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shift4.com

https://shift4.com· First analyzed 29 Apr 2026· Updated 29 Apr 2026
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shift4.com
Desktop screenshot of shift4.com
Mobile screenshot of shift4.com
Mobile

Sponsored

Hosting Provider

Vercel
vercel.com

IP Address

76.76.21.21

Site Location

🇺🇸 Center Valley, United Statesvia schema_nap

Server Location

🇺🇸 Walnut, United States

ASN

AS16509

Organization

Vercel, Inc

Server

Vercel

Nameservers

ns-1952.awsdns-52.co.uk.ns-898.awsdns-48.net.ns-1485.awsdns-57.org.ns-154.awsdns-19.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
675 ms10%
Speed Index
878 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.1 MB
96 requests

Image Optimization

Lazy LoadWebPBunny Optimizer
0–49
50–89
90–100

Architecture Stack

JAMstack
⚡ SSG
Decoupled
Frontend
Framework
Next.js
API
Data Source
Headless CMS
Sanity
Infrastructure
Platform
Vercel
CDN
Bunny CDN

Progressive Web App

Web ManifestApple Touch Icon

Detected API Sources

https://cdn.sanity.io/images/b...https://cdn.sanity.io/images/b...

Technology Stack

10 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Facebook Pixel

CSS Frameworks

2
Bootstrap
Tailwind CSS

Meta Frameworks

1
Next.js

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Advertising

1
LinkedIn Ads

Platforms

1
Vercel

SEO Analysis

B76/100
22
6
0
Meta Tags15/15
Content9/12
Headings8/8
Technical19/25
E-E-A-T2/7
Images4/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile2/4
Indexability3/3
S
shift4.comshift4.com

Shift4 | Integrate Payments and Commerce Technology

Shift4 is the leader in secure payment processing solutions, including point-to-point encryption, tokenization, EMV technology and point-of-sale (POS) systems.

Title Length51 chars

Recommended: 50-60 chars (~315px / 580px)

Description Length159 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    Crawlability

    Sitemap
    robots.txt

    2 rules

    Allows all crawlers

    Local SEO

    Local Search Readiness

    30/100
    Needs Work
    8 12

    Sponsored

    AI & LLM Readiness

    D51/100
    Bot Access
    20/25
    Machine Read.
    13/25
    Schema Data
    6/25
    Citation
    12/25

    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
    nav
    Text ratio:6%
    Words:550
    Token eff.:Optimal
    Sections/1K:56.4
    Depth:1/5

    Structured Data

    1 JSON-LD
    Person×1.3Organization×1.1
    sameAs entity links

    Citation Readiness

    Opening Summary41w
    Descriptive Headingsavg 2.5w
    Canonical URL
    Open Graph3/3
    Twitter Card1/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (8)
    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
    86/100
    13
    Passed
    2
    Critical
    0
    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
    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
    9/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    1 recommendation
    • •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.
    70/100
    B
    112 mg
    CO₂e / view
    1.1 MB
    Page Weight
    70%
    Cleaner Than
    New Visitor
    127 mg
    vs
    Returning (cached)
    64 mg
    Annual (10K/mo)
    13.4 kg
    Emission Segments
    Data Center
    6 mg
    Network
    33 mg
    Device
    73 mg
    Resource Breakdown
    JavaScript
    629.9 KB
    Images
    11.3 KB
    CSS
    345.8 KB
    Fonts
    1009 B
    HTML
    21.5 KB
    Other
    94.6 KB
    Green Hosting Verified
    Vercel
    Provider Match
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    B

    Security Score

    76%Good
    Static / Informational

    HTTPS

    No WAF

    84d

    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

    24.04.2026

    Valid Until

    23.07.2026

    Subject Alternative Names (1)

    www.shift4.com

    SHA-256 Fingerprint

    8E:A8:5F:5E:98:E8:65:2A:1D:4C:DF:A1:51:AC:57:07:D4:B0:EA:E8...

    Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-origin
    *
    age
    13287
    cache-control
    🟡 0s(public, max-age=0, must-revalidate)
    content-disposition
    inline
    content-encoding
    ⚡ Brotli(br)
    content-type
    text/html; charset=utf-8
    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

    shift4.com

    Domain Age
    30 years

    Created

    25.04.1996

    Expires

    26.04.2029

    Last Updated

    26.02.2024

    Registrar

    Network Solutions, LLC

    DNSSEC
    Not Enabled

    Privacy & Compliance

    OneTrust

    Cookie Consent Banner
    OneTrust
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: OneTrust
    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
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    SofiaPro

    WCAG Partial
    75/100
    Readability
    /30
    24/30

    22px · LH 1.41

    Hierarchy
    /20
    19/20

    3.64x ratio · ✓ H1→H6

    WCAG
    /25
    16/25

    1.89:1 min contrast

    Performance
    /25
    16/25

    1 font · 7 req

    Heading Font

    SofiaPro

    Sans80px

    Body Font

    SofiaPro

    Sans22px

    Contrast Ratio

    1.89:1

    12 issues

    Reading Comfort

    ~33 CPL

    Narrow lines
    80px
    h1
    48px
    h2
    48px
    h3
    22px
    p

    ✅ Excellent readability: 22px body text is ideal for all devices.

    ✅ Optimal line spacing: 1.41 ratio (ideal range 1.4–1.6).

    ⚠️ Partial contrast: 12 elements below WCAG AA threshold (min 1.9:1).

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

    ✅ Strong hierarchy: Headlines are 3.6x larger than body text.

    ✅ Lean font stack: 1 font families keeps load times fast.

    GGoogle FontsBuy on MyFonts

    Color Palette

    7 unique colors
    Light
    #060604
    Primary· 31.7%
    #121b42
    Accent· 19.700000000000003%
    #1f2e5d
    Secondary· 12.6%
    #0c112e
    Accent· 6.5%
    #2a5cad
    Accent· 5.9%
    #d3dbe6
    Secondary· 5.7%

    Business & Marketing Stack

    4 Tools Detected

    Advanced

    Behavior Analytics

    2
    Google AnalyticsFree
    Google Tag ManagerFree

    User behavior and product analytics

    Advertising

    2
    Facebook PixelMid-Market
    LinkedIn AdsEnterprise

    Ad platforms and retargeting pixels

    2

    Categories

    4

    Total Tools

    1

    Enterprise

    1

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Sponsored

    Scripts & Styles

    25 Resources

    20
    Scripts
    5
    Styles
    10
    Async
    10
    Defer

    Top Script Sources

    local(10)fe.sitedataprocessing.com(4)connect.facebook.net(2)googletagmanager.com(2)wsmcdn.audioeye.com(1)

    Website Identity

    Shift4 Payments

    Shift4 Payments

    Organization

    Shift4 is a global leader in integrated payment processing and commerce technology, providing a comprehensive suite of solutions for businesses of all sizes.

    www.shift4.com/
    30 years old

    3501 Corporate Pkwy, Center Valley

    18034, Center Valley, PA

    US

    Location detected: 🇺🇸 United States, Center Valleyvia schema_nap
    Network Solutions, LLC📧 Google Workspaceen-GBEst. 1999

    Sponsored

    Last analyzed: 29 Apr 2026 at 01:41

    Historical Analysis & Change Tracking