StackOptic
Back to Search
alivecor.com favicon

alivecor.com

https://alivecor.com· First analyzed 05 May 2026· Updated 05 May 2026
Export
alivecor.com
Desktop screenshot of alivecor.com
Mobile screenshot of alivecor.com
Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

52.32.251.178

Site Location

🇺🇸 United Statesvia phone

Server Location

🇺🇸 Portland, United States

ASN

AS16509

Organization

AWS EC2 (us-west-2)

Nameservers

ns-1394.awsdns-46.org.ns-1972.awsdns-54.co.uk.ns-202.awsdns-25.com.ns-961.awsdns-56.net.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
893 ms10%
Speed Index
1.2 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
948 KB
88 requests

Image Optimization

Lazy LoadResponsiveVercel Image Optimization
0–49
50–89
90–100

Architecture Stack

Hybrid
🔀 Hybrid
Frontend
Framework
Next.js
Styling
Tailwind CSS
CMS
Shopify
Infrastructure
Hosting
Amazon Web Services (AWS)
CDN
Vercel Image

Technology Stack

11 Technologies Detected

Analytics

5
Google Analytics
Google Analytics 4
Facebook Pixel
Hotjar
Matomo

Meta Frameworks

1
Next.js

Other

1
AOS (Animate On Scroll)

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Customer Support

1
Zendesk

Advertising

1
Twitter Ads

SEO Analysis

C69/100
21
8
0
Meta Tags5/15
Content10/12
Headings7/8
Technical20/25
E-E-A-T0/7
Images6/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile3/4
Indexability3/3
A
alivecor.comalivecor.com

AliveCor | AliveCor Home

The easiest way to acquire a 12-lead ECG.

Title Length24 chars

Recommended: 50-60 chars (~140px / 580px)

Description Length41 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    471 URLs

    robots.txt

    17 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    17/100
    Poor
    5 11 2

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

    Sponsored

    AI & LLM Readiness

    F29/100
    Bot Access
    20/25
    Machine Read.
    0/25
    Schema Data
    0/25
    Citation
    9/25

    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
    Text ratio:8%
    Words:7,426
    Token eff.:Excessive

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary200w
    Descriptive Headings
    Canonical URL
    Open Graph2/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (12)
    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
    73/100
    11
    Passed
    4
    Critical
    0
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    6/20
    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
    11/15
    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.
    54/100
    B
    96 mg
    CO₂e / view
    947.7 KB
    Page Weight
    80%
    Cleaner Than
    New Visitor
    109 mg
    vs
    Returning (cached)
    55 mg
    Annual (10K/mo)
    11.5 kg
    Emission Segments
    Data Center
    5 mg
    Network
    28 mg
    Device
    63 mg
    Resource Breakdown
    JavaScript
    488.2 KB
    Images
    254.6 KB
    CSS
    29.8 KB
    Fonts
    36.4 KB
    HTML
    71.8 KB
    Other
    66.8 KB
    Green Hosting Verified
    Amazon Web Services (AWS)
    Provider Match
    3 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    B

    Security Score

    76%Good
    Static / Informational

    HTTPS

    No WAF

    69d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    14.04.2026

    Valid Until

    13.07.2026

    Subject Alternative Names (2)

    alivecor.comwww.alivecor.com

    SHA-256 Fingerprint

    B8:EF:08:97:F6:A3:03:A3:AC:86:F2:34:F0:07:9C:A5:96:A5:B7:3D...

    Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🔴 No Cache(private, no-cache, no-store, max-age=0, must-revalidate)
    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html; charset=utf-8
    date
    Tue, 05 May 2026 10:50:30 GMT
    link
    <https://alivecor.com/>; rel="alternate"; hreflang="en", <ht...
    strict-transport-security
    max-age=31536000; includeSubDomains
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    95

    SPF
    DKIM
    DMARC

    DMARC Policy

    Reject (Strictest)

    MX Records (7)

    alt1.aspmx.l.google.com
    alt2.aspmx.l.google.com
    aspmx2.googlemail.com
    aspmx.l.google.com

    +3 more

    Domain Information

    alivecor.com

    Domain Age
    16y 5m

    Created

    02.12.2009

    Expires

    02.12.2026

    Last Updated

    01.12.2025

    Registrar

    Tucows Domains Inc.

    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
    Data Protection Officer mentioned
    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
    71/100
    Mobile Friendly24 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
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    DM Sans

    WCAG Partial
    76/100
    Readability
    /30
    24/30

    18px · LH 1.56

    Hierarchy
    /20
    15/20

    2.67x ratio

    WCAG
    /25
    17/25

    1.25:1 min contrast

    Performance
    /25
    20/25

    1 font · 1 req

    Heading Font

    DM Sans

    Sans48px

    Body Font

    DM Sans

    Sans18px

    Contrast Ratio

    1.25:1

    15 issues

    Reading Comfort

    ~34 CPL

    Narrow lines
    48px
    h1
    48px
    h2
    18px
    p
    Minor Third
    Scale

    ✅ Excellent readability: 18px body text is ideal for all devices.

    ✅ Optimal line spacing: 1.56 ratio (ideal range 1.4–1.6).

    ⚠️ Hard to read: Flesch score 40/100. Simplify sentences for wider reach.

    ⚠️ Partial contrast: 15 elements below WCAG AA threshold (min 1.2:1).

    ❌ Broken heading hierarchy: 2 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

    ✅ Strong hierarchy: Headlines are 2.7x larger than body text.

    Buy on MyFontsFlesch 40

    Color Palette

    6 unique colors
    Light
    #353942
    Text· 54.30000000000001%
    #e8eff9
    Background· 24.2%
    #154d8b
    Primary· 6.2%
    #9ca7b5
    Secondary· 4.8%
    #475365
    Secondary· 2.9%

    Business & Marketing Stack

    4 Tools Detected

    Advanced

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Advertising

    1
    Facebook PixelMid-Market

    Ad platforms and retargeting pixels

    Privacy & Cookies

    1
    CookiebotMid-Market

    Cookie consent and privacy compliance tools

    3

    Categories

    4

    Total Tools

    0

    Enterprise

    2

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Ad Networks

    OpenX

    Sponsored

    Scripts & Styles

    22 Resources

    20
    Scripts
    2
    Styles
    19
    Async
    0
    Defer

    Top Script Sources

    local(16)connect.facebook.net(2)consent.cookiebot.com(1)consentcdn.cookiebot.com(1)

    Website Identity

    alivecor.com

    +18553388800
    16 years old
    Location detected: 🇺🇸 United Statesvia phone
    Tucows Domains Inc.📧 Google Workspaceen

    Sponsored

    Last analyzed: 05 May 2026 at 10:50

    Historical Analysis & Change Tracking