StackOptic
Back to Search
johncrane.com favicon

johncrane.com

https://johncrane.com· First analyzed 14 May 2026· Updated 14 May 2026
Export
johncrane.com
Desktop screenshot of johncrane.com
Mobile screenshot of johncrane.com
Mobile

Sponsored

Hosting Provider

Microsoft Azure
azure.microsoft.com

IP Address

40.71.11.168

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Boydton, United States

ASN

AS8075

Organization

Microsoft Azure App Service (eastus)

CDN

CDN

Nameservers

a1-211.akam.net.a16-66.akam.net.a9-66.akam.net.a7-64.akam.net.+2 more

Performance

99

Core Web Vitals

Weight

First Contentful Paint
754 ms10%
Speed Index
980 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.4 MB
163 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Umbraco

Technology Stack

10 Technologies Detected

Analytics

4
Google Analytics
Google Analytics 4
Hotjar
Microsoft Clarity

Advertising

2
Google AdsLinkedIn Ads

Libraries

1
jQueryv3.7.1

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Social

1
AddThis

SEO Analysis

B78/100
22
8
0
Meta Tags12/15
Content10/12
Headings6/8
Technical23/25
E-E-A-T2/7
Images5/7
Links5/5
URL5/5
Social2/5
Freshness2/4
Mobile3/4
Indexability3/3
J
johncrane.comjohncrane.com

Mechanical Seals & Support Systems | John Crane

Learn more about how John Crane can keep your mission-critical operations running efficiently by maximizing the reliability of your rotating equipment with e...

Description truncated.
Title Length47 chars

Recommended: 50-60 chars (~288px / 580px)

Description Length220 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    973 URLs

    robots.txt

    7 rules

    Sitemap reference found

    Allows all crawlers

    Local SEO

    Local Search Readiness

    26/100
    Needs Work
    7 11

    Sponsored

    AI & LLM Readiness

    F35/100
    Bot Access
    20/25
    Machine Read.
    1/25
    Schema Data
    2/25
    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
    Text ratio:10%
    Words:5,801
    Token eff.:Excessive

    Structured Data

    1 JSON-LD
    Organization×1.1

    Citation Readiness

    Opening Summary116w
    Descriptive Headings
    Canonical URL
    Open Graph2/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (11)
    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
    72/100
    12
    Passed
    2
    Critical
    2
    Warnings
    Images & Alt Text
    15/20
    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
    5/15
    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
    15/15
    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.
    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.
    46/100
    C
    149 mg
    CO₂e / view
    1.4 MB
    Page Weight
    60%
    Cleaner Than
    New Visitor
    171 mg
    vs
    Returning (cached)
    85 mg
    Annual (10K/mo)
    17.9 kg
    Emission Segments
    Data Center
    7 mg
    Network
    44 mg
    Device
    98 mg
    Resource Breakdown
    JavaScript
    111.6 KB
    Images
    544.7 KB
    CSS
    614.8 KB
    HTML
    204.5 KB
    Other
    4.0 KB
    Green Hosting Verified
    Microsoft Azure
    Provider Match
    6 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    A

    Security Score

    89%Very Good
    Interactive

    HTTPS

    No WAF

    106d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    DigiCert Inc

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    28.02.2026

    Valid Until

    28.08.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (1)

    www.johncrane.com

    SHA-256 Fingerprint

    1F:93:82:5D:84:D5:11:A3:C4:6C:CF:EE:83:01:B8:B7:38:9C:FB:86...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    access-control-allow-origin
    https://resources.johncrane.com
    content-length
    209125
    content-security-policy
    script-src 'nonce-2MnY4i51YOwJbAPz5NXb0Rv2T9AhqM7XwIjGes4FVG...
    content-type
    text/html; charset=utf-8
    cross-origin-opener-policy
    same-origin
    Good Warning Issue

    Email Infrastructure

    Microsoft 365

    Score

    95

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (1)

    johncrane-com.mail.protection.outlook.com

    Domain Information

    johncrane.com

    Domain Age
    29y 4m

    Created

    23.12.1996

    Expires

    22.12.2026

    Last Updated

    18.12.2025

    Registrar

    CSC Corporate 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
    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
    73/100
    Mobile Friendly26 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=1.0
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    FFDINRegular

    WCAG Partial
    72/100
    Readability
    /30
    24/30

    16px · LH 1.50

    Hierarchy
    /20
    18/20

    3.75x ratio

    WCAG
    /25
    14/25

    4.11:1 min contrast

    Performance
    /25
    16/25

    2 fonts

    Heading Font

    FFDINRegular

    Sans60px

    Body Font

    FFDINRegular

    Sans16px

    Contrast Ratio

    4.11:1

    4 issues

    Reading Comfort

    Single Font Family

    left aligned
    60px
    h1
    64px
    h2
    31px
    h3
    45px
    h4
    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).

    ❌ Very complex text: Flesch score 4/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 4.1:1).

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

    ✅ Strong hierarchy: Headlines are 3.8x larger than body text.

    Buy on MyFontsFlesch 4

    Color Palette

    10 unique colors
    3.14:1 AA Large Light
    #ffffff
    Background· 36.8%
    #879588
    Other· 5.4%
    #0b0d0f
    Primary· 13.7%
    #1d2428
    Secondary· 6.9%
    #3c4c4e
    Text· 6.7%
    #442e16
    Accent· 5.4%
    #4d8c46
    Secondary· 4.6%
    #72542d
    Secondary· 4.4%

    Business & Marketing Stack

    9 Tools Detected

    Enterprise

    Marketing Automation

    1
    MarketoEnterprise

    Email marketing and automation platforms

    Behavior Analytics

    4
    Google Tag ManagerFree
    Google AnalyticsFree
    HotjarMid-Market
    Microsoft ClarityFree

    User behavior and product analytics

    Advertising

    2
    Google AdsEnterprise
    LinkedIn AdsEnterprise

    Ad platforms and retargeting pixels

    Privacy & Cookies

    1
    CookiebotMid-Market

    Cookie consent and privacy compliance tools

    Social Media

    1
    AddThisFree

    Social widgets and sharing tools

    5

    Categories

    9

    Total Tools

    3

    Enterprise

    2

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    22 Resources

    20
    Scripts
    2
    Styles
    13
    Async
    0
    Defer

    Top Script Sources

    munchkin.marketo.net(2)snap.licdn.com(2)j.6sc.co(2)googletagmanager.com(2)consent.cookiebot.com(2)

    Website Identity

    John Crane

    John Crane

    Organization
    www.johncrane.com
    29 years old
    Location detected: 🇺🇸 United Statesvia ip
    CSC Corporate Domains, Inc.📧 Microsoft 365en-US

    Social Profiles

    LinkedInYouTube

    Sponsored

    Last analyzed: 14 May 2026 at 16:24

    Historical Analysis & Change Tracking