ucas.ac.cn

https://ucas.ac.cn· First analyzed 29 Apr 2026· Updated 29 Apr 2026

Export

ucas.ac.cn

Mobile

Sponsored

Hosting Provider

CSTNET

IP Address

124.16.77.5

Site Location

🇨🇳 Chinavia tld

Server Location

🇨🇳 Chaowai, China

ASN

AS7497

Organization

CSTNET

Nameservers

gsns.gscas.ac.cn.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

682 ms10%

Speed Index

887 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

957 KB

153 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

CSTNET

Technology Stack

4 Technologies Detected

UI Components

Swiper Slick Carousel

Libraries

jQuery

CSS Frameworks

Tailwind CSS

SEO Analysis

D48/100

Meta Tags4/15

Content12/12

Headings1/8

Technical9/21

E-E-A-T3/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

ucas.ac.cnucas.ac.cn

中国科学院大学

No description available for this page.

Title Length7 chars

Recommended: 50-60 chars (~43px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description — important for click-through rates in SERPs
• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (127/127) — critical for accessibility and SEO

12 issues found

Upgrade to view details

Local SEO

Local Search Readiness

8/100

Poor

2 13 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.

10/25

Schema Data

0/25

Citation

1/25

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. listsnav

Text ratio:4%

Words:704

Token eff.:Optimal

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.

49/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

10/20

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...

Upgrade to view recommendations

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.

38/100

118 mg

CO₂e / view

957.3 KB

Page Weight

70%

Cleaner Than

New Visitor

135 mg

Returning (cached)

68 mg

Annual (10K/mo)

14.2 kg

Emission Segments

Data Center

26 mg

Network

28 mg

Device

64 mg

Resource Breakdown

JavaScript

622 B

CSS

956.4 KB

HTML

300 B

Green Hosting Not Verified

CSTNET

4 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

21%Critical

Interactive

HTTPS

No WAF

255d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

09.12.2025

Valid Until

10.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (5)

ucas.ac.cnwww.ucas.ac.cn*.ucas.ac.cn*.ucas.edu.cnucas.edu.cn

SHA-256 Fingerprint

C8:6C:36:C2:30:55:2E:C5:3D:C7:04:DE:B9:59:56:93:71:C2:D2:A9...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

connection

keep-alive

content-length

122237

content-type

text/html

date

Wed, 29 Apr 2026 21:09:54 GMT

etag

"69f23dae-1dd7d"

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mx.cstnet.cn

Domain Information

ucas.ac.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.

45/100

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=1.0,minimum-scale=1.0, maximum-scale=1.0

4 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG Partial

58/100

Readability

/30

14/30

14px · LH 1.14

Hierarchy

/20

7/20

WCAG

/25

16/25

1:1 min contrast

Performance

/25

21/25

System fonts

Heading Font

-apple-system

Sans

Body Font

-apple-system

Sans14px

Contrast Ratio

1:1

17 issues

Reading Comfort

Single Font Family

left aligned

36px

14px

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

⚠️ Tight line spacing (1.14). Increase to 1.4–1.6 for better readability.

⚠️ Partial contrast: 17 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

8 unique colors

Light

#8c1e24

Primary· 46.599999999999994%

#923541

Secondary· 15.5%

#a54348

Secondary· 7.6%

#b25b61

Secondary· 6.5%

#b98385

Secondary· 6.4%

#eedecf

Secondary· 6.1%

#611417

Accent· 5.6%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

js(9)local(5)g_style(2)

Website Identity

ucas.ac.cn

Location detected: 🇨🇳 Chinavia tld

Sponsored

Last analyzed: 29 Apr 2026 at 21:10

Historical Analysis & Change Tracking