bookschina.com

https://bookschina.com· First analyzed 11 May 2026· Updated 11 May 2026

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bookschina.com

Mobile

Sponsored

Hosting Provider

21ViaNet

IP Address

59.151.36.162

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Chaowai, China

ASN

AS56048

Organization

21ViaNet

Server

Nginx

Nameservers

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

Performance

Core Web Vitals

Weight

First Contentful Paint

2.5 s10%

Speed Index

3.2 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.1 MB

126 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

21ViaNet

Technology Stack

4 Technologies Detected

Libraries

CSS Frameworks

Web Servers

Frameworks

SEO Analysis

D52/100

Meta Tags7/15

Content11/12

Headings3/8

Technical9/25

E-E-A-T0/7

Images5/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

bookschina.combookschina.com

中图网：网上书店，尾货特色书店，5万种特价书低至2折！

中图网：网上书店，创办于1998年，通过好书推荐、畅销书、淘书团、特色专题等栏目及各种促销活动，致力于为读者提供价廉物美的正版优质书籍，是爱书人的淘书圣地。

Title Length27 chars

Recommended: 50-60 chars (~167px / 580px)

Description Length78 chars

Recommended: 120-160 chars

Issues (1)

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

13 issues found

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Crawlability

Sitemap

robots.txt

23 rules

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

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:7%

Words:2,470

Token eff.:Optimal

Sections/1K:19.4

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary10w

Descriptive Headingsavg 1.1w

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.

54/100

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

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...

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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.

31/100

264 mg

CO₂e / view

2.1 MB

Page Weight

50%

Cleaner Than

New Visitor

302 mg

Returning (cached)

151 mg

Annual (10K/mo)

31.7 kg

Emission Segments

Data Center

59 mg

Network

63 mg

Device

142 mg

Resource Breakdown

JavaScript

172.7 KB

Images

1.7 MB

CSS

171.5 KB

HTML

46.7 KB

Other

2.5 KB

Green Hosting Not Verified

21ViaNet

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

61%Fair

Interactive

HTTPS

No WAF

152d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

WoTrus CA Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

26.03.2026

Valid Until

10.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.bookschina.combookschina.com

SHA-256 Fingerprint

75:20:73:9E:50:DC:AA:F8:05:5E:F0:A7:71:32:B5:65:6D:8F:6F:A0...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=gb2312

date

Mon, 11 May 2026 02:30:30 GMT

etag

W/"74a0fa87e9dddc1:0"

last-modified

Thu, 07 May 2026 06:19:59 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mxbiz1.qq.com

mxbiz2.qq.com

Domain Information

bookschina.com

Domain Age

26y 5m

Created

16.12.1999

Expires

16.12.2027

Last Updated

09.12.2025

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

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.

46/100

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.

Viewport

width=1200

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Microsoft YaHei + 宋体

WCAG Partial

38/100

Readability

/30

8/30

12px · LH 2.00

Hierarchy

/20

7/20

WCAG

/25

13/25

2.85:1 min contrast

Performance

/25

10/25

3 fonts

Heading Font

Microsoft YaHei

Sans

Body Font

宋体

Sans12px

Contrast Ratio

2.85:1

7 issues

Reading Comfort

~85 CPL

Wide lines

20px

16px

12px

Perfect Fourth

Scale

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

⚠️ Wide line spacing (2.00). 1.4–1.6 is optimal for body text.

⚠️ Wide lines: ~85 chars/line. Use max-width: 65ch for comfortable reading.

⚠️ Partial contrast: 7 elements below WCAG AA threshold (min 2.9:1).

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

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFonts

Color Palette

9 unique colors

3.72:1 AA Large Light

#ffffff

Background· 42.1%

#938080

Secondary· 2%

#fef5e4

Primary· 19%

#bb7f61

Secondary· 14.5%

#e0cbc4

Secondary· 4.9%

#f8d7b6

Accent· 4.6%

#66423f

Secondary· 4.5%

#d74737

Accent· 3.5%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

19 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(10)chat.sobot.com(3)hm.baidu.com(1)..(1)

Website Identity

bookschina.com

26 years old

Location detected: 🇨🇳 Chinavia ip

Alibaba Cloud Computing (Beijing) Co., Ltd.

Sponsored

Last analyzed: 11 May 2026 at 02:31

Historical Analysis & Change Tracking