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vaclavhavel.cz

https://vaclavhavel.cz· First analyzed 20 May 2026· Updated 20 May 2026
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vaclavhavel.cz
Desktop screenshot of vaclavhavel.cz
Mobile screenshot of vaclavhavel.cz
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Hosting Provider

THINline s.r.o

IP Address

91.239.201.14

Site Location

🇨🇿 Czech Republicvia tld

Server Location

🇨🇿 Prague, Czechia

ASN

AS60606

Organization

THINline s.r.o

Server

Nginx

Nameservers

ns1.thinline.cz.ns3.cesky-hosting.eu.ns2.thinline.cz.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
535 ms10%
Speed Index
696 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.7 MB
114 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
THINline s.r.o

Technology Stack

7 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Facebook Pixel

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginxv1.22.1

Languages

1
PHPv7.0.33

SEO Analysis

C62/100
18
6
1
Meta Tags9/15
Content11/12
Headings3/8
Technical13/25
E-E-A-T0/7
Images6/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
V
vaclavhavel.czvaclavhavel.cz

Knihovna Václava Havla

Knihovna Václava Havla slouží jako dokumentační a vědecké centrum zabývající se moderními českými dějinami s důrazem na propagaci myšlenek Václava Havla.

Title Length22 chars

Recommended: 50-60 chars (~129px / 580px)

Description Length153 chars

Recommended: 120-160 chars

Issues (1)

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

7 issues found

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Crawlability

Sitemap
robots.txt

2 rules

Allows all crawlers

Local SEO

Local Search Readiness

5/100
Poor
2 13 2

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

F38/100
Bot Access
20/25
Machine Read.
4/25
Schema Data
0/25
Citation
14/25

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:19%
Words:6,613
Token eff.:Excessive
Sections/1K:2
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary95w
Descriptive Headingsavg 5.6w
Canonical URL
Open Graph3/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
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.
C
61/100
8
Passed
5
Critical
3
Warnings
Images & Alt Text
15/20
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
8/15
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
1/15
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.
27/100
E
345 mg
CO₂e / view
2.7 MB
Page Weight
30%
Cleaner Than
New Visitor
394 mg
vs
Returning (cached)
197 mg
Annual (10K/mo)
41.3 kg
Emission Segments
Data Center
77 mg
Network
83 mg
Device
185 mg
Resource Breakdown
JavaScript
187.8 KB
Images
2.4 MB
CSS
70.4 KB
HTML
64.7 KB
Green Hosting Not Verified
THINline s.r.o
7 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

0%Critical
Critical / Transactional

HTTPS

No WAF

59d

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

20.04.2026

Valid Until

19.07.2026

Subject Alternative Names (2)

vaclavhavel.czwww.vaclavhavel.cz

SHA-256 Fingerprint

6F:35:95:0D:3C:86:66:20:1E:E3:C1:53:28:4F:64:12:34:09:05:9F...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-store, no-cache, must-revalidate)
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=UTF-8
date
Wed, 20 May 2026 22:01:16 GMT
expires
Thu, 19 Nov 1981 08:52:00 GMT
pragma
no-cache
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

95

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

vaclavhavel-cz.mail.protection.outlook.com

Domain Information

vaclavhavel.cz

Domain Age
25 years

Created

03.05.2001

Expires

02.05.2027

Last Updated

23.04.2026

Registrar

REG-THINLINE

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

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.
C
66/100
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

Typography & Readability

roboto

WCAG Partial
69/100
Readability
/30
23/30

16px · LH 1.40

Hierarchy
/20
8/20
WCAG
/25
17/25

2.15:1 min contrast

Performance
/25
21/25

System fonts

Heading Font

roboto

Sans

Body Font

roboto

Sans16px

Contrast Ratio

2.15:1

24 issues

Reading Comfort

~37 CPL

Narrow lines
32px
h2
26px
h3
21px
h4
16px
p

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

✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 35/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 24 elements below WCAG AA threshold (min 2.1:1).

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

✅ System fonts: Zero font loading delay — best possible LCP impact.

Flesch 35

Color Palette

13 unique colors
8.95:1 AAA Dark
#131313
Text· 18.9%
#b5b4b0
Other· 9.1%
#fbf9f5
Primary· 8%
#ae8471
Secondary· 5.9%
#a23132
Accent· 4.3%
#7e9ea1
Secondary· 4.3%
#dac0a4
Secondary· 1.6%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

Advertising

1
Facebook PixelMid-Market

Ad platforms and retargeting pixels

2

Categories

3

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Well-developed marketing technology stack

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Scripts & Styles

8 Resources

6
Scripts
2
Styles
4
Async
0
Defer

Top Script Sources

connect.facebook.net(2)googletagmanager.com(2)local(2)

Website Identity

vaclavhavel.cz

archiv@vaclavhavel-library.org
25 years old
Location detected: 🇨🇿 Czech Republicvia tld
REG-THINLINE📧 Microsoft 365cs

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Last analyzed: 20 May 2026 at 22:01

Historical Analysis & Change Tracking