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martinus.cz

https://martinus.cz· First analyzed 15 May 2026· Updated 15 May 2026
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martinus.cz
Desktop screenshot of martinus.cz
Mobile screenshot of martinus.cz
Mobile

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Hosting Provider

Managed

IP Address

185.59.210.26

Site Location

🇨🇿 Czech Republicvia tld

Server Location

🇨🇿 Prague, Czechia

ASN

AS43541

Organization

Managed

Server

Nginx

Nameservers

ns2.nameserver.sk.ns1.dnsbackup.net.ns1.nameserver.sk.ns2.dnsbackup.net.

Performance

97

Core Web Vitals

Weight

First Contentful Paint
996 ms10%
Speed Index
1.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.8 MB
83 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
CMS
Ghost
Infrastructure
Hosting
Managed

Progressive Web App

Web ManifestTheme Color

Technology Stack

6 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

SEO Analysis

C66/100
18
8
1
Meta Tags14/15
Content10/12
Headings3/8
Technical15/25
E-E-A-T0/7
Images5/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile3/4
Indexability3/3
M
martinus.czmartinus.cz

Martinus.cz - Tisíce příběhů. Jedno knihkupectví. | Martinus.cz

Milujeme knihy stejně jako vy. Máme 324 891 titulů, skvělý zákaznický servis, doručení od 29 Kč, knihomolské soutěže a projekty.

Title Length63 chars

Recommended: 50-60 chars (~376px / 580px)

Description Length128 chars

Recommended: 120-160 chars

Issues (1)

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

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

1,168 URLs

1168 sub-sitemaps

robots.txt

85 rules

Sitemap reference found

Local SEO

Local Search Readiness

10/100
Poor
3 12 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F27/100
Bot Access
20/25
Machine Read.
0/25
Schema Data
0/25
Citation
7/25

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:5%
Words:5,733
Token eff.:Excessive

Structured Data

No Schema

Citation Readiness

Opening Summary185w
Descriptive Headings
Canonical URL
Open Graph3/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (12)
AI readiness recommendation preview...
Upgrade to view recommendations

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.
B
72/100
12
Passed
4
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
6/20
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
14/15
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
6/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
36/100
D
223 mg
CO₂e / view
1.8 MB
Page Weight
60%
Cleaner Than
New Visitor
255 mg
vs
Returning (cached)
128 mg
Annual (10K/mo)
26.8 kg
Emission Segments
Data Center
50 mg
Network
54 mg
Device
120 mg
Resource Breakdown
JavaScript
256.2 KB
Images
1.4 MB
CSS
59.5 KB
Fonts
55.8 KB
HTML
40.5 KB
Green Hosting Not Verified
Managed
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

56%Poor
Interactive

HTTPS

No WAF

154d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

01.04.2026

Valid Until

16.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.martinus.czmartinus.cz

SHA-256 Fingerprint

2E:69:56:D9:B7:DA:E9:FB:FC:6A:98:C9:05:99:84:2E:88:12:EF:06...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-store, no-cache, must-revalidate)
content-encoding
📦 Gzip(gzip)
content-length
41137
content-security-policy
base-uri 'self' https://optimize.google.com http://optimize....
content-type
text/html; charset=UTF-8
date
Fri, 15 May 2026 11:45:13 GMT
Good Warning Issue

Email Infrastructure

Google Workspace

Score

98

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

ALT3.ASPMX.L.GOOGLE.COM
ALT1.ASPMX.L.GOOGLE.COM
ALT4.ASPMX.L.GOOGLE.COM
ALT2.ASPMX.L.GOOGLE.COM

+1 more

Domain Information

martinus.cz

Domain Age
19y 8m

Created

22.09.2006

Expires

21.09.2026

Last Updated

12.12.2024

Registrar

REG-WEBGLOBE

DNSSEC
Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner
Cookiebot
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Cookiebot
Privacy policy page linked
Data Protection Officer mentioned
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.
B
77/100
Mobile Friendly57 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=1.0
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG Partial
69/100
Readability
/30
25/30

16px · LH 1.50

Hierarchy
/20
6/20
WCAG
/25
17/25

1.9:1 min contrast

Performance
/25
21/25

System fonts

Heading Font

-apple-system

Sans

Body Font

-apple-system

Sans16px

Contrast Ratio

1.9:1

22 issues

Reading Comfort

~38 CPL

Narrow lines
25px
h2
18px
h3
16px
p

✅ 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 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 22 elements below WCAG AA threshold (min 1.9:1).

❌ 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 0

Color Palette

7 unique colors
15.51:1 AAA Light
#ffffff
Background· 38.699999999999996%
#252422
Other· 34%
#d22121
Primary· 0%
#b4c2b2
Secondary· 6.7%
#a99894
Secondary· 6.1%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

1
CookiebotMid-Market

Cookie consent and privacy compliance tools

2

Categories

3

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Well-developed marketing technology stack

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Scripts & Styles

19 Resources

16
Scripts
3
Styles
9
Async
8
Defer

Top Script Sources

mrtns.sk(9)measure.martinus.cz(2)consent.cookiebot.com(2)googletagmanager.com(1)mrecs.algopine.com(1)

Website Identity

martinus.cz

knihy@martinus.sk
19 years old
Location detected: 🇨🇿 Czech Republicvia tld
REG-WEBGLOBE📧 Google Workspacecs

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Last analyzed: 15 May 2026 at 11:45

Historical Analysis & Change Tracking