boesendorfer.com

https://boesendorfer.com· First analyzed 11 May 2026· Updated 11 May 2026

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boesendorfer.com

Mobile

Sponsored

Hosting Provider

netcup GmbH

IP Address

89.58.46.163

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Nuremberg, Germany

ASN

AS197540

Organization

netcup GmbH

Server

Apache

Nameservers

ns1.anydns.cloud.dns.tsadns.eu.dns.t-systems.at.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.2 s10%

Speed Index

1.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

18.3 MB

32 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

Infrastructure

Hosting

netcup GmbH

Technology Stack

7 Technologies Detected

CSS Frameworks

Analytics

Libraries

Web Servers

Security

SEO Analysis

C66/100

Meta Tags5/15

Content12/12

Headings1/8

Technical24/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social5/5

Freshness0/4

Mobile4/4

Indexability3/3

boesendorfer.comboesendorfer.com

Home - Bösendorfer

The Art of the Piano since 1828 | Wiener Klavierbaukunst seit 1828

Title Length18 chars

Recommended: 50-60 chars (~114px / 580px)

Description Length66 chars

Recommended: 120-160 chars

Issues (1)

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

8 issues found

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Crawlability

Sitemap

Type: standard

213 URLs

robots.txt

2 rules

Local SEO

Local Search Readiness

20/100

Needs Work

6 11 1

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AI & LLM Readiness

D46/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

3/25

Citation

13/25

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:10%

Words:998

Token eff.:Optimal

Sections/1K:21

Depth:1/5

Structured Data

2 JSON-LD

WebSiteBreadcrumbList

Citation Readiness

Opening Summary171w

Descriptive Headingsavg 3.8w

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

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.

57/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

11/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

5/15

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

9/15

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

ARIA & Roles

2/15

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

5 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.

33/100

1.89 g

CO₂e / view

18.2 MB

Page Weight

Cleaner Than

New Visitor

2.16 g

Returning (cached)

1.08 g

Annual (10K/mo)

226.5 kg

Emission Segments

Data Center

92 mg

Network

555 mg

Device

1.24 g

Resource Breakdown

JavaScript

93.3 KB

Images

17.0 MB

CSS

1.2 MB

HTML

10.3 KB

Green Hosting Verified

netcup GmbH

GWF Verified

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

56%Poor

Interactive

HTTPS

No WAF

78d

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/1.1

Valid From

29.04.2026

Valid Until

28.07.2026

Subject Alternative Names (2)

boesendorfer.comwww.boesendorfer.com

SHA-256 Fingerprint

96:61:E3:EF:D1:E8:03:5A:11:76:A0:55:AF:38:B3:F2:9D:7D:E8:F4...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

10282

content-type

text/html; charset=UTF-8

date

Mon, 11 May 2026 03:42:42 GMT

expect-ct

enforce, max-age=21600

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (4)

mx03.hornetsecurity.com

mx01.hornetsecurity.com

mx02.hornetsecurity.com

mx04.hornetsecurity.com

Domain Information

boesendorfer.com

Domain Age

28y 10m

Created

07.07.1997

Expires

06.07.2026

Last Updated

24.07.2025

Registrar

Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

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.

61/100

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

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Brandon Grotesque

WCAG Partial

58/100

Readability

/30

22/30

18px · LH 1.33

Hierarchy

/20

6/20

WCAG

/25

17/25

1:1 min contrast

Performance

/25

13/25

1 font · 6 req

Heading Font

Brandon Grotesque

Sans

Body Font

Brandon Grotesque

Sans18px

Contrast Ratio

1:1

6 issues

Reading Comfort

~34 CPL

Narrow lines

40px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

⚠️ Hard to read: Flesch score 40/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 6 elements below WCAG AA threshold (min 1.0:1).

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

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFontsFlesch 41

Color Palette

8 unique colors

12.86:1 AAA Dark

#343133

Other· 26.1%

#ffffff

Text· 10.6%

#0a0c10

Primary· 37.39999999999999%

#beb5aa

Secondary· 6.2%

#1b1c23

Secondary· 5.8%

#f1ebe1

Secondary· 1.9%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

boesendorfer.com(5)

Website Identity

Home

www.boesendorfer.com/en

28 years old

Location detected: 🇩🇪 Germanyvia ip

Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USAen

Social Profiles

Facebook Instagram YouTube

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Last analyzed: 11 May 2026 at 03:43

Historical Analysis & Change Tracking