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studibuch.de

https://studibuch.de· First analyzed 01 Jun 2026· Updated 01 Jun 2026
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studibuch.de
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Hosting Provider

Team blue-Raidboxes

IP Address

185.175.196.56

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS34762

Server

Nginx

CDN

Cloudflare

WAF

Cloudflare

Nameservers

leonard.ns.cloudflare.com.hera.ns.cloudflare.com.

Performance

97

Core Web Vitals

Weight

First Contentful Paint
982 ms10%
Speed Index
1.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.4 MB
149 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv6.9.4
cms
The7v14.3.4Custom
by Dream-Theme
View Theme

Technology Stack

16 Technologies Detected

Plugins

7
HoneypotShow Hidecollapse ExpandJs_ComposerDt The7 CoreUltimate_Vc_Addons
Duracelltomi Google Tag Manager
Klaviyo

Libraries

1
jQueryv3.7.1

UI Components

1
Slick Carousel

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Analytics

1
Google Analytics

Tag Managers

1
Google Tag Manager

Email Marketing

1
Klaviyo

Web Servers

1
Nginx

SEO Analysis

A+92/100
29
3
0
Meta Tags14/15
Content10/12
Headings8/8
Technical24/25
E-E-A-T7/7
Images7/7
Links2/5
URL5/5
Social5/5
Freshness4/4
Mobile3/4
Indexability3/3
S
studibuch.destudibuch.de

Studibuch - Deine Nr.1 für gebrauchte Fachbücher

Bei Studibuch kannst Du ganz einfach gebrauchte Fachbücher kaufen und verkaufen. Nachhaltig Bücher kaufen leicht gemacht.

Title Length48 chars

Recommended: 50-60 chars (~288px / 580px)

Description Length121 chars

Recommended: 120-160 chars

Issues (0)

    3 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    3 URLs

    3 sub-sitemaps

    robots.txt

    9 rules

    Local SEO

    Local Search Readiness

    11/100
    Poor
    3 14 1

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

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    AI & LLM Readiness

    D58/100
    Bot Access
    20/25
    Machine Read.
    8/25
    Schema Data
    13/25
    Citation
    17/25

    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:6%
    Words:2,118
    Token eff.:Optimal
    Depth:1/5

    Structured Data

    6 JSON-LD
    Article×1.2Person×1.3Organization×1.1WebSiteSearchAction
    sameAs entity links

    Citation Readiness

    Opening Summary477w
    Descriptive Headingsavg 6.1w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (7)
    AI readiness recommendation preview...
    Upgrade to view recommendations

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    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
    3
    Critical
    0
    Warnings
    Images & Alt Text
    13/20
    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
    11/15
    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.
    71/100
    B
    143 mg
    CO₂e / view
    1.4 MB
    Page Weight
    60%
    Cleaner Than
    New Visitor
    164 mg
    vs
    Returning (cached)
    82 mg
    Annual (10K/mo)
    17.2 kg
    Emission Segments
    Data Center
    7 mg
    Network
    42 mg
    Device
    94 mg
    Resource Breakdown
    JavaScript
    230.8 KB
    Images
    114.1 KB
    CSS
    384.1 KB
    Fonts
    632.9 KB
    HTML
    54.2 KB
    Green Hosting Verified
    Cloudflare
    GWF Verified
    4 recommendations
    • •Carbon footprint recommendation preview...
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    D

    Security Score

    46%Poor
    Interactive

    HTTPS

    No WAF

    35d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    RSA (4096 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    08.04.2026

    Valid Until

    07.07.2026

    Subject Alternative Names (2)

    b3zemk-studibuchde.site.rb-hosting.iostudibuch.de

    SHA-256 Fingerprint

    A6:05:76:3D:28:34:2A:66:4B:E1:7C:77:D5:57:64:B5:4F:D4:5E:D3...

    Top Recommendations

    Security recommendation preview

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    Upgrade to view header details

    HTTP Headers

    Developer Console

    age
    0
    cache-control
    🔴 No Cache(no-store, no-cache, must-revalidate)
    content-encoding
    ⚡ Brotli(br)
    content-type
    text/html; charset=UTF-8
    date
    Mon, 01 Jun 2026 22:00:53 GMT
    expires
    Thu, 19 Nov 1981 08:52:00 GMT
    Good Warning Issue

    Email Infrastructure

    Microsoft 365

    Score

    73

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (1)

    studibuch-de.mail.protection.outlook.com

    Domain Information

    studibuch.de

    Last Updated

    07.03.2023

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Usercentrics

    Cookie Consent Banner
    Usercentrics
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: Usercentrics
    Privacy policy page linked
    Data Protection Officer 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.
    B
    75/100
    Mobile Friendly86 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, maximum-scale=1, user-scalable=0
    2 recommendations
    • •Mobile compatibility recommendation preview...
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    Typography & Readability

    Manrope Regular

    WCAG Partial
    70/100
    Readability
    /30
    21/30

    18px · LH 1.50

    Hierarchy
    /20
    16/20

    2x ratio · ✓ H1→H6

    WCAG
    /25
    17/25

    1.92:1 min contrast

    Performance
    /25
    16/25

    1 font · 13 req

    Heading Font

    Manrope Regular

    Sans36px

    Body Font

    Manrope Regular

    Sans18px

    Contrast Ratio

    1.92:1

    12 issues

    Reading Comfort

    ~36 CPL

    Narrow lines
    36px
    h1
    27px
    h2
    18px
    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).

    ❌ Very complex text: Flesch score 29/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 12 elements below WCAG AA threshold (min 1.9:1).

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

    ✅ Strong hierarchy: Headlines are 2.0x larger than body text.

    GGoogle FontsBuy on MyFontsFlesch 29

    Color Palette

    13 unique colors
    3.35:1 AA Large Light
    #d3d4cf
    Other· 19.2%
    #6b716d
    Other· 6.8%
    #95c11e
    Primary· 0%
    #f6ffcd
    Accent· 15.4%
    #9fb95d
    Secondary· 9.4%
    #564e40
    Secondary· 7.9%
    #c9c6b6
    Secondary· 6.5%
    #202117
    Secondary· 5.3%

    Business & Marketing Stack

    3 Tools Detected

    Advanced

    Marketing Automation

    1
    KlaviyoE-commerce

    Email marketing and automation platforms

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    2

    Categories

    3

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Sponsored

    Scripts & Styles

    30 Resources

    20
    Scripts
    10
    Styles
    12
    Async
    0
    Defer

    Top Script Sources

    studibuch.de(8)static.klaviyo.com(6)static-tracking.klaviyo.com(3)app.usercentrics.eu(1)googletagmanager.com(1)

    Website Identity

    Studibuch GmbH

    Studibuch GmbH

    BookStore

    Bei Studibuch kannst Du ganz einfach gebrauchte Fachbücher kaufen und verkaufen. Nachhaltig Bücher kaufen leicht gemacht.

    Location detected: 🇩🇪 Germanyvia tld
    📧 Microsoft 365de

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    Last analyzed: 01 Jun 2026 at 22:01

    Historical Analysis & Change Tracking