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youlai.cn

https://youlai.cn· First analyzed 27 May 2026· Updated 27 May 2026
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youlai.cn
Desktop screenshot of youlai.cn
Mobile screenshot of youlai.cn
Mobile

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Hosting Provider

China Mobile Communications Corporation

IP Address

36.156.81.209

Site Location

🇨🇳 Chinavia tld

Server Location

🇨🇳 Nanjing, China

ASN

AS56046

Organization

China Mobile Communications Corporation

Server

Nginx

CDN

CDN

Performance

75

Core Web Vitals

Weight

First Contentful Paint
3.4 s10%
Speed Index
4.4 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
54 KB
233 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
China Mobile Communications Corporation
CDN
CDN

Technology Stack

3 Technologies Detected

Libraries

1
jQuery

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Nginx

SEO Analysis

D44/100
10
13
3
Meta Tags7/15
Content12/12
Headings3/8
Technical7/25
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile1/4
Indexability3/3
Y
youlai.cnyoulai.cn

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Title Length20 chars

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

Description Length88 chars

Recommended: 120-160 chars

Issues (3)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (146/276) — critical for accessibility and SEO
  • • Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

16 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

4 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.
8/25
Schema Data
0/25
Citation
4/25

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
def. lists
Text ratio:5%
Words:2,255
Token eff.:Optimal
Sections/1K:0.4
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary13w
Descriptive Headingsavg 1w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (12)
AI readiness recommendation preview...
Upgrade to view recommendations

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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.
D
54/100
5
Passed
7
Critical
1
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
4/20
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
1/15
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.
47/100
A+
7 mg
CO₂e / view
54.1 KB
Page Weight
95%
Cleaner Than
New Visitor
8 mg
vs
Returning (cached)
4 mg
Annual (10K/mo)
804 g
Emission Segments
Data Center
2 mg
Network
2 mg
Device
4 mg
Resource Breakdown
HTML
42.9 KB
Other
11.2 KB
Green Hosting Not Verified
China Mobile Communications Corporation
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

261d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Zhejiang Xinya Network Technology Co., Ltd.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

12.01.2026

Valid Until

12.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.youlai.cnyoulai.cn

SHA-256 Fingerprint

76:7C:F7:78:E9:A5:AD:D2:74:70:BF:DD:64:6D:01:27:6E:15:F8:C3...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=UTF-8
date
Wed, 27 May 2026 17:34:21 GMT
server
nginx
vary
Accept-Encoding
x-cache
HIT from i1932519_c23621(cloudsvr)
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

20

SPF
DKIM
DMARC

MX Records (3)

mx1.qiye.aliyun.com
mx2.qiye.aliyun.com
mx3.qiye.aliyun.com

Domain Information

youlai.cn

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

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.
F
36/100
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.
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

microsoft yahei

WCAG Partial
54/100
Readability
/30
21/30

14px · LH 1.57

Hierarchy
/20
5/20
WCAG
/25
14/25

3.47:1 min contrast

Performance
/25
14/25

2 fonts

Heading Font

microsoft yahei

Sans

Body Font

microsoft yahei

Sans14px

Contrast Ratio

3.47:1

3 issues

Reading Comfort

~55 CPL

Optimal (45–75)
21px
h2
24px
h3
14px
h4
14px
p

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.57 ratio (ideal range 1.4–1.6).

✅ Optimal line length: ~55 chars/line (ideal 45–75 CPL).

⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 3.5:1).

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

⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

Buy on MyFontsFlesch 63

Color Palette

7 unique colors
6.39:1 AA Light
#ffffff
Background· 57.5%
#605d6e
Secondary· 4.9%
#e8dbc9
Primary· 19.2%
#bd8d70
Secondary· 6.9%
#debba0
Secondary· 3.3%
#f2ece6
Secondary· 2.5%

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

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Scripts & Styles

13 Resources

11
Scripts
2
Styles
1
Async
0
Defer

Top Script Sources

static.youlai.cn(9)hm.baidu.com(1)hm.youlai.cn(1)

Website Identity

youlai.cn

Location detected: 🇨🇳 Chinavia tld

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Last analyzed: 27 May 2026 at 17:35

Historical Analysis & Change Tracking