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seikan.cz

https://seikan.cz· First analyzed 19 May 2026· Updated 19 May 2026
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seikan.cz
Desktop screenshot of seikan.cz
Mobile screenshot of seikan.cz
Mobile

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Hosting Provider

Webhosting Services

IP Address

185.129.138.203

Site Location

🇨🇿 Czech Republicvia phone

Server Location

🇨🇿 Prague, Czechia

ASN

AS24806

Organization

Webhosting Services

Server

aruba-proxy

Nameservers

ns.forpsi.net.ns.forpsi.cz.ns.forpsi.it.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
616 ms10%
Speed Index
801 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
5.3 MB
47 requests

Image Optimization

WebP
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Hosting
Webhosting Services

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

9 Technologies Detected

CSS Frameworks

3
Bootstrap
Tailwind CSS
Normalize.css

Libraries

2
jQueryv3.6.0
Lightbox

Other

1
GSAPv3.13.0

UI Components

1
Owl Carousel

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

SEO Analysis

A84/100
24
2
0
Meta Tags15/15
Content11/12
Headings8/8
Technical23/25
E-E-A-T2/7
Images3/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
S
seikan.czseikan.cz

Účetnictví, mzdy a DPH – účetní firma Zlín | SEIKAN

Účetní firma Zlín (SEIKAN): účetnictví, mzdy, DPH a poradenství. Přesné výstupy, hlídání termínů a srozumitelná komunikace.

Title Length51 chars

Recommended: 50-60 chars (~308px / 580px)

Description Length123 chars

Recommended: 120-160 chars

Issues (0)

    2 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    11 URLs

    robots.txt

    3 rules

    Sitemap reference found

    Allows all crawlers

    Local SEO

    Local Search Readiness

    23/100
    Needs Work
    7 10

    Sponsored

    AI & LLM Readiness

    D44/100
    Bot Access
    20/25
    Machine Read.
    13/25
    Schema Data
    2/25
    Citation
    9/25

    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:5%
    Words:627
    Token eff.:Optimal
    Sections/1K:49.4
    Depth:2/5

    Structured Data

    2 JSON-LD
    Organization×1.1

    Citation Readiness

    Opening Summary12w
    Descriptive Headingsavg 2.5w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    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.
    A
    88/100
    13
    Passed
    3
    Critical
    0
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    20/20
    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
    7/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    11/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    1 recommendation
    • •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.
    20/100
    F
    672 mg
    CO₂e / view
    5.3 MB
    Page Weight
    5%
    Cleaner Than
    New Visitor
    768 mg
    vs
    Returning (cached)
    384 mg
    Annual (10K/mo)
    80.6 kg
    Emission Segments
    Data Center
    150 mg
    Network
    161 mg
    Device
    361 mg
    Resource Breakdown
    JavaScript
    420.2 KB
    Images
    4.2 MB
    CSS
    711.2 KB
    Fonts
    1.1 KB
    HTML
    9.3 KB
    Green Hosting Not Verified
    Webhosting Services
    8 recommendations
    • •Carbon footprint recommendation preview...
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    D

    Security Score

    41%Poor
    Interactive

    HTTPS

    No WAF

    239d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Actalis S.p.A.

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2+H3

    Valid From

    13.01.2026

    Valid Until

    13.01.2027

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    seikan.cz*.seikan.cz

    SHA-256 Fingerprint

    1C:41:44:FF:F5:3F:54:6F:3B:B9:68:E5:B6:4C:42:55:F3:AF:1A:5A...

    Top Recommendations

    Security recommendation preview

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    Upgrade to view header details

    HTTP Headers

    Developer Console

    alt-svc
    h3=":443"; ma=86400
    content-encoding
    📦 Gzip(gzip)
    content-security-policy
    upgrade-insecure-requests;
    content-type
    text/html; charset=UTF-8
    date
    Tue, 19 May 2026 18:05:20 GMT
    server
    aruba-proxy
    Good Warning Issue

    Email Infrastructure

    Microsoft 365

    Score

    50

    SPF
    DKIM
    DMARC

    MX Records (1)

    seikan-cz.mail.protection.outlook.com

    Domain Information

    seikan.cz

    Domain Age
    20y 1m

    Created

    14.04.2006

    Expires

    13.04.2027

    Last Updated

    13.01.2026

    Registrar

    REG-INTERNET-CZ

    DNSSEC
    Not Enabled

    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 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
    2 recommendations
    • •Mobile compatibility recommendation preview...
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    Typography & Readability

    Montserrat

    WCAG Partial
    78/100
    Readability
    /30
    25/30

    19px · LH 1.50

    Hierarchy
    /20
    17/20

    2.92x ratio · ✓ H1→H6

    WCAG
    /25
    16/25

    1:1 min contrast

    Performance
    /25
    20/25

    System fonts

    Heading Font

    Montserrat

    Sans56px

    Body Font

    Montserrat

    Sans19px

    Contrast Ratio

    1:1

    9 issues

    Reading Comfort

    ~31 CPL

    Narrow lines
    56px
    h1
    52px
    h2
    19px
    p

    ✅ Excellent readability: 19px body text is ideal for all devices.

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

    ⚠️ Hard to read: Flesch score 40/100. Simplify sentences for wider reach.

    ⚠️ Partial contrast: 9 elements below WCAG AA threshold (min 1.0:1).

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

    ✅ Strong hierarchy: Headlines are 2.9x larger than body text.

    GGoogle FontsBuy on MyFontsFlesch 40

    Color Palette

    11 unique colors
    Dark
    #71686c
    Other· 5.9%
    #faf8fb
    Background· 32.1%
    #0f0b12
    Primary· 0%
    #efcebb
    Accent· 10.5%
    #dab3a3
    Secondary· 8.9%
    #a17063
    Secondary· 6.8%
    #f0e0db
    Secondary· 6.5%
    #a5847b
    Secondary· 6.5%

    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

    Sponsored

    Scripts & Styles

    20 Resources

    12
    Scripts
    8
    Styles
    0
    Async
    2
    Defer

    Top Script Sources

    js(6)cdnjs.cloudflare.com(5)cdn.jsdelivr.net(1)

    Website Identity

    SEIKAN s.r.o.

    SEIKAN s.r.o.

    Organization
    [email protected]
    +420724269896
    www.seikan.cz/
    20 years old
    Location detected: 🇨🇿 Czech Republicvia phone
    REG-INTERNET-CZ📧 Microsoft 365cs

    Sponsored

    Last analyzed: 19 May 2026 at 18:05

    Historical Analysis & Change Tracking

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