StackOptic
Back to Search
bgsub.cn favicon

bgsub.cn

https://bgsub.cn· First analyzed 14 May 2026· Updated 14 May 2026
Export
bgsub.cn
Desktop screenshot of bgsub.cn
Mobile screenshot of bgsub.cn
Mobile

Sponsored

Hosting Provider

China Unicom Yunnan Province Network

IP Address

14.204.50.238

Site Location

🇨🇳 Chinavia tld

Server Location

🇨🇳 Kunming, China

ASN

AS4837

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Performance

100

Core Web Vitals

Weight

First Contentful Paint
428 ms10%
Speed Index
556 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
929 KB
39 requests

Image Optimization

WebP
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
China Unicom Yunnan Province Network
CDN
Cloudflare

Technology Stack

6 Technologies Detected

Icon Libraries

2
Font AwesomeMaterial Icons

Analytics

2
Google Analytics
Google Analytics 4

CSS Frameworks

1
Tailwind CSS

CDN

1
Cloudflare

SEO Analysis

D55/100
16
8
0
Meta Tags5/15
Content3/12
Headings8/8
Technical18/25
E-E-A-T0/7
Images5/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile3/4
Indexability3/3
B
bgsub.cnbgsub.cn

消除或者替换图像背景，无需上传图像 - BgSub

在5秒内消除或者替换图像背景，智能调整颜色，所有操作都在浏览器完成，无需上传图像 - BgSub

Title Length25 chars

Recommended: 50-60 chars (~155px / 580px)

Description Length48 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    2 URLs

    robots.txt

    3 rules

    Sitemap reference found

    Allows all crawlers

    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

    F28/100
    Bot Access
    20/25
    Machine Read.
    2/25
    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
    Text ratio:3%
    Words:84
    Token eff.:Too Short
    Sections/1K:150

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary
    Descriptive Headingsavg 1.1w
    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.
    B
    70/100
    9
    Passed
    4
    Critical
    0
    Warnings
    Images & Alt Text
    15/20
    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
    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
    3/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    2 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.
    47/100
    B
    115 mg
    CO₂e / view
    929.3 KB
    Page Weight
    80%
    Cleaner Than
    New Visitor
    131 mg
    vs
    Returning (cached)
    66 mg
    Annual (10K/mo)
    13.8 kg
    Emission Segments
    Data Center
    26 mg
    Network
    28 mg
    Device
    62 mg
    Resource Breakdown
    JavaScript
    124.5 KB
    Images
    249.8 KB
    CSS
    525.5 KB
    HTML
    29.4 KB
    Green Hosting Not Verified
    China Unicom Yunnan Province Network
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    B

    Security Score

    78%Good
    Static / Informational

    HTTPS

    WAF

    78d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    RSA (4096 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2+H3

    Valid From

    03.05.2026

    Valid Until

    01.08.2026

    Subject Alternative Names (1)

    bgsub.cn

    SHA-256 Fingerprint

    BD:A3:82:2D:16:7D:46:06:F7:8D:6C:BE:6C:1F:69:4C:E5:92:7E:2D...

    Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    access-control-allow-origin
    *
    age
    401588
    alt-svc
    h3=":443"; ma=86400
    cache-control
    🟡 0s(public, must-revalidate, max-age=0)
    cf-cache-status
    DYNAMIC
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    0

    SPF
    DKIM
    DMARC

    Domain Information

    bgsub.cn

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Privacy policy page linked

    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.
    C
    67/100
    Mobile Friendly8 breakpoints
    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
    initial-scale=1,minimum-scale=1,width=device-width
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Roboto

    WCAG Partial
    73/100
    Readability
    /30
    22/30

    14px · LH 1.50

    Hierarchy
    /20
    17/20

    3.43x ratio

    WCAG
    /25
    17/25

    1:1 min contrast

    Performance
    /25
    17/25

    System fonts

    Heading Font

    Roboto

    Sans48px

    Body Font

    Roboto

    Sans14px

    Contrast Ratio

    1:1

    6 issues

    Reading Comfort

    Single Font Family

    left aligned
    48px
    h1
    40px
    h2
    22px
    h3
    22px
    h4

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

    ✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

    ⚠️ Partial contrast: 6 elements below WCAG AA threshold (min 1.0:1).

    ⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

    ✅ Strong hierarchy: Headlines are 3.4x larger than body text.

    ✅ System fonts: Zero font loading delay — best possible LCP impact.

    Color Palette

    11 unique colors
    Light
    #ffffff
    Background· 64.5%
    #3c71fe
    Primary· 10.5%
    #ba9481
    Secondary· 5.2%
    #322e3d
    Secondary· 3.8%
    #d9beaf
    Secondary· 3.5%
    #c2c6cf
    Secondary· 3.4%
    #dbdee2
    Secondary· 3%
    #97b8c8
    Secondary· 2.2%

    Business & Marketing Stack

    1 Tools Detected

    Growing

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    1

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    11 Resources

    7
    Scripts
    4
    Styles
    1
    Async
    5
    Defer

    Top Script Sources

    local(4)hm.baidu.com(1)googletagmanager.com(1)static.cloudflareinsights.com(1)

    Website Identity

    bgsub.cn

    Location detected: 🇨🇳 Chinavia tld
    en-US

    Sponsored

    Last analyzed: 14 May 2026 at 00:44

    Historical Analysis & Change Tracking