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whitescreen.dev

https://whitescreen.dev· First analyzed 21 May 2026· Updated 21 May 2026
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whitescreen.dev
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Mobile screenshot of whitescreen.dev
Mobile

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Hosting Provider

Cloudflare
cloudflare.com

IP Address

104.21.21.182

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

luke.ns.cloudflare.com.demi.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
496 ms10%
Speed Index
645 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.9 MB
41 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Hosting
Cloudflare
CDN
Cloudflare

Progressive Web App

PWA ReadyWeb ManifestService WorkerTheme Color

Technology Stack

14 Technologies Detected

Advertising

4
Google AdsGoogle AdSenseCriteoOutbrain

Analytics

3
Google Analytics
Google Analytics 4
Facebook Pixel

CSS Frameworks

2
Bootstrap
Tailwind CSS

Libraries

1
jQuery

Icon Libraries

1
Material Icons

Fonts

1
Google Fonts

Payments

1
Square

CDN

1
Cloudflare

SEO Analysis

A86/100
24
5
0
Meta Tags15/15
Content10/12
Headings6/8
Technical25/25
E-E-A-T5/7
Images4/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile3/4
Indexability3/3
W
whitescreen.devwhitescreen.dev

White Screen – Fullscreen Tool for Cleaning, Zoom & Focus

Use this fullscreen white screen tool to clean your monitor, improve Zoom lighting, focus better, or test for dead pixels. No ads. Pure white.

Title Length57 chars

Recommended: 50-60 chars (~343px / 580px)

Description Length142 chars

Recommended: 120-160 chars

Issues (0)

    5 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    173 URLs

    robots.txt

    1 rules

    Allows all crawlers

    Local SEO

    Local Search Readiness

    29/100
    Needs Work
    8 10

    Sponsored

    AI & LLM Readiness

    D54/100
    Bot Access
    20/25
    Machine Read.
    7/25
    Schema Data
    9/25
    Citation
    18/25

    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
    navheader/footer
    Text ratio:11%
    Words:8,771
    Token eff.:Excessive
    Sections/1K:2.1
    Depth:2/5

    Structured Data

    6 JSON-LD
    FAQPage×1.5Organization×1.1BreadcrumbList
    sameAs entity links

    Citation Readiness

    Opening Summary99w
    Descriptive Headingsavg 4.4w
    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
    70/100
    11
    Passed
    3
    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
    2/15
    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...
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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.
    32/100
    E
    304 mg
    CO₂e / view
    2.9 MB
    Page Weight
    30%
    Cleaner Than
    New Visitor
    348 mg
    vs
    Returning (cached)
    174 mg
    Annual (10K/mo)
    36.5 kg
    Emission Segments
    Data Center
    15 mg
    Network
    89 mg
    Device
    200 mg
    Resource Breakdown
    JavaScript
    479.5 KB
    Images
    1.9 MB
    CSS
    615.3 KB
    HTML
    13.4 KB
    Green Hosting Verified
    Cloudflare
    GWF Verified
    6 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    25%Critical
    Critical / Transactional

    HTTPS

    WAF

    76d

    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

    07.05.2026

    Valid Until

    05.08.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    whitescreen.dev*.whitescreen.dev

    SHA-256 Fingerprint

    59:D2:00:43:EC:0D:75:D8:77:01:E5:4B:DC:1F:E0:EC:F5:EA:FF:08...

    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)
    cf-cache-status
    DYNAMIC
    cf-ray🇮🇹 Milan
    9ff1e7087d521f11-MXP
    content-encoding
    zstd
    content-type
    text/html; charset=utf-8
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    0

    SPF
    DKIM
    DMARC

    Domain Information

    whitescreen.dev

    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
    Legitimate interest basis 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
    70/100
    Mobile Friendly11 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=1
    3 recommendations
    • •Mobile compatibility recommendation preview...
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    Typography & Readability

    Montserrat

    WCAG Partial
    65/100
    Readability
    /30
    26/30

    16px · LH 1.50

    Hierarchy
    /20
    6/20

    1.25x ratio

    WCAG
    /25
    17/25

    3.95:1 min contrast

    Performance
    /25
    16/25

    1 font · 5 req

    Heading Font

    Montserrat

    Sans20px

    Body Font

    Montserrat

    Sans16px

    Contrast Ratio

    3.95:1

    10 issues

    Reading Comfort

    ~36 CPL

    Narrow lines
    20px
    h1
    32px
    h2
    18px
    h3
    16px
    p
    Minor Second
    Scale

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

    ✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

    ⚠️ Partial contrast: 10 elements below WCAG AA threshold (min 4.0:1).

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

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

    ⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

    GGoogle FontsFlesch 55

    Color Palette

    6 unique colors
    5.74:1 AA Dark
    #666666
    Other· 68.2%
    #ffffff
    Background· 23%
    #006ce0
    Primary· 0%
    #3e2e46
    Secondary· 2%
    #546d8d
    Secondary· 1.6%

    Business & Marketing Stack

    4 Tools Detected

    Enterprise

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    Advertising

    2
    Google AdsEnterprise
    Facebook PixelMid-Market

    Ad platforms and retargeting pixels

    Social Media

    1
    Facebook SDKFree

    Social widgets and sharing tools

    3

    Categories

    4

    Total Tools

    1

    Enterprise

    1

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Ad Networks

    Google AdSenseMedia.netSovrnPubMaticOpenXIndex Exchange

    Sponsored

    Scripts & Styles

    22 Resources

    18
    Scripts
    4
    Styles
    11
    Async
    1
    Defer

    Top Script Sources

    pagead2.googlesyndication.com(8)local(6)fundingchoicesmessages.google.com(2)googletagmanager.com(1)connect.facebook.net(1)

    Website Identity

    Whitescreen.dev – White Screen Tool

    Whitescreen.dev – White Screen Tool

    WebApplication

    Use this fullscreen white screen tool to clean your monitor, improve Zoom lighting, focus better, or test dead pixels. No ads. Pure white.

    whitescreen.dev@gmail.com
    Location detected: 🇨🇦 Canadavia ip
    en

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    Last analyzed: 21 May 2026 at 07:35

    Historical Analysis & Change Tracking