dbdxjjw.com

https://dbdxjjw.com· First analyzed 10 May 2026· Updated 10 May 2026

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dbdxjjw.com

Mobile

Sponsored

Hosting Provider

Chengdu west dimension digital technology Co., LTD

IP Address

211.149.161.160

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Haidian, China

ASN

AS38283

Organization

Chengdu west dimension digital technology Co., LTD

Server

wits/1.17

Nameservers

ns1.myhostadmin.net.ns4.myhostadmin.net.ns3.myhostadmin.net.ns2.myhostadmin.net.+2 more

Performance

Core Web Vitals

Weight

First Contentful Paint

2.7 s10%

Speed Index

3.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

832 KB

40 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Chengdu west dimension digital technology Co., LTD

SEO Analysis

D47/100

Meta Tags8/15

Content10/12

Headings0/8

Technical11/25

E-E-A-T0/7

Images4/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

dbdxjjw.comdbdxjjw.com

★沈阳家教网【东北大学家教中心】沈阳最知名的家教中心

东北大学家教中心是沈阳最知名的家教中心。是东北大学在校大学生自发创办的大学生勤工俭学服务网站，立志于为东北大学生在校大学生提供优质的家教信息服务。为沈阳市民提供包含数学家教、英语家教在内的中小学家教服务。

Title Length26 chars

Recommended: 50-60 chars (~161px / 580px)

Description Length102 chars

Recommended: 120-160 chars

Issues (1)

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

14 issues found

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Crawlability

Sitemap

Type: standard

2,416 URLs

robots.txt

2 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

F31/100

Bot Access

20/25

Machine Read.

7/25

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

Text ratio:5%

Words:518

Token eff.:Optimal

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...

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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.

39/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

3/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

0/15

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

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.

40/100

103 mg

CO₂e / view

832.3 KB

Page Weight

80%

Cleaner Than

New Visitor

118 mg

Returning (cached)

59 mg

Annual (10K/mo)

12.3 kg

Emission Segments

Data Center

23 mg

Network

25 mg

Device

55 mg

Resource Breakdown

JavaScript

97.1 KB

Images

642.7 KB

CSS

69.7 KB

HTML

22.8 KB

Green Hosting Not Verified

Chengdu west dimension digital technology Co., LTD

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Unizeto Technologies S.A.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

17.04.2025

Valid Until

17.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.dbdxjjw.comdbdxjjw.com

SHA-256 Fingerprint

F9:86:DD:53:22:92:4C:CE:86:73:F1:43:E4:9E:65:E5:33:C5:C7:64...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟣 Private(private)

content-encoding

📦 Gzip(gzip)

content-length

23008

content-type

text/html

date

Sun, 10 May 2026 22:33:36 GMT

server

wits/1.17

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

dbdxjjw.com

Domain Age

9y 7m

Created

05.10.2016

Expires

05.10.2026

Last Updated

06.09.2025

Registrar

Xin Net Technology Corporation

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.

39/100

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=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, viewport-fit=cover

4 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

微软雅黑

WCAG Partial

49/100

Readability

/30

11/30

12px · LH 2.08

Hierarchy

/20

10/20

WCAG

/25

14/25

1:1 min contrast

Performance

/25

14/25

1 font

Heading Font

微软雅黑

Body Font

微软雅黑

Sans12px

Contrast Ratio

1:1

6 issues

Reading Comfort

Single Family

left aligned

12px

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

⚠️ Wide line spacing (2.08). 1.4–1.6 is optimal for body text.

⚠️ Partial contrast: 6 elements below WCAG AA threshold (min 1.0:1).

✅ Lean font stack: 1 font families keeps load times fast.

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

Buy on MyFonts

Color Palette

7 unique colors

Light

#ffffff

Background· 59.599999999999994%

#ffffc9

Primary· 10.2%

#a38f85

Secondary· 5.5%

#723a3e

Secondary· 5.1%

#ded0bf

Secondary· 5%

#b6c2c3

Secondary· 4.9%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

9 Resources

Scripts

Styles

Async

Defer

Top Script Sources

Ad(4)JS(1)local(1)bdimg.share.baidu.com(1)

Website Identity

dbdxjjw.com

9 years old

Location detected: 🇨🇳 Chinavia ip

Xin Net Technology Corporation

Sponsored

Last analyzed: 10 May 2026 at 22:34

Historical Analysis & Change Tracking