4977.cn

https://4977.cn· First analyzed 02 Jun 2026· Updated 02 Jun 2026

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4977.cn

Mobile

Sponsored

Hosting Provider

HongKong Service

IP Address

191.214.221.66

Site Location

🇨🇳 Chinavia tld

Server Location

🇭🇰 Mong Kok, Hong Kong

ASN

AS134175

Organization

HongKong Service

Server

Nginx

Nameservers

ns1.julydns.com.ns2.julydns.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.8 s10%

Speed Index

2.4 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

141 KB

122 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

Infrastructure

Hosting

HongKong Service

Technology Stack

5 Technologies Detected

CSS Frameworks

Libraries

UI Components

Web Servers

SEO Analysis

D57/100

Meta Tags13/15

Content8/12

Headings3/8

Technical15/25

E-E-A-T0/7

Images4/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

4977.cn4977.cn

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Title Length49 chars

Recommended: 50-60 chars (~303px / 580px)

Description Length104 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

621 URLs

robots.txt

7 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

navheader/footer

Text ratio:4%

Words:448

Token eff.:Optimal

Sections/1K:6.7

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary

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

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.

76/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

13/20

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

4/15

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

2 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.

58/100

A+

17 mg

CO₂e / view

140.8 KB

Page Weight

95%

Cleaner Than

New Visitor

20 mg

Returning (cached)

10 mg

Annual (10K/mo)

2.1 kg

Emission Segments

Data Center

4 mg

Network

4 mg

Device

9 mg

Resource Breakdown

JavaScript

92.8 KB

CSS

35.0 KB

HTML

12.7 KB

Other

320 B

Green Hosting Not Verified

HongKong Service

4 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

76%Good

Static / Informational

HTTPS

No WAF

82d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

25.05.2026

Valid Until

23.08.2026

Subject Alternative Names (2)

*.4977.cn4977.cn

SHA-256 Fingerprint

A8:41:9F:FF:D6:78:60:D9:8E:7D:1C:DC:96:FA:8E:23:D4:4D:A7:31...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Tue, 02 Jun 2026 09:48:33 GMT

etag

W/"6a1ea567-17fec"

last-modified

Tue, 02 Jun 2026 09:41:59 GMT

server

nginx

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

4977.cn

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.

54/100

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

width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no

3 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Helvetica Neue

WCAG AA

69/100

Readability

/30

21/30

12px · LH 1.50

Hierarchy

/20

6/20

WCAG

/25

22/25

5.14:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

Helvetica Neue

Sans

Body Font

Helvetica Neue

Sans12px

Contrast Ratio

5.14:1

WCAG AA (≥4.5:1)

Reading Comfort

~49 CPL

Optimal (45–75)

18px

24px

12px

Perfect Fourth

Scale

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

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

✅ Optimal line length: ~49 chars/line (ideal 45–75 CPL).

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.1:1).

❌ 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

2.12:1 Fail Light

#ffffff

Background· 79.60000000000002%

#aeb3b1

Other· 5.8%

#7a19f5

Primary· 8.4%

#832cf4

Accent· 1.4%

#6949a8

Secondary· 0.9%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

15 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(9)hm.baidu.com(1)zkbaishi.cqdyhb.cn(1)mobile.sjtyp.com(1)

Website Identity

4977.cn

Location detected: 🇨🇳 Chinavia tld

zh-CN

Sponsored

Last analyzed: 02 Jun 2026 at 09:49

Historical Analysis & Change Tracking