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coderpad.io

https://coderpad.io· First analyzed 13 May 2026· Updated 13 May 2026
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coderpad.io
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Mobile

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Hosting Provider

Cloudflare
cloudflare.com

IP Address

104.26.8.116

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

nitin.ns.cloudflare.com.savanna.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
484 ms10%
Speed Index
629 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
397 KB
85 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPress
cms
CoderPad Red Themev3.0.0Custom
by Russell Heimlich
View Theme

Technology Stack

7 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
FullStory

CSS Frameworks

1
Tailwind CSS

Marketing

1
HubSpot

Advertising

1
LinkedIn Ads

CDN

1
Cloudflare

SEO Analysis

A+93/100
30
3
0
Meta Tags15/15
Content8/12
Headings8/8
Technical25/25
E-E-A-T7/7
Images4/7
Links5/5
URL5/5
Social5/5
Freshness4/4
Mobile4/4
Indexability3/3
C
coderpad.iocoderpad.io

Coding Interview & Technical Assessment Platform - CoderPad

Hire better devs with CoderPad's live coding interview & technical assessment platform. Filter candidates based on their coding skills, in 99+ languages.

Title Length59 chars

Recommended: 50-60 chars (~361px / 580px)

Description Length153 chars

Recommended: 120-160 chars

Issues (0)

    3 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    12 URLs

    12 sub-sitemaps

    robots.txt

    4 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    22/100
    Needs Work
    6 12

    Sponsored

    AI & LLM Readiness

    C67/100
    Bot Access
    20/25
    Machine Read.
    16/25
    Schema Data
    13/25
    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.txtinvalid
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    nav
    Text ratio:2%
    Words:1,067
    Token eff.:Optimal
    Depth:1/5

    Structured Data

    6 JSON-LD
    Article×1.2Person×1.3Organization×1.1WebSiteSearchAction
    sameAs entity links

    Citation Readiness

    Opening Summary23w
    Descriptive Headings
    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.
    A
    87/100
    14
    Passed
    1
    Critical
    0
    Warnings
    Images & Alt Text
    18/20
    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
    13/15
    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.

    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.
    68/100
    A
    40 mg
    CO₂e / view
    397.4 KB
    Page Weight
    90%
    Cleaner Than
    New Visitor
    46 mg
    vs
    Returning (cached)
    23 mg
    Annual (10K/mo)
    4.8 kg
    Emission Segments
    Data Center
    2 mg
    Network
    12 mg
    Device
    26 mg
    Resource Breakdown
    JavaScript
    124.4 KB
    Images
    77.1 KB
    CSS
    110.7 KB
    HTML
    85.2 KB
    Green Hosting Verified
    Cloudflare
    GWF Verified
    3 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    A+

    Security Score

    100%Excellent
    Static / Informational

    HTTPS

    WAF

    75d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-384

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2+H3

    Valid From

    28.04.2026

    Valid Until

    27.07.2026

    Subject Alternative Names (2)

    *.coderpad.iocoderpad.io

    SHA-256 Fingerprint

    C3:94:07:07:57:85:27:6D:21:8C:43:20:C6:F5:B4:E4:88:AA:36:A3...

    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-origin
    https://coderpad.io
    age
    63033
    alt-svc
    h3=":443"; ma=86400
    cache-control
    🟡 0s(s-maxage=86400, max-age=0, must-revalidate, max-age=0)
    cf-apo-via
    tcache
    cf-cache-status
    HIT
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    98

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (5)

    alt4.aspmx.l.google.com
    alt2.aspmx.l.google.com
    alt3.aspmx.l.google.com
    aspmx.l.google.com

    +1 more

    Domain Information

    coderpad.io

    Domain Age
    13 years

    Created

    04.05.2013

    Expires

    04.05.2027

    Last Updated

    25.04.2026

    Registrar

    Key-Systems GmbH

    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

    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
    73/100
    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=1.0
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Satoshi

    WCAG Partial
    78/100
    Readability
    /30
    20/30

    24px · LH 1.50

    Hierarchy
    /20
    20/20

    3.33x ratio · ✓ H1→H6

    WCAG
    /25
    18/25

    1:1 min contrast

    Performance
    /25
    20/25

    1 font · 3 req

    Heading Font

    Satoshi

    Sans80px

    Body Font

    Satoshi

    Sans24px

    Contrast Ratio

    1:1

    7 issues

    Reading Comfort

    ~31 CPL

    Narrow lines
    80px
    h1
    60px
    h2
    60px
    h3
    24px
    p

    ✅ Excellent readability: 24px body text is ideal for all devices.

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

    ⚠️ Hard to read: Flesch score 31/100. Simplify sentences for wider reach.

    ⚠️ Partial contrast: 7 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 3.3x larger than body text.

    Buy on MyFontsFluid Type (rem)Flesch 31

    Color Palette

    6 unique colors
    Light
    #ffffff
    Background· 76.19999999999999%
    #d91529
    Primary· 12.9%
    #af9ea0
    Secondary· 4%
    #550a12
    Accent· 2.8%
    #95353f
    Secondary· 0.9%

    Business & Marketing Stack

    6 Tools Detected

    Enterprise

    CRM Systems

    1
    HubSpotMid-Market

    Customer Relationship Management platforms

    Behavior Analytics

    2
    Google AnalyticsFree
    FullStoryEnterprise

    User behavior and product analytics

    Lead Generation

    1
    ClearbitEnterprise

    Popups, forms, and lead capture tools

    Advertising

    1
    LinkedIn AdsEnterprise

    Ad platforms and retargeting pixels

    Privacy & Cookies

    1
    CookiebotMid-Market

    Cookie consent and privacy compliance tools

    5

    Categories

    6

    Total Tools

    3

    Enterprise

    2

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    30 Resources

    20
    Scripts
    10
    Styles
    12
    Async
    5
    Defer

    Top Script Sources

    coderpad.io(5)x.clearbitjs.com(2)edge.fullstory.com(2)js-eu1.hs-banner.com(1)js-eu1.usemessages.com(1)

    Website Identity

    CoderPad

    Organization

    Hire better devs with CoderPad's live coding interview & technical assessment platform. Filter candidates based on their coding skills, in 99+ languages.

    13 years old
    Location detected: 🇨🇦 Canadavia ip
    Key-Systems GmbH📧 Google Workspaceen-US

    Sponsored

    Last analyzed: 13 May 2026 at 07:52

    Historical Analysis & Change Tracking