yisu.com

https://yisu.com· First analyzed 07 May 2026· Updated 07 May 2026

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yisu.com

Mobile

Sponsored

Hosting Provider

Ningbo Zhuo Zhi Innovation Network Technology Co., Ltd

IP Address

110.42.6.249

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Ningbo, China

ASN

AS56041

Organization

Ningbo Zhuo Zhi Innovation Network Technology Co., Ltd

Server

Tengine

CDN

Nameservers

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

Performance

Core Web Vitals

Weight

First Contentful Paint

3.7 s10%

Speed Index

4.8 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

6.2 MB

194 requests

Image Optimization

Lazy LoadWebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Ningbo Zhuo Zhi Innovation Network Technology Co., Ltd

CDN

Technology Stack

7 Technologies Detected

Libraries

Analytics

CSS Frameworks

Tag Managers

Web Servers

SEO Analysis

D52/100

Meta Tags10/15

Content12/12

Headings3/8

Technical8/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

yisu.comyisu.com

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Title Length32 chars

Recommended: 50-60 chars (~198px / 580px)

Description Length80 chars

Recommended: 120-160 chars

Issues (3)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (177/180) — critical for accessibility and SEO
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

12 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

222 URLs

222 sub-sitemaps

robots.txt

15 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

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.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

def. lists

Text ratio:5%

Words:977

Token eff.:Optimal

Sections/1K:8.2

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary12w

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...

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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.

53/100

Passed

Critical

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

5/15

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

5/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

9/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

5 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.

16/100

790 mg

CO₂e / view

6.2 MB

Page Weight

Cleaner Than

New Visitor

903 mg

Returning (cached)

452 mg

Annual (10K/mo)

94.8 kg

Emission Segments

Data Center

177 mg

Network

190 mg

Device

424 mg

Resource Breakdown

JavaScript

571.2 KB

Images

3.6 MB

CSS

1.9 MB

HTML

173.7 KB

Other

1.4 KB

Green Hosting Not Verified

Ningbo Zhuo Zhi Innovation Network Technology Co., Ltd

9 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

98d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

24.07.2025

Valid Until

13.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.yisu.comyisu.com

SHA-256 Fingerprint

28:F6:AE:0C:53:8B:AD:E5:CF:3E:CE:FA:0D:BD:49:37:99:09:74:31...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

1969

ali-swift-global-savetime

1778122177

content-length

177548

content-type

text/html; charset=UTF-8

date

Thu, 07 May 2026 02:49:18 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mxbiz2.qq.com

mxbiz1.qq.com

Domain Information

yisu.com

Domain Age

25y 2m

Created

22.02.2001

Expires

22.02.2031

Last Updated

09.10.2024

Registrar

Alibaba Cloud Computing Ltd. d/b/a HiChina (www.net.cn)

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

33/100

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.

4 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Helvetica Neue

WCAG Partial

57/100

Readability

/30

13/30

14px · LH 1.86

Hierarchy

/20

8/20

WCAG

/25

16/25

1:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

Helvetica Neue

Sans

Body Font

Helvetica Neue

Sans14px

Contrast Ratio

1:1

18 issues

Reading Comfort

~95 CPL

Wide lines

35px

18px

14px

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

⚠️ Wide line spacing (1.86). 1.4–1.6 is optimal for body text.

⚠️ Wide lines: ~95 chars/line. Use max-width: 65ch for comfortable reading.

⚠️ Partial contrast: 18 elements below WCAG AA threshold (min 1.0:1).

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

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

Color Palette

6 unique colors

4.47:1 AA Large Light

#ffffff

Background· 31.8%

#6a7c69

Secondary· 4%

#0a061b

Primary· 39.3%

#081c25

Accent· 11.5%

#073331

Accent· 11%

#d7f0d9

Secondary· 2.3000000000000003%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

29 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cache.yisu.com(12)googletagmanager.com(3)google-analytics.com(1)hm.baidu.com(1)assets.growingio.com(1)

Website Identity

yisu.com

25 years old

Location detected: 🇨🇳 Chinavia ip

Alibaba Cloud Computing Ltd. d/b/a HiChina (www.net.cn)

Sponsored

Last analyzed: 07 May 2026 at 03:23

Historical Analysis & Change Tracking