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estav.cz

https://estav.cz· First analyzed 28 May 2026· Updated 28 May 2026
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estav.cz
Desktop screenshot of estav.cz
Mobile screenshot of estav.cz
Mobile

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Hosting Provider

ACTIVE24

IP Address

81.95.98.235

Site Location

🇨🇿 Czech Republicvia tld

Server Location

🇨🇿 Prague, Czechia

ASN

AS25234

Organization

ACTIVE24

Server

Apache

Nameservers

ns3.websupport.eu.ns1.websupport.cz.ns2.websupport.cz.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
730 ms10%
Speed Index
949 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1 MB
97 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Hosting
ACTIVE24

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

12 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Hotjar

UI Components

2
Owl CarouselFancybox

CSS Frameworks

2
Bootstrap
Tailwind CSS

Libraries

1
jQueryv1.12.4

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Advertising

1
Google Ads

Web Servers

1
Apachev2.4.29

SEO Analysis

C69/100
19
8
1
Meta Tags13/15
Content11/12
Headings3/8
Technical18/25
E-E-A-T3/7
Images4/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile1/4
Indexability3/3
E
estav.czestav.cz

ESTAV.cz - Architektura. Stavba. Bydlení.

Novinky ze stavebnictví, architektury, bydlení a TZB. Aktuální stavební trendy, materiály, realizace, zkušenosti, řešení pro Vaši stavbu ve specializovaných ...

Description truncated.
Title Length41 chars

Recommended: 50-60 chars (~241px / 580px)

Description Length166 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing H1 tag — every page should have exactly one H1

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

14,059 URLs

robots.txt

4 rules

Sitemap reference found

Local SEO

Local Search Readiness

4/100
Poor
1 15 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

D47/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
Citation
17/25

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:9%
Words:2,793
Token eff.:Optimal
Sections/1K:15.4
Depth:1/5

Structured Data

Microdata

Citation Readiness

Opening Summary22w
Descriptive Headingsavg 7.9w
Canonical URL
Open Graph3/3
Twitter Card0/3
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.
B
74/100
11
Passed
5
Critical
0
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
11/20
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
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
9/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 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.
35/100
B
133 mg
CO₂e / view
1.0 MB
Page Weight
70%
Cleaner Than
New Visitor
152 mg
vs
Returning (cached)
76 mg
Annual (10K/mo)
15.9 kg
Emission Segments
Data Center
30 mg
Network
32 mg
Device
71 mg
Resource Breakdown
JavaScript
340.3 KB
Images
598.0 KB
CSS
89.3 KB
Fonts
1.9 KB
HTML
18.6 KB
Other
23.6 KB
Green Hosting Not Verified
ACTIVE24
6 recommendations
  • •Carbon footprint recommendation preview...
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F

Security Score

21%Critical
Interactive

HTTPS

No WAF

134d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

08.09.2025

Valid Until

09.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (6)

www.estav.cze-stav.czestav.czfotoblog.estav.czm.estav.czwww.e-stav.cz

SHA-256 Fingerprint

D1:0C:68:19:06:74:10:98:8A:3B:A8:B2:4F:0A:A1:12:0D:4E:21:F5...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection
Keep-Alive
content-encoding
📦 Gzip(gzip)
content-length
18729
content-type
text/html; charset=utf-8
date
Thu, 28 May 2026 05:53:44 GMT
keep-alive
timeout=2, max=100
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

45

SPF
DKIM
DMARC

MX Records (1)

estav-cz.mail.protection.outlook.com

Domain Information

estav.cz

Domain Age
26y 10m

Created

15.07.1999

Expires

23.10.2026

Last Updated

21.03.2026

Registrar

REG-ACTIVE24

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
Privacy policy page linked
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
69/100
Mobile Friendly7 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=1.0
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Roboto Condensed + Open Sans

WCAG Partial
59/100
Readability
/30
19/30

13px · LH 1.43

Hierarchy
/20
8/20
WCAG
/25
16/25

2.07:1 min contrast

Performance
/25
16/25

2 fonts · 5 req

Heading Font

Roboto Condensed

Sans

Body Font

Open Sans

Sans13px

Contrast Ratio

2.07:1

22 issues

Reading Comfort

~47 CPL

Optimal (45–75)
17px
h2
16px
h3
14px
h4
13px
p

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

✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

✅ Optimal line length: ~47 chars/line (ideal 45–75 CPL).

⚠️ Partial contrast: 22 elements below WCAG AA threshold (min 2.1:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Lean font stack: 2 font families keeps load times fast.

GGoogle FontsBuy on MyFontsFlesch 65

Color Palette

4 unique colors
4.81:1 AA Light
#888888
Other· 65.79999999999998%
#1c1c1c
Text· 26.4%

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

3
Google Tag ManagerFree
Google AnalyticsFree
HotjarMid-Market

User behavior and product analytics

Social Media

1
Facebook SDKFree

Social widgets and sharing tools

2

Categories

4

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Well-developed marketing technology stack

Ad Networks

Google Ad ManagerIndex Exchange

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Scripts & Styles

26 Resources

20
Scripts
6
Styles
7
Async
1
Defer

Top Script Sources

local(13)googletagmanager.com(2)cdn.cookie-script.com(2)static.hotjar.com(1)spir.hit.gemius.pl(1)

Website Identity

estav.cz

26 years old
Location detected: 🇨🇿 Czech Republicvia tld
REG-ACTIVE24📧 Microsoft 365cs

Social Profiles

FacebookX (Twitter)

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Last analyzed: 28 May 2026 at 05:54

Historical Analysis & Change Tracking

estav.cz Technology Stack - Built With jQuery, Owl Carousel, Fancybox, Bootstrap, Tailwind CSS | StackOptic | StackOptic