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szn.cz

https://szn.cz· First analyzed 02 May 2026· Updated 02 May 2026
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szn.cz
Desktop screenshot of szn.cz
Mobile screenshot of szn.cz
Mobile

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Hosting Provider

Seznam - III

IP Address

77.75.76.33

Site Location

🇨🇿 Czech Republicvia tld

Server Location

🇨🇿 Prague, Czechia

ASN

AS43037

Server

Envoy

Nameservers

ams.seznam.cz.ans.seznam.cz.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
760 ms10%
Speed Index
988 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.3 MB
250 requests

Image Optimization

Lazy LoadWebPAVIFResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
Infrastructure
Hosting
Seznam - III

Technology Stack

4 Technologies Detected

CSS Frameworks

2
Tailwind CSS
Ant Design

Analytics

2
Google Analytics
Google Analytics 4

SEO Analysis

D59/100
17
8
2
Meta Tags9/15
Content10/12
Headings3/8
Technical18/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile1/4
Indexability3/3
S
szn.czszn.cz

Seznam – najdu tam, co neznám

Nejnavštěvovanější český internetový portál nabízející vyhledávač, e-mail, aktuální zprávy, předpověď počasí a odkazy, které se mohou hodit.

Title Length29 chars

Recommended: 50-60 chars (~186px / 580px)

Description Length140 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (188/240) — critical for accessibility and SEO

10 issues found

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Crawlability

Sitemap

Type: standard

38,178 URLs

robots.txt

40 rules

Sitemap reference found

Local SEO

Local Search Readiness

9/100
Poor
2 14 2

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

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AI & LLM Readiness

D44/100
Bot Access
20/25
Machine Read.
9/25
Schema Data
0/25
Citation
15/25

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:2%
Words:4,284
Token eff.:Good
Sections/1K:3
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary419w
Descriptive Headingsavg 9.2w
Canonical URL
Open Graph3/3
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.
B
79/100
13
Passed
3
Critical
2
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
15/20
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
3/15
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.
22/100
E
290 mg
CO₂e / view
2.3 MB
Page Weight
50%
Cleaner Than
New Visitor
332 mg
vs
Returning (cached)
166 mg
Annual (10K/mo)
34.8 kg
Emission Segments
Data Center
65 mg
Network
70 mg
Device
156 mg
Resource Breakdown
JavaScript
621.0 KB
Images
1.5 MB
CSS
47.1 KB
HTML
188.7 KB
Other
3.3 KB
Green Hosting Not Verified
Seznam - III
7 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
C

Security Score

66%Fair
Interactive

HTTPS

No WAF

60d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

03.04.2026

Valid Until

02.07.2026

Subject Alternative Names (18)

admin.seznam.czadmin100-api.seznam.czadmin100-node.seznam.czadmin100.seznam.czapi.seznam.czapi2.seznam.czfallback.seznam.czladime.seznam.cz+10 more

SHA-256 Fingerprint

1C:4A:39:2C:B9:B8:A0:F2:CC:32:1E:D1:7D:A9:4D:DA:02:44:E6:67...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-cache, no-store, must-revalidate)
content-encoding
📦 Gzip(gzip)
content-security-policy
frame-ancestors 'self'
content-type
text/html; charset=UTF-8
date
Sat, 02 May 2026 10:45:24 GMT
pragma
no-cache
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

70

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

eb540f8c120068d7.mx2.emailprofi.seznam.cz
eb540f8c120068d7.mx1.emailprofi.seznam.cz

Domain Information

szn.cz

Domain Age
25y 6m

Created

10.10.2000

Expires

10.10.2026

Last Updated

05.09.2022

Registrar

REG-SEZNAM

DNSSEC
Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner
Quantcast Choice
Privacy Policy
Terms of Service

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.
C
68/100
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, minimal-ui
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Arial

WCAG AA
65/100
Readability
/30
18/30

14px · LH 1.25

Hierarchy
/20
6/20

1.14x ratio

WCAG
/25
21/25

5.74:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

Arial

Sans16px

Body Font

Arial

Sans14px

Contrast Ratio

5.74:1

WCAG AA (≥4.5:1)

Reading Comfort

~45 CPL

Optimal (45–75)
16px
h1
14px
h2
16px
h3
14px
p
Minor Second
Scale

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

⚠️ Tight line spacing (1.25). Increase to 1.4–1.6 for better readability.

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

⚠️ Hard to read: Flesch score 45/100. Simplify sentences for wider reach.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.7:1).

❌ Broken heading hierarchy: 2 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

Flesch 45

Color Palette

6 unique colors
Light
#ffffff
Background· 68.3%
#bd9894
Primary· 5.1%
#8c4745
Secondary· 3.3%
#eeded6
Secondary· 2.3%

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

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Scripts & Styles

25 Resources

20
Scripts
5
Styles
12
Async
5
Defer

Top Script Sources

local(4)h.seznam.cz(4)d53-a.sdn.cz(3)spir.hit.gemius.pl(2)login.szn.cz(1)

Website Identity

szn.cz

25 years old
Location detected: 🇨🇿 Czech Republicvia tld
REG-SEZNAMcs

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Last analyzed: 02 May 2026 at 10:45

Historical Analysis & Change Tracking