esrs.eu

https://esrs.eu· First analyzed 21 May 2026· Updated 21 May 2026

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esrs.eu

Mobile

Sponsored

Hosting Provider

Mittwald CM Service GmbH und Co.

IP Address

37.202.0.30

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Espelkamp, Germany

ASN

AS15817

Organization

Mittwald CM Service GmbH und Co.

Server

Apache

Nameservers

ns01.agenturserver.co.ns01.agenturserver.de.ns01.agenturserver.it.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.4 s10%

Speed Index

1.9 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

4 MB

236 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.8.5

cms

Kadencev1.4.1

by Kadence WP

View Theme

Technology Stack

45 Technologies Detected

Analytics

Libraries

Other

CSS Frameworks

Frameworks

Other

UI Components

Icon Libraries

Fonts

Tag Managers

Web Servers

Security

SEO Analysis

B79/100

Meta Tags12/15

Content8/12

Headings5/8

Technical24/25

E-E-A-T5/7

Images3/7

Links2/5

URL5/5

Social5/5

Freshness4/4

Mobile3/4

Indexability3/3

esrs.euesrs.eu

ESRS Home | European Sleep Research Society

The ESRS (European Sleep Research Society) is an international scientific non-profit organization that promotes Sleep Research and Sleep Medicine, aims to im...

Description truncated.

Title Length43 chars

Recommended: 50-60 chars (~262px / 580px)

Description Length249 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (32/43) — critical for accessibility and SEO

9 issues found

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Crawlability

Sitemap

Type: index

19 URLs

19 sub-sitemaps

robots.txt

279 rules

Sitemap reference found

Local SEO

Local Search Readiness

19/100

Poor

5 12

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

D48/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

7/25

Citation

11/25

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:3%

Words:2,270

Token eff.:Optimal

Depth:1/5

Structured Data

5 JSON-LD

Organization×1.1WebSiteVideoObjectSearchAction

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (8)

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

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

14/15

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

7/15

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

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.

37/100

412 mg

CO₂e / view

4.0 MB

Page Weight

15%

Cleaner Than

New Visitor

471 mg

Returning (cached)

236 mg

Annual (10K/mo)

49.5 kg

Emission Segments

Data Center

20 mg

Network

121 mg

Device

271 mg

Resource Breakdown

JavaScript

723.2 KB

Images

1.4 MB

CSS

1.8 MB

Fonts

2.2 KB

HTML

65.8 KB

Other

1.4 KB

Green Hosting Verified

Mittwald CM Service GmbH & Co. KG

GWF Verified

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

84d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

15.05.2026

Valid Until

13.08.2026

Subject Alternative Names (1)

esrs.eu

SHA-256 Fingerprint

80:0C:B0:85:C0:D2:1E:F8:5E:F3:F7:73:3E:C6:16:20:CE:E0:6A:50...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 0s(max-age=0)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Thu, 21 May 2026 03:47:30 GMT

expires

Thu, 21 May 2026 03:47:30 GMT

link

<https://esrs.eu/wp-json/>; rel="https://api.w.org/", <https...

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (4)

mx2.agenturserver.de

mx3.agenturserver.de

mx4.agenturserver.de

mx1.agenturserver.de

Domain Information

esrs.eu

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Notice (WP)

Cookie Consent Banner

Cookie Notice (WP)

GDPR Indicators

Cookie consent banner detected

CMP: Cookie Notice (WP)

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.

79/100

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, minimum-scale=1

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Roboto

WCAG Partial

71/100

Readability

/30

19/30

14px · LH 1.60

Hierarchy

/20

19/20

2.14x ratio · ✓ H1→H6

WCAG

/25

15/25

1.57:1 min contrast

Performance

/25

18/25

1 font · 6 req

Heading Font

Roboto

Sans30px

Body Font

Roboto

Sans14px

Contrast Ratio

1.57:1

26 issues

Reading Comfort

~42 CPL

Narrow lines

30px

40px

24px

14px

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

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 30/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 26 elements below WCAG AA threshold (min 1.6:1).

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

✅ Strong hierarchy: Headlines are 2.1x larger than body text.

GGoogle FontsFluid Type (rem)Flesch 30

Color Palette

12 unique colors

15.7:1 AAA Dark

#232324

Text· 17.7%

#ffffff

Text· 12.9%

#308683

Secondary· 22.1%

#7c9db5

Secondary· 12.1%

#29667d

Accent· 7.9%

#1c3b6d

Primary· 7.1%

#142a4e

Accent· 6.7%

#ece3b5

Accent· 2.7%

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

HotjarMid-Market

User behavior and product analytics

Privacy & Cookies

GDPR Cookie ConsentFree

Cookie consent and privacy compliance tools

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

esrs.eu(12)googletagmanager.com(3)gstatic.com(2)google-analytics.com(1)api.mapbox.com(1)

Website Identity

European Sleep Research Society (ESRS)

Organization

The ESRS (European Sleep Research Society) is an international scientific non-profit organization that promotes Sleep Research and Sleep Medicine, aims to improve the care for patients with sleep disorders, and works as an sleep information network.

Location detected: 🇩🇪 Germanyvia ip

en-GB

Social Profiles

Facebook X (Twitter)Instagram LinkedIn

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Last analyzed: 21 May 2026 at 03:48

Historical Analysis & Change Tracking