lupa.cz

https://lupa.cz· First analyzed 30 Apr 2026· Updated 30 Apr 2026

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lupa.cz

Mobile

Sponsored

Hosting Provider

Internet Info, s.r.o.

IP Address

91.213.160.123

Site Location

🇨🇿 Czech Republicvia tld

Server Location

🇨🇿 Dolní Břežany, Czechia

ASN

AS24971

Organization

Internet Info, s.r.o.

Server

Nginx

Nameservers

ns6.adminit.cz.ns.iinfo.cz.

Performance

Core Web Vitals

Weight

First Contentful Paint

757 ms10%

Speed Index

984 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

869 KB

174 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Internet Info, s.r.o.

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

10 Technologies Detected

Advertising

Google Ads Google AdSense Criteo

Analytics

CSS Frameworks

Fonts

Tag Managers

Web Servers

Customer Support

SEO Analysis

C67/100

Meta Tags12/15

Content3/12

Headings8/8

Technical19/25

E-E-A-T0/7

Images3/7

Links5/5

URL5/5

Social5/5

Freshness0/4

Mobile4/4

Indexability3/3

lupa.czlupa.cz

Lupa.cz - server o českém Internetu

Svět IT, dění na trhu, bezpečnost na internetu, připojení k internetu, mobilní internet, online média a reklama, cloudové služby.

Title Length35 chars

Recommended: 50-60 chars (~215px / 580px)

Description Length129 chars

Recommended: 120-160 chars

Issues (2)

• Very thin content (6 words). Search engines need substantial content for ranking.
• Most images missing alt text (68/86) — critical for accessibility and SEO

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

49 URLs

49 sub-sitemaps

robots.txt

14 rules

Sitemap reference found

Local SEO

Local Search Readiness

3/100

Poor

1 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

F35/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

0/25

Citation

8/25

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:2,257

Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

78/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

9/20

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

11/15

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

ARIA & Roles

8/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

2 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.

47/100

108 mg

CO₂e / view

869.1 KB

Page Weight

80%

Cleaner Than

New Visitor

123 mg

Returning (cached)

61 mg

Annual (10K/mo)

12.9 kg

Emission Segments

Data Center

24 mg

Network

26 mg

Device

58 mg

Resource Breakdown

JavaScript

734.1 KB

Images

685 B

Fonts

3.5 KB

HTML

111.7 KB

Other

19.1 KB

Green Hosting Not Verified

Internet Info, s.r.o.

6 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

66%Fair

Interactive

HTTPS

No WAF

77d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

18.04.2026

Valid Until

17.07.2026

Subject Alternative Names (12)

beta.lupa.czblog-beta.lupa.czblog.lupa.czdiners-beta.lupa.czdiners.lupa.czkristalova.lupa.czlupa.cznastroje.lupa.cz+4 more

SHA-256 Fingerprint

36:5C:2C:01:3D:E1:08:0C:C1:AA:4A:32:5B:81:FA:05:E7:2D:15:73...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-security-policy

upgrade-insecure-requests

content-type

text/html; charset=utf-8

date

Thu, 30 Apr 2026 15:57:09 GMT

server

nginx

strict-transport-security

max-age=63072000; includeSubDomains; preload

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

ASPMX.L.GOOGLE.COM

ALT4.ASPMX.L.GOOGLE.COM

ALT1.ASPMX.L.GOOGLE.COM

ALT2.ASPMX.L.GOOGLE.COM

+1 more

Domain Information

lupa.cz

Domain Age

28y 5m

Created

20.11.1997

Expires

19.10.2026

Last Updated

12.02.2019

Registrar

REG-INTERNET-CZ

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

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.

81/100

Mobile Friendly222 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

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Arial + Helvetica

WCAG AA

64/100

Readability

/30

11/30

13px · LH 1.20

Hierarchy

/20

19/20

2.4x ratio · ✓ H1→H6

WCAG

/25

20/25

4.63:1 min contrast

Performance

/25

14/25

System fonts

Heading Font

Arial

Sans32px

Body Font

Helvetica

Sans13px

Contrast Ratio

4.63:1

WCAG AA (≥4.5:1)

Reading Comfort

~38 CPL

Narrow lines

32px

24px

25px

13px

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

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

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.6:1).

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

✅ Strong hierarchy: Headlines are 2.4x larger than body text.

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

GGoogle FontsFluid TypeFlesch 61

Color Palette

8 unique colors

2.87:1 Fail Light

#ffffff

Primary· 52.8%

#999899

Other· 4.2%

#b51e26

Accent· 4.2%

#f6aaae

Primary· 3.2%

#88636c

Secondary· 3%

#dfb8ba

Secondary· 2%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

f.lupa.cz(5)cdn.cpex.cz(4)googletagmanager.com(2)pagead2.googlesyndication.com(2)track.adform.net(1)

Website Identity

lupa.cz

28 years old

Location detected: 🇨🇿 Czech Republicvia tld

REG-INTERNET-CZ📧 Google Workspacecs

Social Profiles

Facebook X (Twitter)Instagram

Sponsored

Last analyzed: 30 Apr 2026 at 15:57

Historical Analysis & Change Tracking