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seznam.cz

https://seznam.cz· First analyzed 15 Feb 2026· Updated 15 Feb 2026
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seznam.cz
Desktop screenshot of seznam.cz
Mobile screenshot of seznam.cz
Mobile

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Hosting Provider

IP Address

77.75.77.222

Server Location

🇨🇿 Praha 10, Czechia

ASN

AS43037

Server

Envoy

Nameservers

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

Performance

Page Speed

1.2 MB
250 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Headless
⚙️ SSR
Decoupled
Frontend
Styling
Tailwind CSS
API
Data Source
Headless CMS
Strapi
Infrastructure
Hosting
Seznam - III

Detected API Sources

https://login.szn.cz/js/api/3/...

Technology Stack

6 Technologies Detected

SEO Analysis

D52/100
8
3
2
S
seznam.czseznam.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

Description Length140 chars

Recommended: 120-160 chars

Issues (2)

  • Missing H1 tag - every page should have one H1
  • Many images missing alt text (191/249)

Crawlability

Sitemap

Type: standard

robots.txt

40 rules

Sitemap reference found

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C

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

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

02.02.2026

Valid Until

03.05.2026

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

3A:AB:8C:BC:69:B3:8B:FC:C8:99:3C:1E:11:81:E8:0D:3B:B6:5D:50...

Top Recommendations

Security recommendation preview

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
Sun, 15 Feb 2026 06:21:10 GMT
pragma
no-cache
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mx2.seznam.cz
mx1.seznam.cz

Domain Information

seznam.cz

Domain Age
29y 4m

Created

07.10.1996

Expires

28.10.2026

Last Updated

05.09.2022

Registrar

REG-SEZNAM

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

Arial

68/100
Readability
/30
32/40

16px · LH 1.25

Hierarchy
/20
8/25

1x ratio

WCAG
/25
15/15

Contrast: undefined

Performance
/25
20/20

System fonts

Heading Font

Arial

Sans16px

Body Font

Arial

Sans16px

Contrast Ratio

--

Reading Comfort

~45 CPL

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

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

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

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Protected text on images: Using gradient for readability.

✅ Optimal line length: ~45 characters per line is comfortable to read.

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

2

User behavior and product analytics

Privacy & Cookies

1

Cookie consent and privacy compliance tools

2

Categories

3

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Well-developed marketing technology stack

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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)

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Last analyzed: 15 Feb 2026 at 06:21

Historical Analysis & Change Tracking