StackOptic
Back to Search
czc.cz favicon

czc.cz

https://czc.cz· First analyzed 07 May 2026· Updated 07 May 2026
Export
czc.cz
Desktop screenshot of czc.cz
Mobile screenshot of czc.cz
Mobile

Sponsored

Hosting Provider

Allegro sp. z o.o.

IP Address

5.134.213.82

Site Location

🇨🇿 Czech Republicvia phone

Server Location

🇵🇱 Warsaw, Poland

ASN

AS42656

Organization

Allegro sp. z o.o.

Nameservers

dns4.allegro.pl.dns1.allegro.pl.dns2.allegro.pl.dns3.allegro.pl.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
677 ms10%
Speed Index
880 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
196 KB
61 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Allegro sp. z o.o.

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

3 Technologies Detected

CSS Frameworks

2
Tailwind CSS
Ant Design

Advertising

1
Microsoft Advertising

SEO Analysis

C65/100
18
7
2
Meta Tags15/15
Content10/12
Headings3/8
Technical17/21
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
C
czc.czczc.cz

czc-cz – váš oblíbený internetový obchod na Allegru

Produkty z obchoduczc-cz jsou dostupné na Allegru! Nakupujte bez starostí, transakce jsou 100% bezpečné. Vyrazte nakupovat!

Title Length51 chars

Recommended: 50-60 chars (~307px / 580px)

Description Length123 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (267/531) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

51 rules

Sitemap reference found

Local SEO

Local Search Readiness

14/100
Poor
4 12 1

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

Sponsored

AI & LLM Readiness

F36/100
Bot Access
20/25
Machine Read.
1/25
Schema Data
4/25
Citation
11/25

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:1%
Words:3,684
Token eff.:Poor Structure
Sections/1K:0.3

Structured Data

1 JSON-LD
Organization×1.1(min)microdataWebSiteSearchAction

Citation Readiness

Opening Summary96w
Descriptive Headingsavg 4w
Canonical URL
Open Graph0/3
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.
C
67/100
10
Passed
5
Critical
2
Warnings
Images & Alt Text
18/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
11/20
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
4/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
4 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.
66/100
A+
24 mg
CO₂e / view
196.0 KB
Page Weight
95%
Cleaner Than
New Visitor
28 mg
vs
Returning (cached)
14 mg
Annual (10K/mo)
2.9 kg
Emission Segments
Data Center
5 mg
Network
6 mg
Device
13 mg
Resource Breakdown
HTML
196.0 KB
Green Hosting Not Verified
Allegro sp. z o.o.
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

76%Good
Interactive

HTTPS

No WAF

202d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

12.11.2025

Valid Until

25.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.czc.czczc.cz

SHA-256 Fingerprint

8A:9F:3A:E8:9F:E4:02:F8:B9:90:4E:74:1E:C5:B5:8B:87:DC:63:95...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

accept-ch
Sec-CH-Prefers-Color-Scheme, Sec-CH-Prefers-Contrast, Sec-CH...
accept-ranges
bytes
age
0
cache-control
🔴 No Cache(private, no-store)
content-encoding
📦 Gzip(gzip)
content-security-policy
object-src 'none'; base-uri 'none'; script-src https://cdn.a...
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

70

SPF
DKIM
DMARC

MX Records (1)

allegro.in.tmes.trendmicro.eu

Domain Information

czc.cz

Domain Age
21y 9m

Created

04.08.2004

Expires

03.08.2026

Last Updated

15.01.2025

Registrar

REG-MARKMONITOR

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
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.
C
68/100
Mobile Friendly105 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,minimum-scale=1,maximum-scale=1,user-scalable=no,viewport-fit=cover
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Times New Roman

WCAG AA
72/100
Readability
/30
24/30

16px · LH --

Hierarchy
/20
7/20
WCAG
/25
22/25

4.71:1 min contrast

Performance
/25
19/25

1 font

Heading Font

Times New Roman

Serif

Body Font

Times New Roman

Serif16px

Contrast Ratio

4.71:1

WCAG AA (≥4.5:1)

Reading Comfort

~62 CPL

Optimal (45–75)
24px
h2
19px
h3
16px
h4
16px
p

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

✅ Optimal line length: ~62 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 42/100. Simplify sentences for wider reach.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.7:1).

❌ 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 42

Color Palette

8 unique colors
2.86:1 Fail Light
#ffffff
Background· 82.3%
#96999d
Other· 4.4%
#876a60
Primary· 2%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

Sponsored

Scripts & Styles

24 Resources

20
Scripts
4
Styles
20
Async
0
Defer

Top Script Sources

assets.allegrostatic.com(20)

Website Identity

czc.cz

+420313110064
21 years old
Location detected: 🇨🇿 Czech Republicvia phone
REG-MARKMONITORcs

Sponsored

Last analyzed: 07 May 2026 at 15:43

Historical Analysis & Change Tracking