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sblog.cz

https://sblog.cz· First analyzed 22 May 2026· Updated 22 May 2026
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sblog.cz
Desktop screenshot of sblog.cz
Mobile screenshot of sblog.cz
Mobile

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Hosting Provider

Seznam - II

IP Address

77.75.78.173

Site Location

🇨🇿 Czech Republicvia tld

Server Location

🇨🇿 Prague, Czechia

ASN

AS43037

Server

Envoy

Nameservers

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

Performance

99

Core Web Vitals

Weight

First Contentful Paint
805 ms10%
Speed Index
1.0 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
321 KB
77 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
CMS
WordPress
Infrastructure
Hosting
Seznam - II

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

9 Technologies Detected

Plugins

3
Sblog Wpify BlocksOnesignal Free Web Push NotificationsSblog Fancybox

Analytics

2
Google Analytics
Google Analytics 4

Libraries

1
jQueryv3.7.1

UI Components

1
Fancybox

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

SEO Analysis

C66/100
21
6
2
Meta Tags4/15
Content11/12
Headings7/8
Technical22/25
E-E-A-T2/7
Images3/7
Links2/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
S
sblog.czsblog.cz

Blog Seznam.cz

No description available for this page.

Title Length14 chars

Recommended: 50-60 chars (~85px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing meta description — important for click-through rates in SERPs
  • • Most images missing alt text (12/20) — critical for accessibility and SEO

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

3,042 URLs

robots.txt

13 rules

Sitemap reference found

Local SEO

Local Search Readiness

11/100
Poor
3 14 1

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

D46/100
Bot Access
20/25
Machine Read.
11/25
Schema Data
4/25
Citation
11/25

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
navheader/footer
Text ratio:7%
Words:855
Token eff.:Optimal
Sections/1K:11.7
Depth:2/5

Structured Data

2 JSON-LD
WebSiteSearchAction
sameAs entity links

Citation Readiness

Opening Summary13w
Descriptive Headingsavg 9.1w
Canonical URL
Open Graph2/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
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.
B
74/100
13
Passed
2
Critical
2
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
17/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
5/15
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
13/15
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.
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.
58/100
A+
40 mg
CO₂e / view
320.8 KB
Page Weight
90%
Cleaner Than
New Visitor
45 mg
vs
Returning (cached)
23 mg
Annual (10K/mo)
4.8 kg
Emission Segments
Data Center
9 mg
Network
10 mg
Device
21 mg
Resource Breakdown
JavaScript
60.5 KB
Images
218.5 KB
CSS
25.6 KB
HTML
16.2 KB
Green Hosting Not Verified
Seznam - II
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

56d

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

19.04.2026

Valid Until

18.07.2026

Subject Alternative Names (1)

blog.seznam.cz

SHA-256 Fingerprint

60:EC:9F:6A:9B:EC:53:55:07:CC:0C:A1:74:B7:98:9B:54:2F:D3:8C...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🟡 3s(max-age=3, must-revalidate,max-age=600)
content-encoding
📦 Gzip(gzip)
content-length
16281
content-type
text/html; charset=UTF-8
date
Fri, 22 May 2026 19:51:43 GMT
expires
Fri, 22 May 2026 20:01:43 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

25

SPF
DKIM
DMARC

Domain Information

sblog.cz

Domain Age
22y 8m

Created

11.09.2003

Expires

10.09.2026

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

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.
A
85/100
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
initial-scale=1.0, width=device-width

Typography & Readability

Arial

WCAG AA
82/100
Readability
/30
27/30

18px · LH 1.50

Hierarchy
/20
15/20

2.67x ratio

WCAG
/25
19/25

4.55:1 min contrast

Performance
/25
21/25

System fonts

Heading Font

Arial

Sans48px

Body Font

Arial

Sans18px

Contrast Ratio

4.55:1

WCAG AA (≥4.5:1)

Reading Comfort

~37 CPL

Narrow lines
48px
h1
48px
h2
20px
h4
18px
p

✅ Excellent readability: 18px body text is ideal for all devices.

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

⚠️ Hard to read: Flesch score 42/100. Simplify sentences for wider reach.

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

❌ Broken heading hierarchy: 3 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

✅ Strong hierarchy: Headlines are 2.7x larger than body text.

Flesch 42

Color Palette

5 unique colors
12.42:1 AAA Light
#ffffff
Background· 76.5%
#373337
Other· 3.7%
#cc0000
Primary· 0%
#7e9e7c
Secondary· 3.8%
#c4cfc7
Secondary· 3.7%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

24 Resources

20
Scripts
4
Styles
5
Async
2
Defer

Top Script Sources

blog.seznam.cz(10)googletagmanager.com(5)h.seznam.cz(3)cdn.onesignal.com(2)

Website Identity

Seznam.cz

Seznam.cz

Corporation
blog.seznam.cz
22 years old
Location detected: 🇨🇿 Czech Republicvia tld
REG-SEZNAMcs-CZ

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Last analyzed: 22 May 2026 at 19:51

Historical Analysis & Change Tracking