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rubenoppenheimer.com

https://rubenoppenheimer.com· First analyzed 20 May 2026· Updated 20 May 2026
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rubenoppenheimer.com
Desktop screenshot of rubenoppenheimer.com
Mobile screenshot of rubenoppenheimer.com
Mobile

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Hosting Provider

Cloudflare
cloudflare.com

IP Address

172.67.166.227

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

princess.ns.cloudflare.com.louis.ns.cloudflare.com.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
733 ms10%
Speed Index
953 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
813 KB
22 requests

Image Optimization

Lazy LoadWebP
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Cloudflare
CDN
Cloudflare

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

3 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

CDN

1
Cloudflare

SEO Analysis

A82/100
24
3
0
Meta Tags12/15
Content12/12
Headings8/8
Technical24/25
E-E-A-T2/7
Images6/7
Links3/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
R
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Title Length38 chars

Recommended: 50-60 chars (~225px / 580px)

Description Length148 chars

Recommended: 120-160 chars

Issues (0)

    3 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    4 URLs

    robots.txt

    18 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    16/100
    Poor
    4 13

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

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    AI & LLM Readiness

    C64/100
    Bot Access
    18/25
    Machine Read.
    16/25
    Schema Data
    13/25
    Citation
    17/25

    AI Bot Access

    11/14 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:40%
    Words:2,208
    Token eff.:Optimal
    Sections/1K:11.8
    Depth:1/5

    Structured Data

    7 JSON-LD
    FAQPage×1.5Organization×1.1WebSiteProductSearchAction

    Citation Readiness

    Opening Summary56w
    Descriptive Headingsavg 6.1w
    Canonical URL
    Open Graph3/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (7)
    AI readiness recommendation preview...
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    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
    83/100
    12
    Passed
    1
    Critical
    0
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    20/20
    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
    4/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    1 recommendation
    • •Accessibility recommendation preview...
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    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.
    64/100
    B
    82 mg
    CO₂e / view
    813.3 KB
    Page Weight
    80%
    Cleaner Than
    New Visitor
    94 mg
    vs
    Returning (cached)
    47 mg
    Annual (10K/mo)
    9.9 kg
    Emission Segments
    Data Center
    4 mg
    Network
    24 mg
    Device
    54 mg
    Resource Breakdown
    JavaScript
    5.3 KB
    Images
    739.7 KB
    CSS
    55.1 KB
    Fonts
    1.1 KB
    HTML
    12.0 KB
    Green Hosting Verified
    Cloudflare
    GWF Verified
    5 recommendations
    • •Carbon footprint recommendation preview...
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    D

    Security Score

    46%Poor
    Interactive

    HTTPS

    WAF

    49d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Google Trust Services

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-256

    TLS Version

    TLSv1.2

    HTTP Protocol

    HTTP/2+H3

    Valid From

    09.04.2026

    Valid Until

    08.07.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    rubenoppenheimer.com*.rubenoppenheimer.com

    SHA-256 Fingerprint

    B7:D8:0C:41:B2:D7:E2:B8:C2:80:2A:79:19:BF:39:F7:E6:E6:68:4B...

    Top Recommendations

    Security recommendation preview

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    Upgrade to view header details

    HTTP Headers

    Developer Console

    alt-svc
    h3=":443"; ma=86400
    cache-control
    🟣 Private(private, must-revalidate)
    cf-cache-status
    DYNAMIC
    cf-ray
    9fe79c83bf07ea48-FCO
    content-encoding
    zstd
    content-security-policy
    upgrade-insecure-requests;
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    0

    SPF
    DKIM
    DMARC

    Domain Information

    rubenoppenheimer.com

    Domain Age
    2y 2m

    Created

    08.03.2024

    Expires

    08.03.2027

    Last Updated

    28.02.2026

    Registrar

    NICENIC INTERNATIONAL GROUP CO., LIMITED

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected

    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
    67/100
    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
    2 recommendations
    • •Mobile compatibility recommendation preview...
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    Typography & Readability

    Rubik

    WCAG Partial
    78/100
    Readability
    /30
    25/30

    16px · LH 1.40

    Hierarchy
    /20
    19/20

    2x ratio · ✓ H1→H6

    WCAG
    /25
    16/25

    1:1 min contrast

    Performance
    /25
    18/25

    1 font · 1 req

    Heading Font

    Rubik

    Sans32px

    Body Font

    Rubik

    Sans16px

    Contrast Ratio

    1:1

    35 issues

    Reading Comfort

    ~36 CPL

    Narrow lines
    32px
    h1
    24px
    h2
    19px
    h3
    16px
    p

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

    ✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

    ❌ Very complex text: Flesch score 19/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 35 elements below WCAG AA threshold (min 1.0:1).

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

    ✅ Strong hierarchy: Headlines are 2.0x larger than body text.

    GGoogle FontsFlesch 19

    Color Palette

    6 unique colors
    Light
    #0e2c44
    Primary· 53%
    #123958
    Accent· 20.4%
    #15456b
    Accent· 9.9%
    #70b3da
    Accent· 6.7%
    #507791
    Secondary· 5.1%
    #314a60
    Secondary· 4.7%

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    Scripts & Styles

    6 Resources

    3
    Scripts
    3
    Styles
    0
    Async
    3
    Defer

    Top Script Sources

    rubenoppenheimer.com(2)static.cloudflareinsights.com(1)

    Website Identity

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    Organization

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    rubenoppenheimer.com/
    2 years old
    Location detected: 🇨🇦 Canadavia ip
    NICENIC INTERNATIONAL GROUP CO., LIMITEDtr

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    Last analyzed: 20 May 2026 at 01:36

    Historical Analysis & Change Tracking