tracking