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bridgebase.com

https://bridgebase.com· First analyzed 04 May 2026· Updated 04 May 2026
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bridgebase.com
Desktop screenshot of bridgebase.com
Mobile screenshot of bridgebase.com
Mobile

Sponsored

Hosting Provider

IBM Cloud (SoftLayer)
ibm.com/cloud

IP Address

169.54.210.132

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Las Vegas, United States

ASN

AS36351

Organization

Bridge Base Online, Ltd.

Server

Nginx

Nameservers

ns1.softlayer.com.ns2.softlayer.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
647 ms10%
Speed Index
841 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
736 KB
46 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
IBM Cloud (SoftLayer)

Technology Stack

10 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Segment

Advertising

3
Google AdsGoogle AdSenseMicrosoft Advertising

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

SEO Analysis

D56/100
16
10
0
Meta Tags11/15
Content9/12
Headings6/8
Technical13/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile2/4
Indexability3/3
B
bridgebase.combridgebase.com

Bridge Base Online - Play Online Bridge

Free online bridge. Largest bridge site in the world. Duplicate, tournaments, money games, vugraph, more.

Title Length39 chars

Recommended: 50-60 chars (~232px / 580px)

Description Length105 chars

Recommended: 120-160 chars

Issues (0)

    10 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    17 URLs

    robots.txt

    6 rules

    Local SEO

    Local Search Readiness

    0/100
    Poor
    15 2

    This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

    Sponsored

    AI & LLM Readiness

    F33/100
    Bot Access
    20/25
    Machine Read.
    7/25
    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
    nav
    Text ratio:5%
    Words:247
    Token eff.:Too Short
    Sections/1K:48.6
    Depth:1/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary36w
    Descriptive Headingsavg 2.2w
    Canonical URL
    Open Graph0/3
    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.
    A
    80/100
    11
    Passed
    3
    Critical
    0
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    15/20
    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
    6/15
    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.
    36/100
    B
    91 mg
    CO₂e / view
    736.2 KB
    Page Weight
    80%
    Cleaner Than
    New Visitor
    104 mg
    vs
    Returning (cached)
    52 mg
    Annual (10K/mo)
    10.9 kg
    Emission Segments
    Data Center
    20 mg
    Network
    22 mg
    Device
    49 mg
    Resource Breakdown
    JavaScript
    239.8 KB
    Images
    373.8 KB
    CSS
    77.4 KB
    Fonts
    782 B
    HTML
    26.4 KB
    Other
    18.0 KB
    Green Hosting Not Verified
    IBM Cloud (SoftLayer)
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    B

    Security Score

    71%Good
    Static / Informational

    HTTPS

    No WAF

    57d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    ZeroSSL GmbH

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    01.04.2026

    Valid Until

    30.06.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (1)

    www.bridgebase.com

    SHA-256 Fingerprint

    D7:CB:8B:F1:92:E5:E5:32:51:7F:01:3C:02:76:7A:09:F0:9E:0C:BC...

    Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🟡 900s(max-age=900)
    content-type
    text/html; charset=UTF-8
    date
    Mon, 04 May 2026 11:44:14 GMT
    expires
    Mon, 04 May 2026 11:59:14 GMT
    pragma
    cache
    server
    nginx
    Good Warning Issue

    Email Infrastructure

    Microsoft 365

    Score

    98

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (1)

    bridgebase-com.mail.protection.outlook.com

    Domain Information

    bridgebase.com

    Domain Age
    30y 3m

    Created

    30.01.1996

    Expires

    31.01.2031

    Last Updated

    02.02.2026

    Registrar

    Network Solutions, LLC

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Quantcast Choice

    Cookie Consent Banner
    Quantcast Choice
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: Quantcast Choice
    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.
    C
    64/100
    Mobile Friendly1 breakpoint
    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, shrink-to-fit=no
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Helvetica Neue

    WCAG Partial
    66/100
    Readability
    /30
    17/30

    16px · LH 2.30

    Hierarchy
    /20
    10/20

    1.75x ratio

    WCAG
    /25
    17/25

    1:1 min contrast

    Performance
    /25
    22/25

    System fonts

    Heading Font

    Helvetica Neue

    Sans28px

    Body Font

    Helvetica Neue

    Sans16px

    Contrast Ratio

    1:1

    5 issues

    Reading Comfort

    ~39 CPL

    Narrow lines
    28px
    h1
    70px
    h2
    18px
    h3
    16px
    p
    Augmented Fourth
    Scale

    ✅ Excellent readability: 16px body text is ideal for all devices.

    ⚠️ Wide line spacing (2.30). 1.4–1.6 is optimal for body text.

    ⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 1.0:1).

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

    ✅ System fonts: Zero font loading delay — best possible LCP impact.

    ✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

    GGoogle FontsFlesch 65

    Color Palette

    7 unique colors
    6.08:1 AA Light
    #ffffff
    Background· 28.3%
    #656166
    Other· 4.3%
    #212233
    Secondary· 34.400000000000006%
    #0d152a
    Primary· 16.6%
    #2e3543
    Secondary· 10.3%
    #64383e
    Secondary· 3.1%

    Business & Marketing Stack

    4 Tools Detected

    Enterprise

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Advertising

    2
    Google AdsEnterprise
    Microsoft AdsEnterprise

    Ad platforms and retargeting pixels

    2

    Categories

    4

    Total Tools

    2

    Enterprise

    0

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Ad Networks

    Google AdSense

    Sponsored

    Scripts & Styles

    18 Resources

    16
    Scripts
    2
    Styles
    13
    Async
    2
    Defer

    Top Script Sources

    googletagmanager.com(4)cmp.inmobi.com(2)pagead2.googlesyndication.com(2)bat.bing.com(2)static.bridgebaseonline.com(2)

    Website Identity

    bridgebase.com

    30 years old
    Location detected: 🇺🇸 United Statesvia ip
    Network Solutions, LLC📧 Microsoft 365

    Sponsored

    Last analyzed: 04 May 2026 at 11:44

    Historical Analysis & Change Tracking