sci99.com

https://sci99.com· First analyzed 13 May 2026· Updated 13 May 2026

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sci99.com

Mobile

Sponsored

Hosting Provider

Chinanet SD

IP Address

58.57.118.4

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Jinan, China

ASN

AS4134

Organization

Chinanet SD

Server

Nginx

CDN

Nameservers

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

Performance

Core Web Vitals

Weight

First Contentful Paint

1.5 s10%

Speed Index

2.0 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

65 KB

122 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Chinanet SD

CDN

Technology Stack

5 Technologies Detected

Libraries

Other

UI Components

CSS Frameworks

Web Servers

SEO Analysis

D46/100

Meta Tags7/15

Content10/12

Headings3/8

Technical10/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

sci99.comsci99.com

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Title Length20 chars

Recommended: 50-60 chars (~124px / 580px)

Description Length85 chars

Recommended: 120-160 chars

Issues (3)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (66/78) — critical for accessibility and SEO
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

16 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

14 rules

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

F30/100

Bot Access

20/25

Machine Read.

7/25

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

Text ratio:2%

Words:1,953

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.

47/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

6/20

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

11/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

0/15

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.

47/100

A+

8 mg

CO₂e / view

65.0 KB

Page Weight

95%

Cleaner Than

New Visitor

9 mg

Returning (cached)

5 mg

Annual (10K/mo)

960 g

Emission Segments

Data Center

2 mg

Network

2 mg

Device

4 mg

Resource Breakdown

HTML

41.3 KB

Other

23.7 KB

Green Hosting Not Verified

Chinanet SD

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

185d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

WoTrus CA Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

14.10.2025

Valid Until

14.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.sci99.comsci99.com

SHA-256 Fingerprint

7F:87:51:92:F0:45:90:D7:39:DC:D5:55:72:62:4D:87:EE:18:3F:52...

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

date

Wed, 13 May 2026 18:40:43 GMT

server

nginx

transfer-encoding

chunked

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (4)

mail.biz-email.net

cdn.corpemail.net

cnc.biz-email.net

cdn.corp-email.cn

Domain Information

sci99.com

Domain Age

18y 1m

Created

19.03.2008

Expires

19.03.2029

Last Updated

05.12.2025

Registrar

Xin Net Technology Corporation

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

3 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

微软雅黑

WCAG Partial

54/100

Readability

/30

19/30

14px · LH 1.64

Hierarchy

/20

7/20

WCAG

/25

14/25

1:1 min contrast

Performance

/25

14/25

1 font

Heading Font

微软雅黑

Sans

Body Font

微软雅黑

Sans14px

Contrast Ratio

1:1

20 issues

Reading Comfort

~43 CPL

Narrow lines

31px

20px

14px

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

✅ Easy to read: Flesch score 100/100 — accessible to general audiences.

⚠️ Partial contrast: 20 elements below WCAG AA threshold (min 1.0:1).

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

✅ 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 MyFontsFlesch 100

Color Palette

7 unique colors

Light

#ffffff

Background· 69%

#343a9b

Primary· 11.299999999999999%

#e0ecf8

Accent· 9.3%

#a7a1b4

Secondary· 3%

#6d7fb2

Secondary· 2.7%

#b8cbe3

Secondary· 2.4%

#d9dbe3

Border· 2.3%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

img.sciimg.com(15)ccwebchat.chem99.com(2)ccuba.chem99.com(1)ad.sci99.com(1)ucenter.sci99.com(1)

Website Identity

sci99.com

18 years old

Location detected: 🇨🇳 Chinavia ip

Xin Net Technology Corporationzh-CN

Sponsored

Last analyzed: 13 May 2026 at 18:41

Historical Analysis & Change Tracking