kosik.cz

https://kosik.cz· First analyzed 20 May 2026· Updated 20 May 2026

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kosik.cz

Mobile

Sponsored

Hosting Provider

Fastly, Inc.

IP Address

151.101.66.132

Site Location

🇨🇿 Praha 6, Czech Republicvia schema_nap

Server Location

🇨🇦 Montreal, Canada

ASN

AS54113

Organization

Fastly, Inc.

CDN

Azure Cdn

Nameservers

ns3-01.azure-dns.org.ns4-01.azure-dns.info.ns1-01.azure-dns.com.ns2-01.azure-dns.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.1 s10%

Speed Index

1.4 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.2 MB

121 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Ghost

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

4 Technologies Detected

Analytics

CSS Frameworks

Tag Managers

SEO Analysis

C69/100

Meta Tags15/15

Content5/12

Headings3/8

Technical23/25

E-E-A-T2/7

Images1/7

Links3/5

URL5/5

Social5/5

Freshness0/4

Mobile4/4

Indexability3/3

kosik.czkosik.cz

Košík.cz - Potraviny online jednoduše ve velkém | Košík.cz

Množstevní slevy na tisíce produktů v sekci Multikup. Doprava zdarma na velké nákupy. Nový akční leták každý týden. Věrnostní kluby.

Title Length58 chars

Recommended: 50-60 chars (~347px / 580px)

Description Length132 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (5/6) — critical for accessibility and SEO

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

7 URLs

7 sub-sitemaps

robots.txt

11 rules

Sitemap reference found

Local SEO

Local Search Readiness

28/100

Needs Work

7 14

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AI & LLM Readiness

D45/100

Bot Access

20/25

Machine Read.

5/25

Schema Data

6/25

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:1%

Words:58

Token eff.:Too Short

Sections/1K:10

Depth:1/5

Structured Data

2 JSON-LD

Organization×1.1WebSiteSearchAction

Citation Readiness

Opening Summary48w

Descriptive Headingsavg 4w

Canonical URL

Open Graph3/3

Twitter Card3/3

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.

61/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

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...

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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.

56/100

126 mg

CO₂e / view

1.2 MB

Page Weight

70%

Cleaner Than

New Visitor

144 mg

Returning (cached)

72 mg

Annual (10K/mo)

15.1 kg

Emission Segments

Data Center

6 mg

Network

37 mg

Device

83 mg

Resource Breakdown

JavaScript

690.7 KB

Images

363.2 KB

CSS

97.2 KB

HTML

2.6 KB

Other

89.9 KB

Green Hosting Verified

Fastly, Inc.

Provider Match

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

97d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

05.08.2025

Valid Until

25.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.kosik.czkosik.cz

SHA-256 Fingerprint

87:E9:F8:DD:A5:1E:76:A0:E9:03:7F:D7:8D:CD:BB:CA:7A:45:8A:00...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

alt-svc

h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=864...

cache-control

🔴 No Cache(no-cache)

content-encoding

📦 Gzip(gzip)

content-md5

bo00VnY5RVjUsFUsYbgKXg==

content-type

text/html

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

kosik-cz.mail.protection.outlook.com

Domain Information

kosik.cz

Domain Age

26y 9m

Created

12.08.1999

Expires

26.10.2027

Last Updated

09.02.2022

Registrar

REG-INTERNET-CZ

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.

79/100

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

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Inter

WCAG AA

77/100

Readability

/30

24/30

16px · LH 1.38

Hierarchy

/20

12/20

0.81x ratio · ✓ H1→H6

WCAG

/25

21/25

4.67:1 min contrast

Performance

/25

20/25

1 font · 1 req

Heading Font

Inter

Sans13px

Body Font

Inter

Sans16px

Contrast Ratio

4.67:1

WCAG AA (≥4.5:1)

Reading Comfort

~43 CPL

Narrow lines

13px

24px

20px

36px

16px

Perfect Fifth

Scale

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

⚠️ Tight line spacing (1.38). Increase to 1.4–1.6 for better readability.

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

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

⚠️ Fluid type without rem: clamp() detected but missing rem units. May fail WCAG 1.4.4 zoom test.

Buy on MyFontsFluid Type

Color Palette

5 unique colors

9.38:1 AAA Dark

#43474a

Text· 58.2%

#ffffff

Primary· 17.6%

#221c24

Text· 14.2%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(3)local(2)

Website Identity

Košík.cz

Organization

Množstevní slevy na tisíce produktů v sekci Multikup. Doprava zdarma na velké nákupy. Nový akční leták každý týden. Věrnostní kluby.

+420 226 220 500

www.kosik.cz/

26 years old

Evropská 2758/11, Praha 6

160 00, Praha 6

Location detected: 🇨🇿 Czech Republic, Praha 6via schema_nap

REG-INTERNET-CZ📧 Microsoft 365cs

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Last analyzed: 20 May 2026 at 05:57

Historical Analysis & Change Tracking