fdbaudio.com

https://fdbaudio.com· First analyzed 03 May 2026· Updated 03 May 2026

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fdbaudio.com

Mobile

Sponsored

Hosting Provider

Alibaba Cloud

alibabacloud.com

IP Address

39.108.158.15

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Shenzhen, China

ASN

AS37963

Organization

Aliyun Computing Co., LTD

Server

Apache

Nameservers

dns7.hichina.com.dns8.hichina.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.1 s10%

Speed Index

2.8 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

449 KB

54 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Alibaba Cloud

Technology Stack

4 Technologies Detected

Frameworks

Libraries

CSS Frameworks

Web Servers

SEO Analysis

F35/100

Meta Tags5/15

Content2/12

Headings0/8

Technical11/21

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social2/5

Freshness0/4

Mobile1/4

Indexability3/3

fdbaudio.comfdbaudio.com

阿里云万网虚机IP访问报错提示

Title Length15 chars

Recommended: 50-60 chars (~90px / 580px)

Description Length15 chars

Recommended: 120-160 chars

Issues (3)

• Very thin content (32 words). Search engines need substantial content for ranking.
• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (7/7) — 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.

Sponsored

AI & LLM Readiness

F29/100

Bot Access

20/25

Machine Read.

3/25

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:1%

Words:31

Token eff.:Too Short

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph3/3

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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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.

51/100

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

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.

48/100

56 mg

CO₂e / view

449.1 KB

Page Weight

90%

Cleaner Than

New Visitor

64 mg

Returning (cached)

32 mg

Annual (10K/mo)

6.7 kg

Emission Segments

Data Center

12 mg

Network

13 mg

Device

30 mg

Resource Breakdown

JavaScript

248.6 KB

Images

53.6 KB

CSS

132.7 KB

HTML

13.2 KB

Other

1.1 KB

Green Hosting Not Verified

Alibaba Cloud

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

337d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

05.03.2026

Valid Until

06.04.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.aliyun.comaliyun.com

SHA-256 Fingerprint

B1:E7:C9:67:B4:F4:C9:22:95:76:78:72:F3:93:AD:FF:53:3A:86:64...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

120

content-type

text/html

date

Sun, 03 May 2026 10:22:24 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

hzmx01.mxmail.netease.com

hzmx02.mxmail.netease.com

Domain Information

fdbaudio.com

Domain Age

20y 2m

Created

13.02.2006

Expires

13.02.2030

Last Updated

16.01.2025

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.

53/100

Mobile Friendly2 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

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

pingfang SC

WCAG Partial

59/100

Readability

/30

18/30

14px · LH 1.71

Hierarchy

/20

10/20

WCAG

/25

17/25

2.87:1 min contrast

Performance

/25

14/25

1 font

Heading Font

pingfang SC

Body Font

pingfang SC

Sans14px

Contrast Ratio

2.87:1

5 issues

Reading Comfort

Single Family

left aligned

14px

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

⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 2.9:1).

✅ 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

8 unique colors

3:1 AA Large Light

#ffffff

Background· 88.39999999999998%

#959595

Other· 2.5%

#fc8f0f

Primary· 2.8%

#c0b2a3

Secondary· 1.8%

#f1f0ed

Secondary· 1.8%

#eadccb

Secondary· 0.8%

#ca712d

Accent· 0.3%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

14 Resources

Scripts

Styles

Async

Defer

Top Script Sources

g.alicdn.com(5)cloud-assets.alicdn.com(2)query.aliyun.com(1)

Website Identity

fdbaudio.com

20 years old

Location detected: 🇨🇳 Chinavia ip

Alibaba Cloud Computing (Beijing) Co., Ltd.zh-CN

Sponsored

Last analyzed: 03 May 2026 at 10:23

Historical Analysis & Change Tracking