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lanzou.com

https://lanzou.com· First analyzed 30 Apr 2026· Updated 30 Apr 2026
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lanzou.com
Desktop screenshot of lanzou.com
Mobile screenshot of lanzou.com
Mobile

Sponsored

Hosting Provider

Alibaba Cloud
alibabacloud.com

IP Address

47.91.203.57

Site Location

🇭🇰 Hong Kongvia ip

Server Location

🇭🇰 Hong Kong, Hong Kong

ASN

AS45102

Organization

Alibaba Cloud - HK

Nameservers

ns2.dns.com.ns1.dns.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
365 ms10%
Speed Index
474 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
111 KB
12 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Alibaba Cloud

Technology Stack

1 Technologies Detected

Libraries

1
jQuery

SEO Analysis

F28/100
7
11
4
Meta Tags4/15
Content3/12
Headings0/8
Technical6/21
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile1/4
Indexability3/3
L
lanzou.comlanzou.com

蓝奏·云存储

No description available for this page.

Title Length6 chars

Recommended: 50-60 chars (~37px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (4)

  • • Missing meta description — important for click-through rates in SERPs
  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (1/1) — critical for accessibility and SEO

15 issues found

Upgrade to view details

Local SEO

Local Search Readiness

0/100
Poor
15 2

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

Sponsored

AI & LLM Readiness

F22/100
Bot Access
20/25
Machine Read.
1/25
Schema Data
0/25
Citation
1/25

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:6%
Words:78
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 (12)
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.
D
48/100
5
Passed
6
Critical
0
Warnings
Images & Alt Text
5/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
3/20
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
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.
4 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.
62/100
A+
14 mg
CO₂e / view
111.3 KB
Page Weight
95%
Cleaner Than
New Visitor
16 mg
vs
Returning (cached)
8 mg
Annual (10K/mo)
1.7 kg
Emission Segments
Data Center
3 mg
Network
3 mg
Device
7 mg
Resource Breakdown
JavaScript
18.2 KB
Images
19.1 KB
CSS
68.4 KB
HTML
5.6 KB
Green Hosting Not Verified
Alibaba Cloud
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

317d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

09.02.2026

Valid Until

13.03.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.lanzou.comlanzou.com

SHA-256 Fingerprint

C4:06:55:86:C6:91:BB:4D:AF:5C:70:48:9D:64:EB:D8:4D:9A:90:70...

Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-cache, must-revalidate)
content-encoding
📦 Gzip(gzip)
content-type
text/html
date
Thu, 30 Apr 2026 08:43:24 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

20

SPF
DKIM
DMARC

MX Records (1)

mx.ym.163.com

Domain Information

lanzou.com

Domain Age
15y 11m

Created

06.06.2010

Expires

06.06.2026

Last Updated

12.12.2025

Registrar

PDR Ltd. d/b/a PublicDomainRegistry.com

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.
F
29/100
Not Mobile Friendly
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.
4 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

arial

WCAG Partial
57/100
Readability
/30
12/30

12px · LH 1.67

Hierarchy
/20
9/20
WCAG
/25
16/25

1:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

arial

Body Font

arial

Sans12px

Contrast Ratio

1:1

31 issues

Reading Comfort

Single Family

left aligned
12px
p

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Partial contrast: 31 elements below WCAG AA threshold (min 1.0:1).

✅ System fonts: Zero font loading delay — best possible LCP impact.

Color Palette

7 unique colors
Light
#ffffff
Background· 46.300000000000004%
#ffcc33
Primary· 34.2%
#ffefc3
Accent· 9.3%
#85645b
Secondary· 4.5%
#e5debe
Secondary· 3.3%
#d9c063
Accent· 1.4%
#fcd861
Accent· 1.1%

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

2 Resources

2
Scripts
0
Styles
0
Async
0
Defer

Top Script Sources

includes(1)local(1)

Website Identity

lanzou.com

15 years old
Location detected: 🇭🇰 Hong Kongvia ip
PDR Ltd. d/b/a PublicDomainRegistry.com

Sponsored

Last analyzed: 30 Apr 2026 at 08:43

Historical Analysis & Change Tracking