jsbc.com

https://jsbc.com· First analyzed 27 May 2026· Updated 27 May 2026

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jsbc.com

Mobile

Sponsored

Hosting Provider

Chinanet JS

IP Address

61.160.192.60

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Nanjing, China

ASN

AS140293

Organization

Chinanet JS

Server

Tengine

CDN

Performance

Core Web Vitals

Weight

First Contentful Paint

2.3 s10%

Speed Index

3.0 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

434 KB

28 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Chinanet JS

CDN

Technology Stack

3 Technologies Detected

Libraries

jQueryv3.6.0

CSS Frameworks

Tailwind CSS

Web Servers

Tengine

SEO Analysis

D42/100

Meta Tags5/15

Content8/12

Headings0/8

Technical12/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile2/4

Indexability3/3

jsbc.comjsbc.com

江苏广播电视总台集团_江苏网络电视台

江苏广播电视总台集团,江苏广电

Title Length18 chars

Recommended: 50-60 chars (~111px / 580px)

Description Length15 chars

Recommended: 120-160 chars

Issues (1)

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

12 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

100 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

F13/100

Bot Access

3/25

Machine Read.

4/25

Schema Data

0/25

Citation

6/25

AI Bot Access

0/14 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

navheader/footer

Text ratio:6%

Words:71

Token eff.:Too Short

Depth:2/5

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 (11)

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.

67/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

12/20

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

Forms & Inputs

15/15

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

1/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

3 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.

53/100

54 mg

CO₂e / view

433.8 KB

Page Weight

90%

Cleaner Than

New Visitor

61 mg

Returning (cached)

31 mg

Annual (10K/mo)

6.4 kg

Emission Segments

Data Center

12 mg

Network

13 mg

Device

29 mg

Resource Breakdown

JavaScript

31.0 KB

Images

393.3 KB

CSS

3.9 KB

HTML

5.7 KB

Green Hosting Not Verified

Chinanet JS

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

231d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

14.01.2026

Valid Until

13.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.jsbc.comjsbc.com

SHA-256 Fingerprint

59:76:10:05:B0:3E:EF:7D:2E:8F:04:2C:64:08:A2:75:CA:3A:1A:9B...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

ali-swift-global-savetime

1779888023

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Wed, 27 May 2026 13:20:23 GMT

eagleid

3adad01917798880236912974e

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

jsbc.com

Domain Age

26y 6m

Created

15.11.1999

Expires

15.11.2032

Last Updated

19.01.2024

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

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.

52/100

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,minimum-scale=1,maximum-scale=1,initial-scale=1,user-scalable=0

4 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Times New Roman

WCAG Partial

59/100

Readability

/30

19/30

22px · LH 2.40

Hierarchy

/20

10/20

WCAG

/25

14/25

1:1 min contrast

Performance

/25

16/25

1 font

Heading Font

Times New Roman

Body Font

Times New Roman

Serif22px

Contrast Ratio

1:1

12 issues

Reading Comfort

~44 CPL

Narrow lines

22px

✅ Excellent readability: 22px body text is ideal for all devices.

⚠️ Wide line spacing (2.40). 1.4–1.6 is optimal for body text.

⚠️ Partial contrast: 12 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

12 unique colors

Light

#ffffff

Text· 30.3%

#1a7cde

Accent· 12.6%

#1552cb

Accent· 9.7%

#1738b1

Primary· 7.3%

#08a5ec

Accent· 7.2%

#0cbbf2

Accent· 6.8%

#bfd2e1

Secondary· 5.2%

#15d5f6

Accent· 5.1%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

4 Resources

Scripts

Styles

Async

Defer

Top Script Sources

static.jstv.com(2)wkbrs1.tingyun.com(1)

Website Identity

jsbc.com

26 years old

Location detected: 🇨🇳 Chinavia ip

Alibaba Cloud Computing (Beijing) Co., Ltd.en

Sponsored

Last analyzed: 27 May 2026 at 13:20

Historical Analysis & Change Tracking