dtb-tennis.de

https://dtb-tennis.de· First analyzed 21 May 2026· Updated 21 May 2026

Export

dtb-tennis.de

Mobile

Sponsored

Hosting Provider

Burda Digital Systems GmbH

IP Address

193.26.101.11

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Höhenkirchen-Siegertsbrunn, Germany

ASN

AS39218

Organization

Burda Digital Systems GmbH

CDN

Fastly

Nameservers

ns4.markmonitor.com.ns5.markmonitor.com.ns1.markmonitor.com.ns7.markmonitor.com.+3 more

Performance

Core Web Vitals

Weight

First Contentful Paint

2.1 s10%

Speed Index

2.7 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

89 KB

62 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

Technology Stack

16 Technologies Detected

Advertising

Criteo Taboola Outbrain

Payments

CSS Frameworks

Frameworks

UI Components

Analytics

Tag Managers

Marketing

Social

Comments

Plugins

SEO Analysis

C64/100

Meta Tags9/15

Content10/12

Headings3/8

Technical18/25

E-E-A-T0/7

Images5/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile3/4

Indexability3/3

dtb-tennis.dedtb-tennis.de

DTB

Die offizielle Website des Deutschen Tennis Bundes. Hier gibt es aktuelle Informationen zu Nationalteams, Trainings, Mitgliederangeboten und mehr.

Title Length3 chars

Recommended: 50-60 chars (~18px / 580px)

Description Length146 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

4,563 URLs

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

6/100

Poor

2 13 2

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

Sponsored

AI & LLM Readiness

F30/100

Bot Access

20/25

Machine Read.

1/25

Schema Data

0/25

Citation

9/25

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:19%

Words:126,833

Token eff.:Excessive

Structured Data

Microdata

Citation Readiness

Opening Summary211w

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

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.

72/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

6/20

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

11/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

6/15

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

2 recommendations

•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.

51/100

A+

11 mg

CO₂e / view

89.0 KB

Page Weight

95%

Cleaner Than

New Visitor

13 mg

Returning (cached)

6 mg

Annual (10K/mo)

1.3 kg

Emission Segments

Data Center

3 mg

Network

3 mg

Device

6 mg

Resource Breakdown

JavaScript

54.9 KB

Images

11.2 KB

CSS

8.0 KB

HTML

12.8 KB

Other

2.1 KB

Green Hosting Not Verified

Burda Digital Systems GmbH

4 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

35%Critical

Critical / Transactional

HTTPS

No WAF

295d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

09.02.2026

Valid Until

12.03.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.tennis.detennis.de

SHA-256 Fingerprint

4F:07:CB:3A:11:D3:99:BA:B3:2B:4A:45:9D:01:09:82:60:1C:1E:E2...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

cache-control

🟡 200s(public, max-age=200, stale-while-revalidate=60, stale-if-err...)

content-encoding

📦 Gzip(gzip)

content-length

12779

content-type

text/html;charset=utf-8

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

MX Records (1)

dtbtennis-de0i.mail.protection.outlook.com

Domain Information

dtb-tennis.de

Last Updated

23.06.2021

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

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.

70/100

Mobile Friendly24 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

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

titleFont + defaultFont

WCAG Partial

58/100

Readability

/30

17/30

15px · LH 1.44

Hierarchy

/20

8/20

WCAG

/25

17/25

3.95:1 min contrast

Performance

/25

16/25

2 fonts

Heading Font

titleFont

Sans

Body Font

defaultFont

Sans15px

Contrast Ratio

3.95:1

4 issues

Reading Comfort

~35 CPL

Narrow lines

32px

15px

Minor Second

Scale

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.44 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 31/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 4.0:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Lean font stack: 2 font families keeps load times fast.

Buy on MyFontsFlesch 31

Color Palette

9 unique colors

2.41:1 Fail Light

#ffffff

Background· 59.99999999999999%

#a3a8a9

Other· 4.5%

#c9714d

Primary· 9.4%

#2d110f

Secondary· 5.5%

#4d393c

Secondary· 5.5%

#ac5234

Accent· 5.4%

#d1987e

Secondary· 0.8%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

27 Resources

Scripts

Styles

Async

Defer

Top Script Sources

widgets.tennis.de(12)consent.cookiebot.com(3)googletagmanager.com(1)local(1)ced.sascdn.com(1)

Website Identity

dtb-tennis.de

Location detected: 🇩🇪 Germanyvia tld

📧 Microsoft 365de

Social Profiles

Facebook X (Twitter)Instagram LinkedIn

Sponsored

Last analyzed: 21 May 2026 at 10:50

Historical Analysis & Change Tracking