libri.de

https://libri.de· First analyzed 09 May 2026· Updated 09 May 2026

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libri.de

Mobile

Sponsored

Hosting Provider

PlusServer GmbH

IP Address

188.64.195.32

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Cologne, Germany

ASN

AS61157

Organization

PlusServer GmbH

Server

Apache

Nameservers

b.sec-ns.de.a.prim-ns.de.c.sec-ns.de.a.sec-ns.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.3 s10%

Speed Index

3.0 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.2 MB

54 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

CMS

WordPress

Infrastructure

Hosting

PlusServer GmbH

Technology Stack

15 Technologies Detected

Plugins

Rate My Post

Ninja Forms Uploads

Borlabs Cookie Betterlinks Download Monitor

Analytics

Libraries

CSS Frameworks

Icon Libraries

Web Servers

Security

SEO Analysis

B73/100

Meta Tags9/15

Content3/12

Headings8/8

Technical25/25

E-E-A-T2/7

Images5/7

Links4/5

URL5/5

Social4/5

Freshness2/4

Mobile3/4

Indexability3/3

libri.delibri.de

Startseite | Libri GmbH

Libri ihr Partner im Buchgroßhandel für den Buchhandel seit mehr als 90 Jahren: Für die Zukunft des Buches mit Leidenschaft.

Title Length23 chars

Recommended: 50-60 chars (~139px / 580px)

Description Length124 chars

Recommended: 120-160 chars

Issues (1)

• Very thin content (4 words). Search engines need substantial content for ranking.

5 issues found

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Crawlability

Sitemap

Type: index

9 URLs

9 sub-sitemaps

robots.txt

7 rules

Sitemap reference found

Local SEO

Local Search Readiness

27/100

Needs Work

7 11

Sponsored

AI & LLM Readiness

F37/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

8/25

Citation

2/25

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:636

Token eff.:Optimal

Structured Data

4 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

sameAs entity links

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

AI readiness recommendation preview...

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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.

80/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

17/20

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

7/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

2 recommendations

•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.

54/100

155 mg

CO₂e / view

1.2 MB

Page Weight

70%

Cleaner Than

New Visitor

178 mg

Returning (cached)

89 mg

Annual (10K/mo)

18.6 kg

Emission Segments

Data Center

35 mg

Network

37 mg

Device

83 mg

Resource Breakdown

JavaScript

154.8 KB

Images

927.4 KB

CSS

122.1 KB

Fonts

3.2 KB

HTML

48.1 KB

Green Hosting Not Verified

PlusServer GmbH

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

148d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

02.09.2025

Valid Until

04.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.libri.delibri.de

SHA-256 Fingerprint

DC:A2:DB:C5:14:4E:EA:67:39:53:74:BF:09:4E:7F:D4:D9:2F:99:E5...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-length

48985

content-type

text/html; charset=UTF-8

date

Sat, 09 May 2026 07:41:30 GMT

last-modified

Sat, 09 May 2026 07:00:46 GMT

server

Apache/2.4.58 (Ubuntu)

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

libri-de.mail.protection.outlook.com

Domain Information

libri.de

Last Updated

01.02.2018

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

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.

81/100

Mobile Friendly91 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=1.0

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Lato

WCAG AAA

72/100

Readability

/30

15/30

14px · LH 1.20

Hierarchy

/20

19/20

3.86x ratio · ✓ H1→H6

WCAG

/25

20/25

11.43:1 min contrast

Performance

/25

18/25

1 font · 5 req

Heading Font

Lato

Sans54px

Body Font

Lato

Sans14px

Contrast Ratio

11.43:1

WCAG AAA (≥7:1)

Reading Comfort

~35 CPL

Narrow lines

54px

48px

28px

14px

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

⚠️ Tight line spacing (1.20). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 24/100. Consider shorter sentences and simpler words.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 11.4:1).

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

✅ Strong hierarchy: Headlines are 3.9x larger than body text.

Buy on MyFontsFlesch 24

Color Palette

6 unique colors

12.63:1 AAA Dark

#333333

Other· 34.6%

#ffffff

Background· 23.6%

#070a19

Primary· 23.2%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

14 Resources

Scripts

Styles

Async

Defer

Top Script Sources

libri.de(12)

Website Identity

Libri

Organization

Libri ihr Partner im Buchgroßhandel für den Buchhandel seit mehr als 90 Jahren: Für die Zukunft des Buches mit Leidenschaft.

www.libri.de/fr/

Location detected: 🇩🇪 Germanyvia tld

📧 Microsoft 365de-DE

Social Profiles

Facebook Instagram LinkedIn

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Last analyzed: 09 May 2026 at 07:41

Historical Analysis & Change Tracking