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18let.cz

https://18let.cz· First analyzed 18 May 2026· Updated 18 May 2026
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18let.cz
Desktop screenshot of 18let.cz
Mobile screenshot of 18let.cz
Mobile

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Hosting Provider

Cloudflare
cloudflare.com

IP Address

104.21.79.7

Site Location

🇨🇿 Czech Republicvia tld

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

edna.ns.cloudflare.com.matteo.ns.cloudflare.com.

Performance

95

Core Web Vitals

Weight

First Contentful Paint
1.1 s10%
Speed Index
1.5 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
4.2 MB
45 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Cloudflare
CDN
Cloudflare

Progressive Web App

Web Manifest

Technology Stack

11 Technologies Detected

CSS Frameworks

2
Tailwind CSS
Materialize

Frameworks

1
Alpine.js

Libraries

1
jQueryv3.5.1

UI Components

1
Fancybox

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Payments

1
Stripe

CDN

1
Cloudflare

Languages

1
PHPv5.6.40

Customer Support

1
Zendesk

SEO Analysis

C60/100
18
8
0
Meta Tags8/15
Content7/12
Headings8/8
Technical11/25
E-E-A-T3/7
Images4/7
Links4/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
1
18let.cz18let.cz

Seznamka pro dospělé

Quickdate is the Finest Global Dating Website Around. Connect With Local Singles & Start Your Online Dating Adventure! Enjoy Worldwide Dating with Thrilling ...

Description truncated.
Title Length20 chars

Recommended: 50-60 chars (~124px / 580px)

Description Length176 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap
    robots.txt

    10 rules

    Local SEO

    Local Search Readiness

    3/100
    Poor
    1 14 2

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

    Sponsored

    AI & LLM Readiness

    F32/100
    Bot Access
    20/25
    Machine Read.
    3/25
    Schema Data
    0/25
    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
    nav
    Text ratio:2%
    Words:296
    Token eff.:Too Short
    Sections/1K:13.5
    Depth:1/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary20w
    Descriptive Headingsavg 10w
    Canonical URL
    Open Graph3/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (11)
    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
    71/100
    10
    Passed
    5
    Critical
    1
    Warnings
    Images & Alt Text
    15/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    12/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    12/15
    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
    8/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    4 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.
    22/100
    F
    433 mg
    CO₂e / view
    4.2 MB
    Page Weight
    15%
    Cleaner Than
    New Visitor
    495 mg
    vs
    Returning (cached)
    247 mg
    Annual (10K/mo)
    52.0 kg
    Emission Segments
    Data Center
    21 mg
    Network
    127 mg
    Device
    285 mg
    Resource Breakdown
    JavaScript
    113.4 KB
    Images
    546.3 KB
    CSS
    3.5 MB
    Fonts
    896 B
    HTML
    20.3 KB
    Green Hosting Verified
    Cloudflare
    GWF Verified
    6 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    0%Critical
    Critical / Transactional

    HTTPS

    WAF

    46d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Google Trust Services

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-256

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2+H3

    Valid From

    04.04.2026

    Valid Until

    03.07.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    18let.cz*.18let.cz

    SHA-256 Fingerprint

    5A:9C:D6:D6:B9:44:35:D4:D1:EA:C3:3F:AB:9B:1E:7B:4A:1F:5D:99...

    Top Recommendations

    Security recommendation preview

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    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-headers
    Content-Type, Access-Control-Allow-Headers, Authorization, X...
    access-control-allow-origin
    *
    access-control-max-age
    3600
    alt-svc
    h3=":443"; ma=86400
    cache-control
    🔴 No Cache(no-store, no-cache, must-revalidate, post-check=0, pre-check...)
    cf-cache-status
    DYNAMIC
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    20

    SPF
    DKIM
    DMARC

    MX Records (1)

    mx1.next.exon.io

    Domain Information

    18let.cz

    Domain Age
    6y 7m

    Created

    18.10.2019

    Expires

    17.10.2026

    Last Updated

    18.12.2024

    Registrar

    REG-GRANSY

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookiebot

    Cookie Consent Banner
    Cookiebot
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: Cookiebot
    Privacy policy page linked

    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.
    D
    54/100
    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, maximum-scale=1, user-scalable=no
    3 recommendations
    • •Mobile compatibility recommendation preview...
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    Typography & Readability

    Libre Franklin

    WCAG Partial
    76/100
    Readability
    /30
    23/30

    20px · LH 1.50

    Hierarchy
    /20
    15/20

    2.5x ratio · ✓ H1→H6

    WCAG
    /25
    16/25

    2.29:1 min contrast

    Performance
    /25
    22/25

    System fonts

    Heading Font

    Libre Franklin

    Sans50px

    Body Font

    Libre Franklin

    Sans20px

    Contrast Ratio

    2.29:1

    10 issues

    Reading Comfort

    ~32 CPL

    Narrow lines
    50px
    h1
    33px
    h2
    34px
    h3
    34px
    h4
    20px
    p

    ✅ Excellent readability: 20px body text is ideal for all devices.

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

    ✅ Easy to read: Flesch score 70/100 — accessible to general audiences.

    ⚠️ Partial contrast: 10 elements below WCAG AA threshold (min 2.3:1).

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

    ✅ Strong hierarchy: Headlines are 2.5x larger than body text.

    GGoogle FontsFlesch 70

    Color Palette

    15 unique colors
    2.49:1 Fail Light
    #ffffff
    Text· 13.9%
    #a3a694
    Secondary· 6.8%
    #6e3b21
    Primary· 9.1%
    #c4c6b4
    Secondary· 7.8%
    #afb9a8
    Secondary· 7.3%
    #190f11
    Secondary· 6.8%
    #a8836a
    Secondary· 5.8%
    #501817
    Accent· 5.7%

    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

    12 Resources

    7
    Scripts
    5
    Styles
    1
    Async
    1
    Defer

    Top Script Sources

    18let.cz(6)static.cloudflareinsights.com(1)

    Website Identity

    18let.cz

    6 years old
    Location detected: 🇨🇿 Czech Republicvia tld
    REG-GRANSY

    Sponsored

    Last analyzed: 18 May 2026 at 16:57

    Historical Analysis & Change Tracking