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lesso.com

https://lesso.com· First analyzed 15 May 2026· Updated 15 May 2026
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lesso.com
Desktop screenshot of lesso.com
Mobile screenshot of lesso.com
Mobile

Sponsored

Hosting Provider

Huawei Public Cloud Service

IP Address

116.205.226.168

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Guangzhou, China

ASN

AS55990

Organization

Huawei Public Cloud Service

Server

Nginx

Nameservers

vip3.alidns.com.vip4.alidns.com.

Performance

77

Core Web Vitals

Weight

First Contentful Paint
2.6 s10%
Speed Index
3.4 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
7.5 MB
94 requests

Image Optimization

WebP
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Huawei Public Cloud Service

Technology Stack

5 Technologies Detected

Other

2
GSAPAOS (Animate On Scroll)

Libraries

1
jQuery

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Nginx

SEO Analysis

D55/100
16
10
0
Meta Tags7/15
Content7/12
Headings4/8
Technical14/25
E-E-A-T3/7
Images3/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
L
lesso.comlesso.com

LESSO联塑_联塑集团-中国联塑官方网站

LESSO联塑集团是国内大型建材家居产业集团，业务涵盖管道、建材家居、环保、新能源等板块，提供市政工程、家装给排水、能源管理等场景的优质产品与服务，为居者构筑轻松生活。

Title Length21 chars

Recommended: 50-60 chars (~133px / 580px)

Description Length84 chars

Recommended: 120-160 chars

Issues (0)

    10 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    268 URLs

    robots.txt

    8 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    5/100
    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

    F31/100
    Bot Access
    20/25
    Machine Read.
    6/25
    Schema Data
    0/25
    Citation
    5/25

    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
    Text ratio:3%
    Words:287
    Token eff.:Too Short

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary
    Descriptive Headings
    Canonical URL
    Open Graph0/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (10)
    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
    62/100
    9
    Passed
    5
    Critical
    2
    Warnings
    Images & Alt Text
    10/20
    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
    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
    7/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    5 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.
    14/100
    F
    954 mg
    CO₂e / view
    7.5 MB
    Page Weight
    5%
    Cleaner Than
    New Visitor
    1.09 g
    vs
    Returning (cached)
    545 mg
    Annual (10K/mo)
    114.4 kg
    Emission Segments
    Data Center
    213 mg
    Network
    229 mg
    Device
    512 mg
    Resource Breakdown
    JavaScript
    187.9 KB
    Images
    5.6 MB
    CSS
    1.7 MB
    HTML
    14.2 KB
    Green Hosting Not Verified
    Huawei Public Cloud Service
    8 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    36%Critical
    Interactive

    HTTPS

    No WAF

    252d

    Certificate Details

    Type

    Organization Validated (OV)

    Certificate Authority

    UniTrust

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2+H3

    Valid From

    22.12.2025

    Valid Until

    22.01.2027

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    *.lesso.comlesso.com

    SHA-256 Fingerprint

    08:2D:E8:E8:31:50:42:9D:5D:E5:D7:9F:14:98:FB:DE:35:E9:87:19...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    alt-svc
    quic=":443"; h3=":443"; h3-29=":443"; h3-27=":443";h3-25=":4...
    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html; charset=utf-8
    date
    Fri, 15 May 2026 00:51:43 GMT
    server
    nginx
    strict-transport-security
    max-age=31536000
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    98

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (2)

    qiye163mx02.mxmail.netease.com
    qiye163mx01.mxmail.netease.com

    Domain Information

    lesso.com

    Domain Age
    17y 10m

    Created

    28.06.2008

    Expires

    28.06.2027

    Last Updated

    30.04.2025

    Registrar

    Alibaba Cloud Computing (Beijing) Co., Ltd.

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    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.
    D
    49/100
    Not 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...
    Upgrade to view recommendations

    Typography & Readability

    Helvetica Neue + HYQiHei-50S

    WCAG Partial
    56/100
    Readability
    /30
    9/30

    11px · LH 2.25

    Hierarchy
    /20
    17/20

    5.25x ratio

    WCAG
    /25
    12/25

    1:1 min contrast

    Performance
    /25
    18/25

    System fonts

    Heading Font

    Helvetica Neue

    Sans56px

    Body Font

    HYQiHei-50S

    Sans11px

    Contrast Ratio

    1:1

    9 issues

    Reading Comfort

    ~46 CPL

    Optimal (45–75)
    56px
    h1
    11px
    p

    ❌ Critical: 11px body text is too small. Minimum 14px, recommend 16px+.

    ⚠️ Wide line spacing (2.25). 1.4–1.6 is optimal for body text.

    ✅ Optimal line length: ~46 chars/line (ideal 45–75 CPL).

    ❌ Very complex text: Flesch score 24/100. Consider shorter sentences and simpler words.

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

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

    Flesch 24

    Color Palette

    6 unique colors
    12.21:1 AAA Dark
    #353531
    Text· 23.4%
    #fefefe
    Text· 8.5%
    #0d1410
    Secondary· 51.30000000000001%
    #1f241c
    Secondary· 12.399999999999999%
    #020404
    Primary· 3.9%

    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

    16 Resources

    8
    Scripts
    8
    Styles
    2
    Async
    0
    Defer

    Top Script Sources

    local(4)turing.captcha.gtimg.com(2)hm.baidu.com(1)turing.captcha.qcloud.com(1)

    Website Identity

    lesso.com

    lessoppgl@lesso.com
    17 years old
    Location detected: 🇨🇳 Chinavia ip
    Alibaba Cloud Computing (Beijing) Co., Ltd.

    Sponsored

    Last analyzed: 15 May 2026 at 00:51

    Historical Analysis & Change Tracking