tiaozhanbei.net

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

Export

tiaozhanbei.net

Mobile

Sponsored

Hosting Provider

Beijing CNISP Technology Co., Ltd.

IP Address

175.25.50.148

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Chaowai, China

ASN

AS56019

Server

Nginx

Nameservers

ns1.dnsv2.com.ns2.dnsv2.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

969 ms10%

Speed Index

1.3 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

5 MB

75 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

Alpine.js

Styling

Tailwind CSS

Infrastructure

Hosting

Beijing CNISP Technology Co., Ltd.

Technology Stack

6 Technologies Detected

Analytics

Frameworks

UI Components

CSS Frameworks

Web Servers

SEO Analysis

D47/100

Meta Tags11/15

Content4/12

Headings3/8

Technical10/21

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

tiaozhanbei.nettiaozhanbei.net

挑战杯全国大学生课外学术科技作品竞赛和创业计划大赛官方网站

“挑战杯”官方网站是主办单位开办的唯一官网。挑战杯竞赛由共青团中央、中国科协、教育部、全国学联和承办高校所在地人民政府联合主办，至今已经有20多年历史，是国内规模最大的大学生科技竞赛活动，被誉为当代大学生科技创新的“奥林匹克”盛会。

Title Length31 chars

Recommended: 50-60 chars (~192px / 580px)

Description Length116 chars

Recommended: 120-160 chars

Issues (1)

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

11 issues found

Upgrade to view details

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

F30/100

Bot Access

20/25

Machine Read.

4/25

Schema Data

0/25

Citation

6/25

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

nav

Text ratio:4%

Words:193

Token eff.:Too Short

Sections/1K:51.8

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary216w

Descriptive Headingsavg 1.2w

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...

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.

64/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

8/15

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

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.

14/100

635 mg

CO₂e / view

5.0 MB

Page Weight

15%

Cleaner Than

New Visitor

725 mg

Returning (cached)

363 mg

Annual (10K/mo)

76.2 kg

Emission Segments

Data Center

142 mg

Network

152 mg

Device

341 mg

Resource Breakdown

JavaScript

71.1 KB

Images

4.2 MB

CSS

706.5 KB

HTML

13.5 KB

Green Hosting Not Verified

Beijing CNISP Technology Co., Ltd.

7 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

183d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

10.11.2025

Valid Until

13.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.tiaozhanbei.nettiaozhanbei.net

SHA-256 Fingerprint

00:69:A8:AB:88:4B:24:18:07:1C:55:AE:CB:5B:C1:8C:22:51:E4:FF...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

cross-origin-opener-policy

same-origin

date

Thu, 14 May 2026 21:52:43 GMT

referrer-policy

same-origin

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mxbiz1.qq.com

mxbiz2.qq.com

Domain Information

tiaozhanbei.net

Domain Age

16y 1m

Created

10.04.2010

Expires

10.04.2029

Last Updated

06.10.2025

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

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.

60/100

Mobile Friendly

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

3 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Segoe UI

WCAG Partial

55/100

Readability

/30

9/30

12px · LH 1.67

Hierarchy

/20

8/20

WCAG

/25

18/25

1:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

Segoe UI

Sans

Body Font

Segoe UI

Sans12px

Contrast Ratio

1:1

1 issue

Reading Comfort

~118 CPL

Too wide

24px

20px

24px

12px

Minor Second

Scale

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

❌ Very long lines: ~118 chars/line causes eye strain. Add max-width constraint.

⚠️ Partial contrast: 1 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

11 unique colors

Light

#ffffff

Background· 15.4%

#1775c0

Primary· 25.799999999999997%

#e8f6fb

Accent· 12.6%

#86b4c3

Secondary· 7.6%

#2386b3

Accent· 6.9%

#3158b7

Accent· 6.7%

#3595ad

Accent· 6.5%

#49a9bf

Secondary· 5.5%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

6 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(4)googletagmanager.com(1)

Website Identity

tiaozhanbei.net

16 years old

Location detected: 🇨🇳 Chinavia ip

Alibaba Cloud Computing (Beijing) Co., Ltd.zh-CN

Sponsored

Last analyzed: 14 May 2026 at 21:53

Historical Analysis & Change Tracking

tiaozhanbei.net

挑战杯 全国大学生课外学术科技作品竞赛和创业计划大赛 官方网站

Accessibility

Carbon Footprint

Mobile Compatibility

Color Palette

tiaozhanbei.net

挑战杯全国大学生课外学术科技作品竞赛和创业计划大赛官方网站