lib4ri.ch

https://lib4ri.ch· First analyzed 21 May 2026· Updated 21 May 2026

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lib4ri.ch

Mobile

Sponsored

Hosting Provider

Eawag/Empa

IP Address

152.88.10.20

Site Location

🇨🇭 Switzerlandvia phone

Server Location

🇨🇭 Zurich, Switzerland

ASN

AS559

Organization

Eawag/Empa

Server

Nginx

Nameservers

dns4.emp-eaw.ch.dns3.emp-eaw.ch.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

530 ms10%

Speed Index

689 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

10.5 MB

23 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Technology Stack

3 Technologies Detected

CSS Frameworks

Tailwind CSS

Analytics

Matomo

Web Servers

Nginx

SEO Analysis

C65/100

Meta Tags4/15

Content11/12

Headings8/8

Technical18/25

E-E-A-T0/7

Images5/7

Links5/5

URL5/5

Social0/5

Freshness2/4

Mobile4/4

Indexability3/3

lib4ri.chlib4ri.ch

Home | Lib4RI

No description available for this page.

Title Length13 chars

Recommended: 50-60 chars (~76px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description — important for click-through rates in SERPs

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

604 URLs

robots.txt

43 rules

Sitemap reference found

Local SEO

Local Search Readiness

25/100

Needs Work

8 8 2

Sponsored

AI & LLM Readiness

D45/100

Bot Access

20/25

Machine Read.

11/25

Schema Data

0/25

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

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

navheader/footer

Text ratio:7%

Words:750

Token eff.:Optimal

Sections/1K:18.7

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary110w

Descriptive Headingsavg 3.1w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

AI readiness recommendation preview...

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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.

86/100

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

13/15

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.

29/100

1.33 g

CO₂e / view

10.5 MB

Page Weight

Cleaner Than

New Visitor

1.53 g

Returning (cached)

763 mg

Annual (10K/mo)

160.1 kg

Emission Segments

Data Center

298 mg

Network

320 mg

Device

716 mg

Resource Breakdown

JavaScript

99.0 KB

Images

18.1 KB

CSS

42.9 KB

HTML

13.3 KB

Other

10.4 MB

Green Hosting Not Verified

Eawag/Empa

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

56%Poor

Interactive

HTTPS

No WAF

74d

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/1.1

Valid From

06.05.2026

Valid Until

04.08.2026

Subject Alternative Names (2)

lib4ri.chwww.lib4ri.ch

SHA-256 Fingerprint

19:59:B0:3A:A4:78:0B:AA:BF:C8:02:49:C9:A7:D1:31:FA:74:01:4C...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(must-revalidate, no-cache, private)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-length

13345

content-type

text/html; charset=UTF-8

content-language

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

lib4ri-ch.mail.protection.outlook.com

Domain Information

lib4ri.ch

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Notice (WP)

Cookie Consent Banner

Cookie Notice (WP)

GDPR Indicators

Cookie consent banner detected

CMP: Cookie Notice (WP)

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.

64/100

Mobile Friendly1 breakpoint

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...

Upgrade to view recommendations

Typography & Readability

Arial

WCAG Partial

76/100

Readability

/30

22/30

21px · LH 1.71

Hierarchy

/20

15/20

1.05x ratio · ✓ H1→H6

WCAG

/25

19/25

1:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

Arial

Sans22px

Body Font

Arial

Sans21px

Contrast Ratio

1:1

1 issue

Reading Comfort

~43 CPL

Narrow lines

22px

30px

22px

21px

Minor Second

Scale

✅ Excellent readability: 21px body text is ideal for all devices.

⚠️ Hard to read: Flesch score 48/100. Simplify sentences for wider reach.

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

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

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

✅ System fonts: Zero font loading delay — best possible LCP impact.

Flesch 48

Color Palette

8 unique colors

Light

#f7f6f2

Primary· 36.20000000000001%

#80c798

Secondary· 15.5%

#3d8176

Secondary· 13%

#133f4c

Accent· 10.9%

#4ca088

Secondary· 9.6%

#72b18d

Secondary· 8.3%

#94b294

Secondary· 3.7%

#bad9c3

Secondary· 2.8%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

9 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)

Website Identity

lib4ri.ch

info@lib4ri.ch

+41 58 765 57 00

Location detected: 🇨🇭 Switzerlandvia phone

📧 Microsoft 365en

Social Profiles

LinkedIn Bluesky

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Last analyzed: 21 May 2026 at 18:55

Historical Analysis & Change Tracking