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hydrogenaudio.org

https://hydrogenaudio.org· First analyzed 30 Apr 2026· Updated 30 Apr 2026
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hydrogenaudio.org
Desktop screenshot of hydrogenaudio.org
Mobile screenshot of hydrogenaudio.org
Mobile

Sponsored

Hosting Provider

Manx Telecom Ltd

IP Address

80.65.253.51

Site Location

🇮🇲 via ip

Server Location

🇮🇲 Douglas, Isle of Man

ASN

AS13122

Organization

Manx Telecom Ltd

Server

Apache

Nameservers

ns-130-a.gandi.net.ns-3-c.gandi.net.ns-119-b.gandi.net.

Performance

91

Core Web Vitals

Weight

First Contentful Paint
1.4 s10%
Speed Index
1.8 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
460 KB
10 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Manx Telecom Ltd

Technology Stack

4 Technologies Detected

Libraries

1
jQueryv3.6.0

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Apache

Languages

1
PHPv7.4.33

SEO Analysis

D50/100
13
11
0
Meta Tags5/15
Content11/12
Headings5/8
Technical11/21
E-E-A-T0/7
Images2/7
Links2/5
URL5/5
Social0/5
Freshness2/4
Mobile4/4
Indexability3/3
H
hydrogenaudio.orghydrogenaudio.org

HydrogenAudio

HydrogenAudio

Title Length13 chars

Recommended: 50-60 chars (~78px / 580px)

Description Length13 chars

Recommended: 120-160 chars

Issues (0)

    11 issues found

    Upgrade to view details

    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

    D40/100
    Bot Access
    20/25
    Machine Read.
    12/25
    Schema Data
    0/25
    Citation
    8/25

    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
    navheader/footer
    Text ratio:12%
    Words:628
    Token eff.:Optimal
    Sections/1K:14.3
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary
    Descriptive Headingsavg 4.2w
    Canonical URL
    Open Graph0/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (9)
    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
    68/100
    11
    Passed
    2
    Critical
    3
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    17/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    0/15
    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
    13/15
    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.
    1 recommendation
    • •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.
    54/100
    A
    57 mg
    CO₂e / view
    460.3 KB
    Page Weight
    90%
    Cleaner Than
    New Visitor
    65 mg
    vs
    Returning (cached)
    33 mg
    Annual (10K/mo)
    6.8 kg
    Emission Segments
    Data Center
    13 mg
    Network
    14 mg
    Device
    31 mg
    Resource Breakdown
    JavaScript
    186.3 KB
    Images
    48.9 KB
    CSS
    217.4 KB
    HTML
    7.6 KB
    Green Hosting Not Verified
    Manx Telecom Ltd
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    25%Critical
    Critical / Transactional

    HTTPS

    No WAF

    65d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/1.1

    Valid From

    05.04.2026

    Valid Until

    04.07.2026

    Subject Alternative Names (9)

    hydrogenaud.iohydrogenaudio.orglistening-tests.hydrogenaud.iolistening-tests.hydrogenaudio.orgreplaygain.hydrogenaud.ioreplaygain.hydrogenaudio.orgtestsite.hydrogenaud.iowww.hydrogenaud.io+1 more

    SHA-256 Fingerprint

    EC:26:92:AA:F9:9F:7F:B7:68:D6:9A:49:48:4E:F0:9F:26:B8:DE:26...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🟣 Private(private)
    connection
    Keep-Alive
    content-encoding
    📦 Gzip(gzip)
    content-security-policy
    default-src 'self' www.google.com www.gstatic.com 'unsafe-in...
    content-type
    text/html; charset=UTF-8
    date
    Thu, 30 Apr 2026 01:33:58 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    50

    SPF
    DKIM
    DMARC

    MX Records (1)

    mail.hydrogenaudio.org

    Domain Information

    hydrogenaudio.org

    Domain Age
    24y 7m

    Created

    21.09.2001

    Expires

    21.09.2027

    Last Updated

    23.03.2026

    Registrar

    Gandi SAS

    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.
    D
    59/100
    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
    3 recommendations
    • •Mobile compatibility recommendation preview...
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    Typography & Readability

    Segoe UI

    WCAG Partial
    71/100
    Readability
    /30
    19/30

    14px · LH 1.50

    Hierarchy
    /20
    12/20

    2.36x ratio

    WCAG
    /25
    18/25

    1.09:1 min contrast

    Performance
    /25
    22/25

    System fonts

    Heading Font

    Segoe UI

    Sans33px

    Body Font

    Segoe UI

    Sans14px

    Contrast Ratio

    1.09:1

    1 issue

    Reading Comfort

    Single Font Family

    left aligned
    33px
    h1
    17px
    h3

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

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

    ⚠️ Hard to read: Flesch score 34/100. Simplify sentences for wider reach.

    ⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 1.1:1).

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

    ✅ Strong hierarchy: Headlines are 2.4x larger than body text.

    Flesch 34

    Color Palette

    4 unique colors
    Light
    #fafafa
    Background· 75.1%
    #697588
    Primary· 5.2%

    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

    4 Resources

    3
    Scripts
    1
    Styles
    0
    Async
    0
    Defer

    Top Script Sources

    hydrogenaudio.org(3)

    Website Identity

    hydrogenaudio.org

    24 years old
    Gandi SASen

    Social Profiles

    GitHub

    Sponsored

    Last analyzed: 30 Apr 2026 at 01:34

    Historical Analysis & Change Tracking