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casttosonos.com

https://casttosonos.com· First analyzed 08 Sept 2026· Updated 08 Sept 2026
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casttosonos.com
Desktop screenshot of casttosonos.com
Mobile screenshot of casttosonos.com
Mobile

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Hosting Provider

Cloudflare
cloudflare.com

IP Address

172.67.140.186

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

derek.ns.cloudflare.com.demi.ns.cloudflare.com.

Performance

76

Core Web Vitals

Weight

First Contentful Paint
2.9 s10%
Speed Index
3.8 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1 MB
25 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
Infrastructure
Hosting
Cloudflare
CDN
Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

6 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Payments

1
Stripe

CDN

1
Cloudflare

SEO Analysis

A88/100
25
2
0
Meta Tags15/15
Content11/12
Headings6/8
Technical23/25
E-E-A-T7/7
Images4/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
C
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Title Length54 chars

Recommended: 50-60 chars (~338px / 580px)

Description Length132 chars

Recommended: 120-160 chars

Issues (0)

    2 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    35 URLs

    robots.txt

    2 rules

    Sitemap reference found

    Allows all crawlers

    Local SEO

    Local Search Readiness

    18/100
    Poor
    5 13

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

    Sponsored

    AI & LLM Readiness

    C69/100
    Bot Access
    20/25
    Machine Read.
    15/25
    Schema Data
    17/25
    Citation
    17/25

    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
    data-nosnippet

    Machine Readability

    llms.txt
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    blockquotesnavheader/footer
    Text ratio:15%
    Words:1,202
    Token eff.:Optimal
    Sections/1K:23.3
    Depth:3/5

    Structured Data

    9 JSON-LD
    FAQPage×1.5HowTo×1.5Person×1.3(min)Organization×1.1WebSite
    sameAs entity links

    Citation Readiness

    Opening Summary13w
    Descriptive Headingsavg 5w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (5)
    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
    76/100
    11
    Passed
    2
    Critical
    2
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    18/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    10/15
    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.
    3 recommendations
    • •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.
    59/100
    B
    106 mg
    CO₂e / view
    1.0 MB
    Page Weight
    70%
    Cleaner Than
    New Visitor
    121 mg
    vs
    Returning (cached)
    61 mg
    Annual (10K/mo)
    12.7 kg
    Emission Segments
    Data Center
    5 mg
    Network
    31 mg
    Device
    70 mg
    Resource Breakdown
    JavaScript
    207.9 KB
    Images
    164.6 KB
    CSS
    13.3 KB
    HTML
    12.1 KB
    Other
    649.9 KB
    Green Hosting Verified
    Cloudflare
    GWF Verified
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    0%Critical
    Critical / Transactional

    HTTPS

    WAF

    85d

    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+H3

    Valid From

    04.09.2026

    Valid Until

    03.12.2026

    Subject Alternative Names (1)

    casttosonos.com

    SHA-256 Fingerprint

    17:6C:64:C7:45:0B:46:BE:C5:DF:D4:A2:1C:18:FF:EE:2A:55:CB:C7...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    alt-svc
    h3=":443"; ma=86400
    cf-ray
    a37ffd3bce9351ed-GRU
    content-encoding
    zstd
    content-type
    text/html; charset=utf-8
    date
    Tue, 08 Sep 2026 18:24:17 GMT
    nel
    {"report_to":"cf-nel","success_fraction":0.0,"max_age":60480...
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    90

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (5)

    aspmx.l.google.com
    alt3.aspmx.l.google.com
    alt4.aspmx.l.google.com
    alt1.aspmx.l.google.com

    +1 more

    Domain Information

    casttosonos.com

    Domain Age
    3y 11m

    Created

    20.09.2022

    Expires

    20.09.2027

    Last Updated

    13.03.2026

    Registrar

    Cloudflare, Inc.

    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.
    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...
    Upgrade to view recommendations

    Typography & Readability

    Poppins + Lato

    WCAG AA
    73/100
    Readability
    /30
    19/30

    14px · LH 1.63

    Hierarchy
    /20
    17/20

    4.29x ratio

    WCAG
    /25
    22/25

    6:1 min contrast

    Performance
    /25
    15/25

    2 fonts · 1 req

    Heading Font

    Poppins

    Sans60px

    Body Font

    Lato

    Sans14px

    Contrast Ratio

    6:1

    WCAG AA (≥4.5:1)

    Reading Comfort

    ~40 CPL

    Narrow lines
    60px
    h1
    36px
    h2
    24px
    h3
    18px
    h4
    14px
    p

    ⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

    ✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 6.0:1).

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

    ✅ Strong hierarchy: Headlines are 4.3x larger than body text.

    ✅ Lean font stack: 2 font families keeps load times fast.

    ⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

    Buy on MyFontsFlesch 62

    Color Palette

    5 unique colors
    20.87:1 AAA Dark
    #010101
    Primary· 73.89999999999999%
    #ffffff
    Text· 9.3%

    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

    4 Resources

    2
    Scripts
    2
    Styles
    1
    Async
    0
    Defer

    Top Script Sources

    googletagmanager.com(1)static.cloudflareinsights.com(1)

    Website Identity

    Cast to Sonos

    Cast to Sonos

    SoftwareApplication

    Cast any audio from Chrome tabs directly to your Sonos speakers. Easy-to-use Chrome extension for seamless wireless audio streaming to Sonos devices.

    3 years old
    Location detected: 🇨🇦 Canadavia ip
    Cloudflare, Inc.📧 Google Workspaceen

    Social Profiles

    X (Twitter)GitHub

    Sponsored

    Last analyzed: 08 Sept 2026 at 18:24

    Historical Analysis & Change Tracking