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upc.edu.cn

https://upc.edu.cn· First analyzed 30 Apr 2026· Updated 30 Apr 2026
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upc.edu.cn
Desktop screenshot of upc.edu.cn
Mobile screenshot of upc.edu.cn
Mobile

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Hosting Provider

CERNET

IP Address

121.251.249.56

Site Location

🇨🇳 Chinavia tld

Server Location

🇨🇳 Nanjing, China

ASN

AS132553

Server

**********

Nameservers

dns1.upc.edu.cn.dns2.upc.edu.cn.

Performance

84

Core Web Vitals

Weight

First Contentful Paint
1.9 s10%
Speed Index
2.4 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
19.1 MB
83 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
CERNET

Technology Stack

2 Technologies Detected

Libraries

1
jQuery

CSS Frameworks

1
Tailwind CSS

SEO Analysis

F39/100
12
8
4
Meta Tags4/15
Content10/12
Headings1/8
Technical8/21
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile2/4
Indexability3/3
U
upc.edu.cnupc.edu.cn

中国石油大学

No description available for this page.

Title Length6 chars

Recommended: 50-60 chars (~37px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (4)

  • • 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 (63/63) — critical for accessibility and SEO

12 issues found

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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.

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AI & LLM Readiness

F25/100
Bot Access
20/25
Machine Read.
2/25
Schema Data
0/25
Citation
3/25

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
header/footer
Text ratio:4%
Words:264
Token eff.:Too Short
Sections/1K:45.5
Depth:1/5

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...
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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.
C
67/100
9
Passed
5
Critical
2
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
11/20
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
7/15
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.
17/100
F
2.41 g
CO₂e / view
19.1 MB
Page Weight
5%
Cleaner Than
New Visitor
2.76 g
vs
Returning (cached)
1.38 g
Annual (10K/mo)
289.7 kg
Emission Segments
Data Center
539 mg
Network
579 mg
Device
1.30 g
Resource Breakdown
JavaScript
208.8 KB
Images
18.6 MB
CSS
212.5 KB
HTML
9.8 KB
Green Hosting Not Verified
CERNET
6 recommendations
  • •Carbon footprint recommendation preview...
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F

Security Score

31%Critical
Interactive

HTTPS

No WAF

72d

Certificate Details

Type

Organization Validated (OV)

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

10.06.2025

Valid Until

11.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.upc.edu.cnupc.edu.cn

SHA-256 Fingerprint

C2:37:D1:72:55:B6:29:57:56:01:72:FB:FD:E7:78:38:7D:80:63:9A...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges
bytes
cache-control
🟡 600s(private, max-age=600)
connection
Upgrade
content-encoding
📦 Gzip(gzip)
content-language
zh-CN
content-length
9732
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (2)

mxbiz1.qq.com
mxbiz2.qq.com

Domain Information

upc.edu.cn

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

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.
F
35/100
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.
4 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Arial

WCAG Partial
58/100
Readability
/30
17/30

16px · LH 1.35

Hierarchy
/20
6/20
WCAG
/25
14/25

1.23:1 min contrast

Performance
/25
21/25

System fonts

Heading Font

Arial

Sans

Body Font

Arial

Sans16px

Contrast Ratio

1.23:1

9 issues

Reading Comfort

~156 CPL

Too wide
24px
h3
18px
h4
16px
p

✅ Excellent readability: 16px body text is ideal for all devices.

⚠️ Tight line spacing (1.35). Increase to 1.4–1.6 for better readability.

❌ Very long lines: ~156 chars/line causes eye strain. Add max-width constraint.

⚠️ Partial contrast: 9 elements below WCAG AA threshold (min 1.2:1).

❌ 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
#ffffff
Background· 44.699999999999996%
#174078
Primary· 16.900000000000002%
#ddfbcc
Accent· 9%
#ebfce8
Accent· 8.600000000000001%
#a4cdc2
Secondary· 6%
#beede4
Accent· 5.3%
#678883
Secondary· 5.2%

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Scripts & Styles

20 Resources

15
Scripts
5
Styles
0
Async
0
Defer

Top Script Sources

local(8)jsx(6)_sitegray(1)

Website Identity

upc.edu.cn

Location detected: 🇨🇳 Chinavia tld
zh-cn

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Last analyzed: 30 Apr 2026 at 15:48

Historical Analysis & Change Tracking