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endurance.biz

https://endurance.biz· First analyzed 13 May 2026· Updated 13 May 2026
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endurance.biz
Desktop screenshot of endurance.biz
Mobile screenshot of endurance.biz
Mobile

Sponsored

Hosting Provider

LiteSpeed
20i.com

IP Address

185.151.30.220

Site Location

🇬🇧 United Kingdomvia ip

Server Location

🇬🇧 London, United Kingdom

ASN

AS48254

Organization

CDN

Server

Apache

Nameservers

ns3.stackdns.com.ns2.stackdns.com.ns4.stackdns.com.ns1.stackdns.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
586 ms10%
Speed Index
762 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
871 KB
37 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPress
cms
Newspaperv12.7.6Custom
by tagDiv
View Theme

Technology Stack

10 Technologies Detected

Analytics

2
Google Analytics
Facebook Pixel

Plugins

2
Td ComposerAdvanced Ads Tracking

Libraries

1
jQuery

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Web Servers

1
Apache

Languages

1
PHPv8.3.30

SEO Analysis

C67/100
21
9
0
Meta Tags9/15
Content8/12
Headings5/8
Technical21/25
E-E-A-T0/7
Images4/7
Links2/5
URL5/5
Social5/5
Freshness2/4
Mobile3/4
Indexability3/3
E
endurance.bizendurance.biz

Home - endurance.biz

endurance.biz, the dedicated information site for the global endurance sport industry. We focus on 'the business of athlete experiences'.

Title Length20 chars

Recommended: 50-60 chars (~122px / 580px)

Description Length137 chars

Recommended: 120-160 chars

Issues (0)

    9 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    119 URLs

    119 sub-sitemaps

    robots.txt

    5 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    8/100
    Poor
    3 12 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.
    11/25
    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.txtinvalid
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    Text ratio:2%
    Words:441
    Token eff.:Optimal
    Sections/1K:18.1

    Structured Data

    Microdata

    Citation Readiness

    Opening Summary
    Descriptive Headingsavg 10.6w
    Canonical URL
    Open Graph2/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (12)
    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
    66/100
    11
    Passed
    4
    Critical
    1
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    11/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    5/15
    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
    7/15
    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.
    48/100
    B
    108 mg
    CO₂e / view
    871.4 KB
    Page Weight
    80%
    Cleaner Than
    New Visitor
    123 mg
    vs
    Returning (cached)
    62 mg
    Annual (10K/mo)
    12.9 kg
    Emission Segments
    Data Center
    24 mg
    Network
    26 mg
    Device
    58 mg
    Resource Breakdown
    JavaScript
    325.1 KB
    Images
    365.9 KB
    CSS
    130.9 KB
    Fonts
    2.3 KB
    HTML
    46.5 KB
    Other
    621 B
    Green Hosting Not Verified
    LiteSpeed
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    D

    Security Score

    45%Poor
    Critical / Transactional

    HTTPS

    No WAF

    72d

    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

    26.04.2026

    Valid Until

    25.07.2026

    Subject Alternative Names (2)

    *.endurance.bizendurance.biz

    SHA-256 Fingerprint

    A2:A9:29:42:8F:B3:67:7A:BB:09:57:B8:A1:3C:99:0F:5E:6C:14:8A...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🔵 Public(public, s-maxage=216000)
    content-encoding
    📦 Gzip(gzip)
    content-security-policy-report-only
    default-src 'self'; base-uri 'self'; form-action 'self'; fra...
    content-type
    text/html; charset=UTF-8
    cross-origin-opener-policy
    same-origin-allow-popups
    cross-origin-resource-policy
    same-site
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    73

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (1)

    mx.stackmail.com

    Domain Information

    endurance.biz

    Domain Age
    8y 8m

    Created

    21.08.2017

    Expires

    20.08.2027

    Last Updated

    24.10.2025

    Registrar

    Hosting Concepts B.V. d/b/a Registrar.eu

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookiebot

    Cookie Consent Banner
    Cookiebot
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: Cookiebot
    Privacy policy page linked
    Data Protection Officer 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
    78/100
    Mobile Friendly29 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
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Roboto + Verdana

    WCAG Partial
    64/100
    Readability
    /30
    19/30

    14px · LH 1.50

    Hierarchy
    /20
    6/20

    1x ratio

    WCAG
    /25
    17/25

    1:1 min contrast

    Performance
    /25
    22/25

    System fonts

    Heading Font

    Roboto

    Sans14px

    Body Font

    Verdana

    Sans14px

    Contrast Ratio

    1:1

    23 issues

    Reading Comfort

    Dual Sans-Serif

    left aligned
    14px
    h1
    26px
    h3
    14px
    h4
    Minor Third
    Scale

    ⚠️ 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 32/100. Simplify sentences for wider reach.

    ⚠️ Partial contrast: 23 elements below WCAG AA threshold (min 1.0:1).

    ❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

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

    GGoogle FontsFlesch 32

    Color Palette

    10 unique colors
    20.37:1 AAA Light
    #ffffff
    Background· 50.6%
    #050506
    Text· 6.1%
    #2b3b2b
    Primary· 5.5%
    #a9b1b8
    Secondary· 3.9%
    #71504a
    Secondary· 3%
    #671c1c
    Accent· 1.4%

    Business & Marketing Stack

    3 Tools Detected

    Advanced

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Advertising

    1
    Facebook PixelMid-Market

    Ad platforms and retargeting pixels

    2

    Categories

    3

    Total Tools

    0

    Enterprise

    1

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Sponsored

    Scripts & Styles

    14 Resources

    10
    Scripts
    4
    Styles
    6
    Async
    0
    Defer

    Top Script Sources

    endurance.biz(4)googletagmanager.com(3)connect.facebook.net(3)

    Website Identity

    endurance.biz

    office@endurancebusiness.com
    8 years old
    Location detected: 🇬🇧 United Kingdomvia ip
    Hosting Concepts B.V. d/b/a Registrar.euen-GB

    Sponsored

    Last analyzed: 13 May 2026 at 10:36

    Historical Analysis & Change Tracking