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rheinwerk-verlag.de

https://rheinwerk-verlag.de· First analyzed 29 Apr 2026· Updated 29 Apr 2026
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rheinwerk-verlag.de
Desktop screenshot of rheinwerk-verlag.de
Mobile screenshot of rheinwerk-verlag.de
Mobile

Sponsored

Hosting Provider

IP-Projects GmbH & Co. KG

IP Address

103.241.48.3

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS48314

Organization

IP-Projects GmbH & Co. KG

Server

Nginx

Nameservers

ns4.ip-projects.de.ns3.ip-projects.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
653 ms10%
Speed Index
849 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
47 KB
38 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
IP-Projects GmbH & Co. KG

Technology Stack

6 Technologies Detected

UI Components

1
Swiper

CSS Frameworks

1
Tailwind CSS

Analytics

1
Google Analytics

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

Libraries

1
Lightbox

SEO Analysis

A83/100
26
3
0
Meta Tags15/15
Content12/12
Headings8/8
Technical22/25
E-E-A-T2/7
Images7/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
R
rheinwerk-verlag.derheinwerk-verlag.de

Rheinwerk – Der Verlag für IT, Design und Fotografie

Rheinwerk ist der führende Verlag für IT, Design und Fotografie. Unsere Bücher helfen Einsteigern und Experten bei der Aus- und Weiterbildung.

Title Length52 chars

Recommended: 50-60 chars (~312px / 580px)

Description Length142 chars

Recommended: 120-160 chars

Issues (0)

    3 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    3,056 URLs

    robots.txt

    21 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    14/100
    Poor
    4 12 1

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

    Sponsored

    AI & LLM Readiness

    F39/100
    Bot Access
    20/25
    Machine Read.
    2/25
    Schema Data
    3/25
    Citation
    14/25

    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
    data-nosnippet

    Machine Readability

    llms.txt
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    nav
    Text ratio:17%
    Words:6,483
    Token eff.:Excessive
    Depth:1/5

    Structured Data

    Microdata
    Organization×1.1microdata
    sameAs entity links

    Citation Readiness

    Opening Summary99w
    Descriptive Headingsavg 9.1w
    Canonical URL
    Open Graph0/3
    Twitter Card0/3
    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.
    A
    89/100
    15
    Passed
    1
    Critical
    0
    Warnings
    Images & Alt Text
    15/20
    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
    15/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    9/15
    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.
    63/100
    A+
    6 mg
    CO₂e / view
    46.6 KB
    Page Weight
    95%
    Cleaner Than
    New Visitor
    7 mg
    vs
    Returning (cached)
    3 mg
    Annual (10K/mo)
    696 g
    Emission Segments
    Data Center
    1 mg
    Network
    1 mg
    Device
    3 mg
    Resource Breakdown
    JavaScript
    1.1 KB
    HTML
    44.6 KB
    Other
    888 B
    Green Hosting Not Verified
    IP-Projects GmbH & Co. KG
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    C

    Security Score

    61%Fair
    Interactive

    HTTPS

    No WAF

    87d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.2

    HTTP Protocol

    HTTP/2

    Valid From

    26.04.2026

    Valid Until

    25.07.2026

    Subject Alternative Names (20)

    booksonline.rheinwerk-verlag.debooksonline.sap-press.comdistribution-registry.rheinwerk.deeba.rheinwerk-verlag.deeba.sap-press.comgalileo-press.delibrary.sap-press.comlicense.api.galileo-press.de+12 more

    SHA-256 Fingerprint

    75:BC:D7:56:8D:CC:0C:3B:BA:EA:AB:B5:F7:0A:57:77:24:28:48:FE...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html; charset=utf-8
    date
    Wed, 29 Apr 2026 12:45:25 GMT
    referrer-policy
    no-referrer-when-downgrade
    server
    nginx
    strict-transport-security
    max-age=31536000; includeSubDomains
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    70

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (4)

    mx2.heinlein-support.de
    mx3.heinlein-support.de
    mx1.heinlein-support.de
    mail.rheinwerk-verlag.de

    Domain Information

    rheinwerk-verlag.de

    Last Updated

    20.02.2026

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    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 Friendly16 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
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Helvetica Neue

    WCAG Partial
    72/100
    Readability
    /30
    19/30

    14px · LH 1.50

    Hierarchy
    /20
    16/20

    1.71x ratio · ✓ H1→H6

    WCAG
    /25
    17/25

    1.06:1 min contrast

    Performance
    /25
    20/25

    System fonts

    Heading Font

    Helvetica Neue

    Sans24px

    Body Font

    Helvetica Neue

    Sans14px

    Contrast Ratio

    1.06:1

    10 issues

    Reading Comfort

    ~46 CPL

    Optimal (45–75)
    24px
    h1
    24px
    h2
    16px
    h3
    14px
    p

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

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

    ✅ Optimal line length: ~46 chars/line (ideal 45–75 CPL).

    ⚠️ Hard to read: Flesch score 34/100. Simplify sentences for wider reach.

    ⚠️ Partial contrast: 10 elements below WCAG AA threshold (min 1.1:1).

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

    Flesch 35

    Color Palette

    11 unique colors
    Light
    #ffffff
    Background· 21.1%
    #893171
    Secondary· 22.299999999999997%
    #a8296d
    Accent· 18.8%
    #00549d
    Primary· 12.3%
    #d9af5d
    Accent· 7.7%
    #ebf0db
    Secondary· 5%
    #af886f
    Secondary· 4.4%
    #351b33
    Primary· 4.2%

    Business & Marketing Stack

    2 Tools Detected

    Growing

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    2

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    13 Resources

    10
    Scripts
    3
    Styles
    8
    Async
    0
    Defer

    Top Script Sources

    static.rheinwerk-verlag.de(8)googletagmanager.com(1)local(1)

    Website Identity

    rheinwerk-verlag.de

    service@rheinwerk-verlag.de
    Location detected: 🇩🇪 Germanyvia tld
    de

    Sponsored

    Last analyzed: 29 Apr 2026 at 12:45

    Historical Analysis & Change Tracking