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423down.com

https://423down.com· First analyzed 07 May 2026· Updated 07 May 2026
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423down.com
Desktop screenshot of 423down.com
Mobile screenshot of 423down.com
Mobile

Sponsored

Hosting Provider

Spartan Host Ltd

IP Address

45.151.132.50

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Seattle, United States

ASN

AS201106

Organization

Spartan Host Ltd

Server

Tengine

CDN

CDN

Nameservers

sled.dnspod.net.kerwin.dnspod.net.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
709 ms10%
Speed Index
922 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
659 KB
39 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPress
cms
D7Custom

Technology Stack

11 Technologies Detected

Advertising

4
Google AdsGoogle AdSenseCriteoOutbrain

Libraries

1
jQuery

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Material Icons

Fonts

1
Google Fonts

Payments

1
Square

Web Servers

1
Tengine

Plugins

1
Wp Opt

SEO Analysis

D58/100
15
12
0
Meta Tags5/15
Content10/12
Headings6/8
Technical16/25
E-E-A-T3/7
Images4/7
Links2/5
URL5/5
Social1/5
Freshness0/4
Mobile3/4
Indexability3/3
4
423down.com423down.com

423Down

安全下载超1000款绿色便携软件。始于2014，专注软件净化12年，所有资源经三重检测，提供纯净、去广告的正版替代方案。| 423DOWN

Title Length7 chars

Recommended: 50-60 chars (~46px / 580px)

Description Length69 chars

Recommended: 120-160 chars

Issues (0)

    12 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    170 URLs

    robots.txt

    46 rules

    Sitemap reference found

    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

    F39/100
    Bot Access
    20/25
    Machine Read.
    12/25
    Schema Data
    0/25
    Citation
    7/25

    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.txtinvalid
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    Text ratio:11%
    Words:8,456
    Token eff.:Acceptable
    Sections/1K:3.4

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary85w
    Descriptive Headingsavg 3.6w
    Canonical URL
    Open Graph0/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (10)
    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.
    C
    69/100
    10
    Passed
    5
    Critical
    1
    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
    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
    6/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    3 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.
    41/100
    B
    82 mg
    CO₂e / view
    659.0 KB
    Page Weight
    80%
    Cleaner Than
    New Visitor
    93 mg
    vs
    Returning (cached)
    47 mg
    Annual (10K/mo)
    9.8 kg
    Emission Segments
    Data Center
    18 mg
    Network
    20 mg
    Device
    44 mg
    Resource Breakdown
    JavaScript
    484.3 KB
    Images
    137.2 KB
    CSS
    19.2 KB
    Fonts
    6.2 KB
    HTML
    12.2 KB
    Green Hosting Not Verified
    Spartan Host Ltd
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    A+

    Security Score

    90%Excellent
    Critical / Transactional

    HTTPS

    No WAF

    139d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    DigiCert Inc

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    24.09.2025

    Valid Until

    23.09.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    423down.comwww.423down.com

    SHA-256 Fingerprint

    1F:DD:13:6F:17:FB:68:23:FE:E7:39:61:1D:54:E2:5F:21:C5:11:40...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    content-encoding
    📦 Gzip(gzip)
    content-security-policy
    default-src 'self'; script-src 'self' 'unsafe-inline' 'unsaf...
    content-type
    text/html; charset=UTF-8
    cross-origin-embedder-policy
    unsafe-none
    cross-origin-opener-policy
    unsafe-none
    cross-origin-resource-policy
    cross-origin
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    0

    SPF
    DKIM
    DMARC

    Domain Information

    423down.com

    Domain Age
    7y 11m

    Created

    11.06.2018

    Expires

    11.06.2028

    Last Updated

    13.02.2025

    Registrar

    Alibaba Cloud Computing Ltd. d/b/a HiChina (www.net.cn)

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Quantcast Choice

    Cookie Consent Banner
    Quantcast Choice
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: Quantcast Choice
    Privacy policy page linked
    Legitimate interest basis mentioned

    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.
    B
    71/100
    Mobile Friendly11 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
    width=device-width,initial-scale=1.0,minimum-scale=1.0,maximum-scale=5.0
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    microsoft yahei + Open Sans

    WCAG AAA
    67/100
    Readability
    /30
    13/30

    12px · LH 1.33

    Hierarchy
    /20
    15/20

    1.5x ratio

    WCAG
    /25
    21/25

    8.63:1 min contrast

    Performance
    /25
    18/25

    2 fonts · 2 req

    Heading Font

    microsoft yahei

    Sans18px

    Body Font

    Open Sans

    Sans12px

    Contrast Ratio

    8.63:1

    WCAG AAA (≥7:1)

    Reading Comfort

    ~39 CPL

    Narrow lines
    18px
    h1
    25px
    h2
    12px
    h3
    12px
    p

    ❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

    ⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

    ⚠️ Hard to read: Flesch score 45/100. Simplify sentences for wider reach.

    ✅ WCAG AAA contrast: All text meets 7:1 ratio (min 8.6:1).

    ⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

    ✅ Lean font stack: 2 font families keeps load times fast.

    GGoogle FontsBuy on MyFontsFlesch 45

    Color Palette

    6 unique colors
    5.74:1 AA Dark
    #666666
    Other· 52.69999999999999%
    #ffffff
    Background· 24.6%
    #101628
    Primary· 8.4%
    #526781
    Secondary· 1.4%

    Business & Marketing Stack

    2 Tools Detected

    Advanced

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    Advertising

    1
    Google AdsEnterprise

    Ad platforms and retargeting pixels

    2

    Categories

    2

    Total Tools

    1

    Enterprise

    0

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Ad Networks

    Google AdSenseMedia.netSovrnPubMaticOpenXIndex Exchange

    Sponsored

    Scripts & Styles

    12 Resources

    10
    Scripts
    2
    Styles
    5
    Async
    1
    Defer

    Top Script Sources

    423down.com(3)pagead2.googlesyndication.com(2)hm.baidu.com(2)fundingchoicesmessages.google.com(2)hmcdn.baidu.com(1)

    Website Identity

    423down.com

    7 years old

    匿名对Topaz Gigapixel AI破解版v8.3.4 绿色便携版的评论

    Location detected: 🇺🇸 United Statesvia ip
    Alibaba Cloud Computing Ltd. d/b/a HiChina (www.net.cn)zh-CN

    Sponsored

    Last analyzed: 07 May 2026 at 06:22

    Historical Analysis & Change Tracking