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nkp.cz

https://nkp.cz· First analyzed 28 Apr 2026· Updated 28 Apr 2026
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nkp.cz
Desktop screenshot of nkp.cz
Mobile screenshot of nkp.cz
Mobile

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Hosting Provider

IP Address

217.16.182.171

Site Location

🇨🇿 Czech Republicvia phone

Server Location

🇨🇿 Prague, Czechia

ASN

AS43541

Organization

NETHOST s.r.o

Nameservers

nsa.ces.net.ns1.nkp.cz.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
919 ms10%
Speed Index
1.2 s10%
Largest Contentful Paint
25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1019 KB
77 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
NETHOST s.r.o

Technology Stack

7 Technologies Detected

Libraries

1

CSS Frameworks

1

Icon Libraries

1

Tag Managers

1

SEO Analysis

B76/100
23
5
1
Meta Tags7/15
Content11/12
Headings8/8
Technical20/25
E-E-A-T5/7
Images4/7
Links5/5
URL5/5
Social2/5
Freshness2/4
Mobile4/4
Indexability3/3
N
nkp.cznkp.cz

Národní knihovna České republiky

No description available for this page.

Title Length32 chars

Recommended: 50-60 chars (~191px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

  • Missing meta description — important for click-through rates in SERPs

Crawlability

Sitemap

Type: standard

953 URLs

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

25/100
Needs Work
7 13

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AI & LLM Readiness

D48/100
Bot Access
20/25
Machine Read.
13/25
Schema Data
1/25
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
navheader/footer
Text ratio:6%
Words:764
Token eff.:Optimal
Sections/1K:30.1
Depth:2/5

Structured Data

1 JSON-LD
Organization×1.1(min)

Citation Readiness

Opening Summary92w
Descriptive Headingsavg 4.5w
Canonical URL
Open Graph0/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
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.
A
84/100
14
Passed
1
Critical
2
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
18/20
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
13/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
3/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
1 recommendation
  • Accessibility recommendation preview...

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.
49/100
B
126 mg
CO₂e / view
1018.8 KB
Page Weight
70%
Cleaner Than
New Visitor
144 mg
vs
Returning (cached)
72 mg
Annual (10K/mo)
15.1 kg
Emission Segments
Data Center
28 mg
Network
30 mg
Device
68 mg
Resource Breakdown
JavaScript
155.9 KB
Images
205.3 KB
CSS
639.7 KB
Fonts
4.6 KB
HTML
13.3 KB
Green Hosting Not Verified
NETHOST s.r.o
5 recommendations
  • Carbon footprint recommendation preview...
D

Security Score

46%Poor
Interactive

HTTPS

No WAF

48d

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

18.03.2026

Valid Until

16.06.2026

Subject Alternative Names (2)

nkp.czwww.nkp.cz

SHA-256 Fingerprint

B5:46:12:FA:37:B0:C9:6C:D0:25:1C:20:78:F2:88:A3:F7:64:E2:C9...

Top Recommendations

Security recommendation preview

HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-store, no-cache, must-revalidate)
content-encoding
📦 Gzip(gzip)
content-length
13299
content-type
text/html; charset=UTF-8
date
Tue, 28 Apr 2026 04:28:55 GMT
expires
Thu, 19 Nov 1981 08:52:00 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

98

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

fm2.nkp.cz

Domain Information

nkp.cz

Domain Age
31y 6m

Created

03.11.1994

Expires

19.10.2026

Last Updated

22.08.2024

Registrar

REG-ACTIVE24

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

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.
B
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=1.0, user-scalable=yes
1 recommendation
  • Mobile compatibility recommendation preview...

Typography & Readability

Roboto

WCAG Partial
68/100
Readability
/30
18/30

15px · LH 1.20

Hierarchy
/20
15/20

2.67x ratio

WCAG
/25
17/25

1:1 min contrast

Performance
/25
18/25

1 font · 4 req

Heading Font

Roboto

Sans40px

Body Font

Roboto

Sans15px

Contrast Ratio

1:1

1 issue

Reading Comfort

~38 CPL

Narrow lines
40px
h1
28px
h2
20px
h3
15px
p

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

⚠️ Tight line spacing (1.20). Increase to 1.4–1.6 for better readability.

⚠️ Hard to read: Flesch score 36/100. Simplify sentences for wider reach.

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

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 2.7x larger than body text.

GGoogle FontsFluid Type (rem)Flesch 36

Color Palette

9 unique colors
2.06:1 Fail Light
#ffffff
Background· 22.700000000000003%
#b3b5b6
Other· 18.6%
#16789b
Primary· 22.1%
#f1c764
Accent· 10.3%
#6d838a
Secondary· 9.9%
#435157
Secondary· 6.1%
#a99b7d
Secondary· 5.4%
#cdb578
Secondary· 0.8%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

16 Resources

11
Scripts
5
Styles
4
Async
2
Defer

Top Script Sources

googletagmanager.com(3)mccdn.me(2)d70shl7vidtft.cloudfront.net(1)local(1)kookiecheck.cz(1)

Website Identity

Národní knihovna České republiky

Organization

Mariánské náměstí 190, Praha 1

110 00, Praha 1

Location detected: 🇨🇿 Czech Republicvia phone
REG-ACTIVE24cs

Social Profiles

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Last analyzed: 28 Apr 2026 at 04:29

Historical Analysis & Change Tracking