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21bit.com

https://21bit.com· First analyzed 31 May 2026· Updated 31 May 2026
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21bit.com
Desktop screenshot of 21bit.com
Mobile screenshot of 21bit.com
Mobile

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Hosting Provider

Ipxo Limited

IP Address

185.135.9.64

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS209242

Organization

Ipxo Limited

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

nitin.ns.cloudflare.com.indie.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
288 ms10%
Speed Index
374 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.5 MB
160 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Ghost

Progressive Web App

PWA ReadyWeb ManifestService WorkerApple Touch IconTheme Color

Technology Stack

10 Technologies Detected

Analytics

4
Google Analytics
Google Analytics 4
Facebook Pixel
Hotjar

Frameworks

2
Angularv20.3.4
Express

Other

1
Lottie

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

CDN

1
Cloudflare

SEO Analysis

C67/100
18
9
0
Meta Tags14/15
Content8/12
Headings8/8
Technical15/25
E-E-A-T0/7
Images5/7
Links5/5
URL5/5
Social1/5
Freshness0/4
Mobile3/4
Indexability3/3
2
21bit.com21bit.com

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Description truncated.
Title Length52 chars

Recommended: 50-60 chars (~307px / 580px)

Description Length183 chars

Recommended: 120-160 chars

Issues (0)

    9 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    4 URLs

    robots.txt

    6 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

    D44/100
    Bot Access
    20/25
    Machine Read.
    12/25
    Schema Data
    0/25
    Citation
    12/25

    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:1%
    Words:1,385
    Token eff.:Optimal

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary35w
    Descriptive Headingsavg 7.2w
    Canonical URL
    Open Graph1/3
    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.
    B
    74/100
    10
    Passed
    4
    Critical
    0
    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
    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
    7/15
    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.
    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.
    45/100
    C
    184 mg
    CO₂e / view
    1.5 MB
    Page Weight
    60%
    Cleaner Than
    New Visitor
    211 mg
    vs
    Returning (cached)
    105 mg
    Annual (10K/mo)
    22.1 kg
    Emission Segments
    Data Center
    41 mg
    Network
    44 mg
    Device
    99 mg
    Resource Breakdown
    JavaScript
    582.0 KB
    Images
    223.5 KB
    CSS
    332.1 KB
    Fonts
    233.6 KB
    HTML
    120.0 KB
    Green Hosting Not Verified
    Ipxo Limited
    6 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    B

    Security Score

    76%Good
    Static / Informational

    HTTPS

    WAF

    56d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Google Trust Services

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-256

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    28.04.2026

    Valid Until

    27.07.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (1)

    www.21bit.com

    SHA-256 Fingerprint

    B8:D5:05:63:0E:B3:C6:1B:28:A0:CF:AE:21:14:D3:F3:41:B6:5F:8F...

    Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-origin
    *
    cache-control
    🟡 300s(public, max-age=300)
    cf-cache-status
    DYNAMIC
    cf-ray
    a044e02759d53356-EWR
    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html; charset=utf-8
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    90

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (6)

    alt2.aspmx.l.google.com
    alt3.aspmx.l.google.com
    smtp.google.com
    alt1.aspmx.l.google.com

    +2 more

    Domain Information

    21bit.com

    Domain Age
    24y 5m

    Created

    25.12.2001

    Expires

    25.12.2026

    Last Updated

    26.12.2025

    Registrar

    NameSilo, LLC

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    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.
    A
    80/100
    Mobile Friendly104 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, maximum-scale=5
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Kanit

    WCAG Partial
    61/100
    Readability
    /30
    13/30

    13px · LH 1.80

    Hierarchy
    /20
    14/20

    1.38x ratio · ✓ H1→H6

    WCAG
    /25
    16/25

    1:1 min contrast

    Performance
    /25
    18/25

    1 font · 5 req

    Heading Font

    Kanit

    Sans18px

    Body Font

    Kanit

    Sans13px

    Contrast Ratio

    1:1

    3 issues

    Reading Comfort

    ~45 CPL

    Optimal (45–75)
    18px
    h1
    20px
    h2
    24px
    h3
    13px
    p
    Major Second
    Scale

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

    ✅ Optimal line length: ~45 chars/line (ideal 45–75 CPL).

    ⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 1.0:1).

    ✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

    ⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

    ✅ Lean font stack: 1 font families keeps load times fast.

    Buy on MyFonts

    Color Palette

    5 unique colors
    2.34:1 Fail Light
    #7e7d87
    Other· 0.2%
    #c5c4c9
    Other· 0.2%
    #08041b
    Primary· 99.29999999999998%
    #f5f4f6
    Secondary· 0.2%
    #41404e
    Secondary· 0.2%

    Business & Marketing Stack

    5 Tools Detected

    Enterprise

    Behavior Analytics

    3
    Google Tag ManagerFree
    Google AnalyticsFree
    HotjarMid-Market

    User behavior and product analytics

    Advertising

    1
    Facebook PixelMid-Market

    Ad platforms and retargeting pixels

    Social Media

    1
    Facebook SDKFree

    Social widgets and sharing tools

    3

    Categories

    5

    Total Tools

    0

    Enterprise

    2

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    18 Resources

    14
    Scripts
    4
    Styles
    8
    Async
    4
    Defer

    Top Script Sources

    connect.facebook.net(3)static.hotjar.com(2)googletagmanager.com(2)cdn.onesignal.com(2)cdp.customer.io(1)

    Website Identity

    21bit.com

    24 years old
    Location detected: 🇩🇪 Germanyvia ip
    NameSilo, LLC📧 Google Workspaceen-nz

    Sponsored

    Last analyzed: 31 May 2026 at 09:16

    Historical Analysis & Change Tracking

    21bit.com Technology Stack - Built With Angular, Lottie, Tailwind CSS, Google Analytics, Google Analytics 4 | StackOptic | StackOptic