ceskafilharmonie.cz

https://ceskafilharmonie.cz· First analyzed 24 May 2026· Updated 24 May 2026

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ceskafilharmonie.cz

Mobile

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Hosting Provider

Ignum s.r.o.

IP Address

62.109.134.29

Site Location

🇨🇿 Praha 1, Czech Republicvia schema_nap

Server Location

🇨🇿 Prague, Czechia

ASN

AS29134

Organization

Ignum s.r.o.

Server

Nginx

Nameservers

ns.grdns.it.ns.grdns.cz.

Performance

Core Web Vitals

Weight

First Contentful Paint

896 ms10%

Speed Index

1.2 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

439 KB

48 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Umbraco

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

8 Technologies Detected

Analytics

Frameworks

Libraries

UI Components

CSS Frameworks

Tag Managers

Web Servers

SEO Analysis

A86/100

Meta Tags15/15

Content12/12

Headings3/8

Technical25/25

E-E-A-T2/7

Images5/7

Links5/5

URL5/5

Social5/5

Freshness2/4

Mobile4/4

Indexability3/3

ceskafilharmonie.czceskafilharmonie.cz

Česká filharmonie‿130. sezona | Česká filharmonie

Milujete klasickou hudbu? • Vyberte si z koncertní nabídky České filharmonie • Seznamte se s dirigenty a hráči • Projděte se historií orchestru

Title Length51 chars

Recommended: 50-60 chars (~302px / 580px)

Description Length143 chars

Recommended: 120-160 chars

Issues (1)

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

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

5 URLs

5 sub-sitemaps

robots.txt

7 rules

Sitemap reference found

Local SEO

Local Search Readiness

22/100

Needs Work

5 15

Sponsored

AI & LLM Readiness

D52/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

3/25

Citation

19/25

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

blockquotesnav

Text ratio:7%

Words:1,186

Token eff.:Optimal

Sections/1K:38.8

Depth:2/5

Structured Data

1 JSON-LD

Organization×1.1

sameAs entity links

Citation Readiness

Opening Summary20w

Descriptive Headingsavg 14.7w

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (5)

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.

78/100

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

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

9/15

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.

3 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.

60/100

54 mg

CO₂e / view

438.9 KB

Page Weight

90%

Cleaner Than

New Visitor

62 mg

Returning (cached)

31 mg

Annual (10K/mo)

6.5 kg

Emission Segments

Data Center

12 mg

Network

13 mg

Device

29 mg

Resource Breakdown

JavaScript

252.7 KB

CSS

127.0 KB

HTML

24.9 KB

Other

34.3 KB

Green Hosting Not Verified

Ignum s.r.o.

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

153d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Alpiro s.r.o.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

09.04.2026

Valid Until

24.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (4)

ceskafilharmonie.cz*.ceskafilharmonie.cz*.cfmail.cz*.rudolfinum.org

SHA-256 Fingerprint

A5:C2:8C:53:50:47:3E:41:AC:0B:2E:50:5F:44:C0:16:90:16:D3:1D...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Sun, 24 May 2026 01:43:25 GMT

server

nginx/1.18.0 (Ubuntu)

set-cookie

.AspNetCore.Mvc.CookieTempDataProvider

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

ceskafilharmonie-cz.mail.protection.outlook.com

Domain Information

ceskafilharmonie.cz

Domain Age

25 years

Created

04.05.2001

Expires

03.05.2027

Last Updated

15.02.2017

Registrar

REG-INTERNET-CZ

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

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.

72/100

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

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Greed Standard

WCAG Partial

58/100

Readability

/30

22/30

16px · LH 1.50

Hierarchy

/20

7/20

WCAG

/25

16/25

1:1 min contrast

Performance

/25

13/25

1 font · 6 req

Heading Font

Greed Standard

Sans

Body Font

Greed Standard

Sans16px

Contrast Ratio

1:1

11 issues

Reading Comfort

~35 CPL

Narrow lines

48px

28px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 18/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 11 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 18

Color Palette

11 unique colors

Light

#ffffff

Background· 46.4%

#c71ba3

Accent· 16.1%

#012f6c

Primary· 9.7%

#1d65ed

Accent· 8%

#0776f7

Accent· 6%

#e91f84

Accent· 4%

#ef5566

Accent· 3.3%

#023fc0

Accent· 1.6%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

17 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(5)local(3)c.seznam.cz(1)

Website Identity

Česká filharmonie

Organization

Česká filharmonie je nejvýznamnější český symfonický orchestr s bohatou historií sahající do roku 1896. Koncertuje v Rudolfinu a je známá po celém světě.

www.ceskafilharmonie.cz

25 years old

Alšovo nábřeží 79/12, Praha 1

110 00, Praha 1

Location detected: 🇨🇿 Czech Republic, Praha 1via schema_nap

REG-INTERNET-CZ📧 Microsoft 365cs-CZEst. 1896

Social Profiles

Facebook X (Twitter)Instagram YouTube

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Last analyzed: 24 May 2026 at 01:43

Historical Analysis & Change Tracking