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esi-audio.com

https://esi-audio.com· First analyzed 15 May 2026· Updated 15 May 2026
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esi-audio.com
Desktop screenshot of esi-audio.com
Mobile screenshot of esi-audio.com
Mobile

Sponsored

Hosting Provider

Ratiokontakt GmbH

IP Address

212.63.145.242

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Bamberg, Germany

ASN

AS8741

Organization

Ratiokontakt GmbH

Server

Microsoft IIS

Nameservers

ns12.nameserver.de.ns11.nameserver.de.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
789 ms10%
Speed Index
1.0 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
58 KB
30 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Hosting
Ratiokontakt GmbH

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

7 Technologies Detected

CSS Frameworks

2
Bootstrap
Normalize.css

Analytics

2
Google Analytics
Google Analytics 4

Libraries

1
jQueryv1.11.3

Web Servers

1
Microsoft IISv10.0

Frameworks

1
ASP.NET

SEO Analysis

C60/100
16
10
0
Meta Tags9/15
Content9/12
Headings6/8
Technical15/25
E-E-A-T3/7
Images2/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile3/4
Indexability3/3
E
esi-audio.comesi-audio.com

ESI Audiotechnik GmbH

ESI offers professional audio hardware for professional music studios. Specialized in PCIe, USB, network audio hardware, MIDI devices, studio monitors

Title Length21 chars

Recommended: 50-60 chars (~129px / 580px)

Description Length150 chars

Recommended: 120-160 chars

Issues (0)

    10 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    1,027 URLs

    robots.txt

    7 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    6/100
    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

    D43/100
    Bot Access
    20/25
    Machine Read.
    10/25
    Schema Data
    0/25
    Citation
    13/25

    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:5%
    Words:388
    Token eff.:Optimal
    Sections/1K:20.6

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary73w
    Descriptive Headingsavg 7.9w
    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
    63/100
    8
    Passed
    4
    Critical
    0
    Warnings
    Images & Alt Text
    10/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    14/20
    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
    14/15
    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.
    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.
    51/100
    A+
    7 mg
    CO₂e / view
    57.7 KB
    Page Weight
    95%
    Cleaner Than
    New Visitor
    8 mg
    vs
    Returning (cached)
    4 mg
    Annual (10K/mo)
    852 g
    Emission Segments
    Data Center
    2 mg
    Network
    2 mg
    Device
    4 mg
    Resource Breakdown
    Images
    40.6 KB
    HTML
    17.1 KB
    Green Hosting Not Verified
    Ratiokontakt GmbH
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    36%Critical
    Interactive

    HTTPS

    No WAF

    69d

    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/2

    Valid From

    24.04.2026

    Valid Until

    23.07.2026

    Subject Alternative Names (2)

    esi-audio.comwww.esi-audio.com

    SHA-256 Fingerprint

    64:31:E6:BD:F9:FE:AB:14:85:64:BE:D2:1D:1E:10:61:F7:FF:45:93...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-headers
    Content-Type
    access-control-allow-methods
    GET,PUT,POST,DELETE,OPTIONS
    access-control-allow-origin
    *
    cache-control
    🟣 Private(private)
    content-encoding
    ⚡ Brotli(br)
    content-length
    17198
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    20

    SPF
    DKIM
    DMARC

    MX Records (1)

    mail.clustermail.de

    Domain Information

    esi-audio.com

    Domain Age
    20 years

    Created

    18.05.2006

    Expires

    18.05.2026

    Last Updated

    19.05.2025

    Registrar

    InterNetX GmbH

    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.
    D
    51/100
    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=768, initial-scale=1.0
    4 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    DIN web + ROBOTO web

    WCAG Partial
    54/100
    Readability
    /30
    10/30

    13px · LH 1.25

    Hierarchy
    /20
    17/20

    3.64x ratio

    WCAG
    /25
    15/25

    1.19:1 min contrast

    Performance
    /25
    12/25

    3 fonts

    Heading Font

    DIN web

    Sans46px

    Body Font

    ROBOTO web

    Sans13px

    Contrast Ratio

    1.19:1

    15 issues

    Reading Comfort

    ~99 CPL

    Wide lines
    46px
    h1
    19px
    h2
    15px
    h3
    13px
    p

    ❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

    ⚠️ Tight line spacing (1.25). Increase to 1.4–1.6 for better readability.

    ⚠️ Wide lines: ~99 chars/line. Use max-width: 65ch for comfortable reading.

    ❌ Very complex text: Flesch score 23/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 15 elements below WCAG AA threshold (min 1.2:1).

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

    Buy on MyFontsFlesch 23

    Color Palette

    13 unique colors
    Dark
    #5d6365
    Other· 6%
    #f0ebe5
    Background· 29.1%
    #fdf212
    Accent· 11.5%
    #8d2617
    Accent· 8.6%
    #a33f1d
    Accent· 8%
    #13212d
    Primary· 6.6%
    #42251e
    Secondary· 6%
    #b6b59d
    Secondary· 5.9%

    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

    9 Resources

    3
    Scripts
    6
    Styles
    1
    Async
    0
    Defer

    Top Script Sources

    esi351.de(2)googletagmanager.com(1)

    Website Identity

    esi-audio.com

    20 years old
    Location detected: 🇩🇪 Germanyvia ip
    InterNetX GmbHen

    Sponsored

    Last analyzed: 15 May 2026 at 17:18

    Historical Analysis & Change Tracking