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letz.kr

https://letz.kr· First analyzed 18 May 2026· Updated 18 May 2026
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letz.kr
Desktop screenshot of letz.kr
Mobile screenshot of letz.kr
Mobile

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Hosting Provider

CORPORATION

IP Address

182.163.228.6

Site Location

🇰🇷 South Koreavia tld

Server Location

🇰🇷 Incheon, South Korea

ASN

AS38701

Organization

CORPORATION

Server

Nginx

Nameservers

ns1.hosting.co.kr.ns4.hosting.co.kr.ns2.hosting.co.kr.ns3.hosting.co.kr.

Performance

84

Core Web Vitals

Weight

First Contentful Paint
1.9 s10%
Speed Index
2.4 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2 MB
61 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
Infrastructure
Hosting
CORPORATION

Technology Stack

5 Technologies Detected

CSS Frameworks

2
Bootstrap
Tailwind CSS

Icon Libraries

1
Font Awesome

Analytics

1
Google Analytics

Web Servers

1
Nginxv1.18.0

SEO Analysis

C61/100
17
7
0
Meta Tags5/15
Content11/12
Headings6/8
Technical16/25
E-E-A-T0/7
Images2/7
Links4/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
L
letz.krletz.kr

URL 단축 서비스

URL 단축 서비스를 제공합니다.

Title Length10 chars

Recommended: 50-60 chars (~62px / 580px)

Description Length18 chars

Recommended: 120-160 chars

Issues (0)

    7 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    3 URLs

    3 sub-sitemaps

    robots.txt

    Local SEO

    Local Search Readiness

    6/100
    Poor
    2 13 2

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

    Sponsored

    AI & LLM Readiness

    D40/100
    Bot Access
    20/25
    Machine Read.
    11/25
    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
    header/footer
    Text ratio:9%
    Words:1,059
    Token eff.:Optimal
    Sections/1K:17
    Depth:1/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary16w
    Descriptive Headingsavg 2.7w
    Canonical URL
    Open Graph2/3
    Twitter Card3/3
    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.
    C
    68/100
    8
    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
    13/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    10/15
    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
    6/15
    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.
    30/100
    D
    250 mg
    CO₂e / view
    2.0 MB
    Page Weight
    50%
    Cleaner Than
    New Visitor
    286 mg
    vs
    Returning (cached)
    143 mg
    Annual (10K/mo)
    30.0 kg
    Emission Segments
    Data Center
    56 mg
    Network
    60 mg
    Device
    134 mg
    Resource Breakdown
    JavaScript
    212.8 KB
    Images
    1.2 MB
    CSS
    605.5 KB
    HTML
    17.9 KB
    Green Hosting Not Verified
    CORPORATION
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    D

    Security Score

    41%Poor
    Interactive

    HTTPS

    No WAF

    53d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/1.1

    Valid From

    12.04.2026

    Valid Until

    11.07.2026

    Subject Alternative Names (2)

    letz.krwww.letz.kr

    SHA-256 Fingerprint

    AD:27:2E:B2:61:CE:70:71:76:DD:C1:9E:A6:57:E5:99:5A:69:99:00...

    Top Recommendations

    Security recommendation preview

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    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🔴 No Cache(no-store, no-cache, must-revalidate)
    connection
    keep-alive
    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html; charset=UTF-8
    date
    Mon, 18 May 2026 17:00:43 GMT
    expires
    Thu, 19 Nov 1981 08:52:00 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    0

    SPF
    DKIM
    DMARC

    Domain Information

    letz.kr

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected

    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, shrink-to-fit=no
    2 recommendations
    • •Mobile compatibility recommendation preview...
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    Typography & Readability

    Nunito Sans

    WCAG Partial
    67/100
    Readability
    /30
    25/30

    18px · LH 1.70

    Hierarchy
    /20
    17/20

    3.04x ratio

    WCAG
    /25
    12/25

    1:1 min contrast

    Performance
    /25
    13/25

    1 font · 5 req

    Heading Font

    Nunito Sans

    Sans56px

    Body Font

    Nunito Sans

    Sans18px

    Contrast Ratio

    1:1

    10 issues

    Reading Comfort

    ~34 CPL

    Narrow lines
    56px
    h1
    48px
    h2
    28px
    h3
    24px
    h4
    18px
    p

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

    ⚠️ Partial contrast: 10 elements below WCAG AA threshold (min 1.0:1).

    ⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

    ✅ Strong hierarchy: Headlines are 3.0x larger than body text.

    ❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

    ✅ Lean font stack: 1 font families keeps load times fast.

    Buy on MyFontsFlesch 53

    Color Palette

    8 unique colors
    Light
    #ffffff
    Background· 85.5%
    #3dacf6
    Primary· 5.1%
    #ecf2f5
    Secondary· 2%
    #4ec2f9
    Accent· 1.7%
    #9dcae2
    Accent· 1.7%
    #d4d8dc
    Border· 1.7%
    #48759d
    Secondary· 1.6%
    #6dafdb
    Accent· 0.6%

    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

    9 Resources

    6
    Scripts
    3
    Styles
    1
    Async
    0
    Defer

    Top Script Sources

    letz.kr(5)googletagmanager.com(1)

    Website Identity

    letz.kr

    Location detected: 🇰🇷 South Koreavia tld
    en

    Sponsored

    Last analyzed: 18 May 2026 at 17:01

    Historical Analysis & Change Tracking