concerti.de

https://concerti.de· First analyzed 14 May 2026· Updated 14 May 2026

Export

concerti.de

Mobile

Sponsored

Hosting Provider

Neue Medien Muennich GmbH

IP Address

85.13.155.220

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Neusalza-Spremberg, Germany

ASN

AS34788

Organization

Neue Medien Muennich GmbH

Server

Nginx

Nameservers

ns1038.ui-dns.de.ns1038.ui-dns.org.ns1038.ui-dns.biz.ns1038.ui-dns.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

561 ms10%

Speed Index

729 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.1 MB

71 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

CMS

WordPressv6.9.4

Infrastructure

Hosting

Neue Medien Muennich GmbH

Technology Stack

14 Technologies Detected

Plugins

Display A Meta Field As Block

WPML

Wp External Links Advanced Ads Borlabs Cookie Advanced Ads Pro

Analytics

CSS Frameworks

Advertising

Web Servers

SEO Analysis

B79/100

Meta Tags14/15

Content6/12

Headings3/8

Technical25/25

E-E-A-T2/7

Images4/7

Links5/5

URL5/5

Social4/5

Freshness4/4

Mobile4/4

Indexability3/3

concerti.deconcerti.de

concerti.de I Magazin für klassische Musik & Oper

concerti.de ist Deutschlands Klassik-Seite: Mit Interviews, News, Rezensionen und Kritiken sowie Termine von Künstlern der klassischen Musik & Oper.

Title Length49 chars

Recommended: 50-60 chars (~296px / 580px)

Description Length148 chars

Recommended: 120-160 chars

Issues (1)

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

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

51 URLs

51 sub-sitemaps

robots.txt

4 rules

Sitemap reference found

Local SEO

Local Search Readiness

22/100

Needs Work

6 12

Sponsored

AI & LLM Readiness

D47/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

8/25

Citation

12/25

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:3%

Words:2,067

Token eff.:Optimal

Structured Data

4 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

sameAs entity links

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph2/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

AI readiness recommendation preview...

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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.

81/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

13/20

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

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.

68/100

117 mg

CO₂e / view

1.1 MB

Page Weight

70%

Cleaner Than

New Visitor

133 mg

Returning (cached)

67 mg

Annual (10K/mo)

14.0 kg

Emission Segments

Data Center

6 mg

Network

34 mg

Device

77 mg

Resource Breakdown

JavaScript

502.6 KB

Images

391.8 KB

CSS

149.3 KB

HTML

83.6 KB

Other

26.2 KB

Green Hosting Verified

ALL-INKL.COM

GWF Verified

3 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

47d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

02.04.2026

Valid Until

01.07.2026

Subject Alternative Names (2)

concerti.dewww.concerti.de

SHA-256 Fingerprint

06:18:0C:8A:E8:BE:5B:72:81:B3:86:76:0C:1E:C3:95:58:B2:DA:54...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🔴 No Cache(max-age=0, no-cache, no-store, must-revalidate)

content-encoding

⚡ Brotli(br)

content-length

85313

content-type

text/html; charset=UTF-8

date

Thu, 14 May 2026 15:49:16 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mx00.ionos.de

mx01.ionos.de

Domain Information

concerti.de

Last Updated

17.09.2025

DNSSEC

Not Enabled

Privacy & Compliance

Borlabs Cookie

Cookie Consent Banner

Borlabs Cookie

GDPR Indicators

Cookie consent banner detected

CMP: Borlabs Cookie

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.

86/100

Mobile Friendly10 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

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Montserrat + Roboto

WCAG AA

59/100

Readability

/30

10/30

12px · LH 1.25

Hierarchy

/20

8/20

WCAG

/25

23/25

5.82:1 min contrast

Performance

/25

18/25

System fonts

Heading Font

Montserrat

Sans

Body Font

Roboto

Sans12px

Contrast Ratio

5.82:1

WCAG AA (≥4.5:1)

Reading Comfort

~39 CPL

Narrow lines

27px

25px

18px

12px

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Tight line spacing (1.25). Increase to 1.4–1.6 for better readability.

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

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.8:1).

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

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

Buy on MyFontsFluid Type (rem)Flesch 24

Color Palette

7 unique colors

12.63:1 AAA Dark

#333333

Text· 45.099999999999994%

#ffffff

Background· 18.799999999999997%

#100e0d

Secondary· 9.1%

#a60726

Primary· 4.6%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

Matomo (Piwik)Mid-Market

User behavior and product analytics

Sponsored

Scripts & Styles

26 Resources

Scripts

Styles

Async

Defer

Top Script Sources

concerti.de(10)securepubads.g.doubleclick.net(8)google-analytics.com(1)googletagmanager.com(1)

Website Identity

concerti Media GmbH

Organization

concerti.de ist Deutschlands Klassik-Seite: Mit Interviews, News, Rezensionen und Kritiken sowie Termine von Künstlern der klassischen Musik & Oper.

www.concerti.de/

Location detected: 🇩🇪 Germanyvia tld

de-DE

Social Profiles

Facebook

Sponsored

Last analyzed: 14 May 2026 at 15:49

Historical Analysis & Change Tracking