alza.cz

https://alza.cz· First analyzed 09 Sept 2026· Updated 09 Sept 2026

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alza.cz

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.18.32.170

Site Location

🇨🇿 Czech Republicvia tld

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

gigi.ns.cloudflare.com.beau.ns.cloudflare.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

958 ms10%

Speed Index

1.2 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.2 MB

194 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

10 Technologies Detected

CSS Frameworks

UI Components

Icon Libraries

Fonts

Analytics

Tag Managers

Advertising

Microsoft Advertising

Other

Google Optimize

CDN

Cloudflare

SEO Analysis

B71/100

Meta Tags15/15

Content9/12

Headings8/8

Technical13/21

E-E-A-T3/7

Images5/7

Links5/5

URL5/5

Social2/5

Freshness0/4

Mobile3/4

Indexability3/3

alza.czalza.cz

Alza.cz – rychlý a pohodlný nákup odkudkoliv | Alza.cz

Největší obchod s počítači a elektronikou ✅ Přes 35 prodejen, více než 3 100 Alzaboxů a 34 900 dalších odběrných míst ✅ Elektronika, hračky, domácí potřeby, ...

Title Length54 chars

Recommended: 50-60 chars (~315px / 580px)

Description Length160 chars

Recommended: 120-160 chars

Issues (1)

• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

8 issues found

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Local SEO

Local Search Readiness

11/100

Poor

3 14 2

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

Sponsored

AI & LLM Readiness

D43/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

0/25

Citation

16/25

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:2%

Words:1,141

Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary55w

Descriptive Headingsavg 5w

Canonical URL

Open Graph2/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

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.

70/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

16/20

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

14/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

8/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

2/15

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.

64/100

119 mg

CO₂e / view

1.2 MB

Page Weight

70%

Cleaner Than

New Visitor

136 mg

Returning (cached)

68 mg

Annual (10K/mo)

14.3 kg

Emission Segments

Data Center

6 mg

Network

35 mg

Device

78 mg

Resource Breakdown

JavaScript

1.0 MB

Images

7.8 KB

CSS

71.4 KB

Fonts

4.3 KB

HTML

65.3 KB

Other

4.2 KB

Green Hosting Verified

Cloudflare

GWF Verified

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

85%Very Good

Critical / Transactional

HTTPS

WAF

77d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

28.08.2026

Valid Until

26.11.2026

Subject Alternative Names (2)

alza.cz*.alza.cz

SHA-256 Fingerprint

99:CC:C5:1F:9E:E4:C7:17:35:6A:53:52:80:16:B6:AF:19:44:11:97...

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HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🔴 No Cache(no-cache)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

a386dea43956dbf7-FRA

content-encoding

⚡ Brotli(br)

content-security-policy

frame-ancestors 'self';

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

alza-cz.mail.protection.outlook.com

Domain Information

alza.cz

Domain Age

22y 6m

Created

08.03.2004

Expires

07.03.2027

Last Updated

15.09.2023

Registrar

REG-WEBGLOBE

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.

66/100

Not Mobile Friendly74 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.

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Roboto

WCAG Partial

55/100

Readability

/30

16/30

14px · LH 1.50

Hierarchy

/20

12/20

1.71x ratio

WCAG

/25

16/25

1:1 min contrast

Performance

/25

11/25

1 font · 4 req

Heading Font

Roboto

Sans24px

Body Font

Roboto

Sans14px

Contrast Ratio

1:1

10 issues

Reading Comfort

~81 CPL

Wide lines

24px

20px

14px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

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

⚠️ Wide lines: ~81 chars/line. Use max-width: 65ch for comfortable reading.

❌ Very complex text: Flesch score 23/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 10 elements below WCAG AA threshold (min 1.0:1).

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

GGoogle FontsFlesch 23

Color Palette

12 unique colors

2.72:1 Fail Light

#ffffff

Background· 27.799999999999997%

#a799a0

Other· 6.2%

#1855a6

Primary· 14.799999999999999%

#3a3585

Secondary· 9%

#4385ab

Secondary· 6.6%

#1c4497

Primary· 6.5%

#a15361

Secondary· 5.3%

#0e1936

Accent· 5.1%

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(6)1161575864.rsc.cdn77.org(6)cdn.alza.cz(3)c.seznam.cz(1)bat.bing.com(1)

Website Identity

alza.cz

22 years old

Location detected: 🇨🇿 Czech Republicvia tld

REG-WEBGLOBE📧 Microsoft 365cs-CZ

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Last analyzed: 09 Sept 2026 at 14:27

Historical Analysis & Change Tracking