sandai.net

https://sandai.net· First analyzed 14 May 2026· Updated 14 May 2026

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sandai.net

Mobile

Sponsored

Hosting Provider

Alibaba Cloud

alibabacloud.com

IP Address

112.124.227.84

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Hangzhou, China

ASN

AS37963

Organization

Aliyun Computing Co., LTD

Server

OpenResty

Nameservers

ns4.xunlei.net.ns2.xunlei.net.ns3.xunlei.net.ns1.xunlei.net.+1 more

Performance

Core Web Vitals

Weight

First Contentful Paint

2.9 s10%

Speed Index

3.8 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

26.6 MB

71 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Alibaba Cloud

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

2 Technologies Detected

CSS Frameworks

Tailwind CSS

Web Servers

OpenResty

SEO Analysis

D41/100

Meta Tags7/15

Content6/12

Headings0/8

Technical13/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

sandai.netsandai.net

迅雷-构建全球最大的去中心化存储与传输网络

迅雷是一家全球领先的去中心化服务商，以技术构建商业，以服务创造共识，累计用户超4亿。面向个人和企业推出迅雷下载、迅雷云盘、迅雷影音、迅雷直播、迅雷会员、云计算、区块链等产品。

Title Length21 chars

Recommended: 50-60 chars (~130px / 580px)

Description Length87 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (34/41) — critical for accessibility and SEO

13 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

6 rules

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

F33/100

Bot Access

20/25

Machine Read.

8/25

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.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:2%

Words:154

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...

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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.

55/100

Passed

Critical

Warnings

Images & Alt Text

3/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

10/20

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

3/15

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.

12/100

3.37 g

CO₂e / view

26.6 MB

Page Weight

Cleaner Than

New Visitor

3.85 g

Returning (cached)

1.92 g

Annual (10K/mo)

403.9 kg

Emission Segments

Data Center

752 mg

Network

808 mg

Device

1.81 g

Resource Breakdown

JavaScript

762.1 KB

Images

14.5 MB

CSS

87.3 KB

HTML

6.9 KB

Other

11.2 MB

Green Hosting Not Verified

Alibaba Cloud

8 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

71%Good

Static / Informational

HTTPS

No WAF

32d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

14.05.2025

Valid Until

15.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.xunlei.comxunlei.com

SHA-256 Fingerprint

9D:CE:53:1C:87:46:BA:05:F3:28:6D:D0:99:B2:26:FB:59:C4:50:9C...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

167401

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-length

6800

content-type

text/html

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

sandai.net

Domain Age

23y 3m

Created

27.01.2003

Expires

27.01.2030

Last Updated

14.11.2022

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

59/100

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

user-scalable=no,initial-scale=1,maximum-scale=1,minimum-scale=1,width=device-width

3 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG Partial

64/100

Readability

/30

20/30

14px · LH 1.50

Hierarchy

/20

9/20

WCAG

/25

16/25

1:1 min contrast

Performance

/25

19/25

System fonts

Heading Font

-apple-system

Body Font

-apple-system

Sans14px

Contrast Ratio

1:1

25 issues

Reading Comfort

Single Family

left aligned

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

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

⚠️ Partial contrast: 25 elements below WCAG AA threshold (min 1.0:1).

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

Color Palette

6 unique colors

Light

#f0f7ff

Primary· 70.99999999999999%

#3974e9

Accent· 7.6%

#72a1ee

Accent· 5.9%

#dbe1f6

Accent· 5.9%

#4afefb

Accent· 5.1%

#6dd9f6

Accent· 4.4%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

11 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)hm.baidu.com(2)

Website Identity

sandai.net

23 years old

Location detected: 🇨🇳 Chinavia ip

Alibaba Cloud Computing (Beijing) Co., Ltd.en-us

Sponsored

Last analyzed: 14 May 2026 at 01:42

Historical Analysis & Change Tracking