StackOptic
Back to Search
aluminum.org favicon

aluminum.org

https://aluminum.org· First analyzed 30 Apr 2026· Updated 30 Apr 2026
Export
aluminum.org
Desktop screenshot of aluminum.org
Mobile screenshot of aluminum.org
Mobile

Sponsored

Hosting Provider

Pantheon
pantheon.io

IP Address

23.185.0.4

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 San Francisco, United States

ASN

AS54113

Organization

Pantheon

Server

Nginx

CDN

Fastly

Nameservers

ns78.worldnic.com.ns77.worldnic.com.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
902 ms10%
Speed Index
1.2 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
10.3 MB
132 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Drupal

Technology Stack

10 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Libraries

1
jQuery

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Advertising

1
Google Ads

Web Servers

1
Nginx

Customer Support

1
Zendesk

SEO Analysis

C66/100
19
9
0
Meta Tags7/15
Content12/12
Headings7/8
Technical18/25
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social0/5
Freshness2/4
Mobile4/4
Indexability3/3
A
aluminum.orgaluminum.org

The Aluminum Association

Aluminum is critical to many of our modern innovations. Aluminum sent us to Mars, motors us to greater fuel- and cost-efficient vehicles, increases our build...

Description truncated.
Title Length24 chars

Recommended: 50-60 chars (~145px / 580px)

Description Length361 chars

Recommended: 120-160 chars

Issues (0)

    9 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    686 URLs

    robots.txt

    53 rules

    Local SEO

    Local Search Readiness

    8/100
    Poor
    2 13 2

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

    Sponsored

    AI & LLM Readiness

    D45/100
    Bot Access
    20/25
    Machine Read.
    12/25
    Schema Data
    0/25
    Citation
    13/25

    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
    def. listsnavheader/footer
    Text ratio:8%
    Words:1,151
    Token eff.:Optimal
    Sections/1K:13.9
    Depth:3/5

    Structured Data

    RDFa

    Citation Readiness

    Opening Summary24w
    Descriptive Headingsavg 2.5w
    Canonical URL
    Open Graph0/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (10)
    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
    84/100
    14
    Passed
    3
    Critical
    0
    Warnings
    Images & Alt Text
    13/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    17/20
    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
    11/15
    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.
    26/100
    F
    1.31 g
    CO₂e / view
    10.3 MB
    Page Weight
    5%
    Cleaner Than
    New Visitor
    1.50 g
    vs
    Returning (cached)
    748 mg
    Annual (10K/mo)
    157.0 kg
    Emission Segments
    Data Center
    292 mg
    Network
    314 mg
    Device
    702 mg
    Resource Breakdown
    JavaScript
    373.3 KB
    Images
    5.5 MB
    CSS
    4.4 MB
    Fonts
    1.4 KB
    HTML
    18.6 KB
    Other
    36.1 KB
    Green Hosting Not Verified
    Pantheon
    7 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    A+

    Security Score

    91%Excellent
    Static / Informational

    HTTPS

    No WAF

    39d

    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

    11.03.2026

    Valid Until

    09.06.2026

    Subject Alternative Names (4)

    aluminum.orgchoosealuminum.orgwww.aluminum.orgwww.choosealuminum.org

    SHA-256 Fingerprint

    18:B6:A9:11:F6:88:CE:13:6A:3F:CC:22:31:37:3D:B4:E4:65:1B:24...

    Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    age
    0
    cache-control
    🔴 No Cache(must-revalidate, no-cache, private)
    content-encoding
    📦 Gzip(gzip)
    content-language
    en
    content-type
    text/html; charset=UTF-8
    Good Warning Issue

    Email Infrastructure

    Barracuda

    Score

    98

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (2)

    d339146b.ess.barracudanetworks.com
    d339146a.ess.barracudanetworks.com

    Domain Information

    aluminum.org

    Domain Age
    28y 4m

    Created

    05.01.1998

    Expires

    04.01.2031

    Last Updated

    10.11.2025

    Registrar

    Network Solutions, LLC

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Script

    Cookie Consent Banner
    Cookie Script
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: Cookie Script
    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

    Typography & Readability

    DM Serif Display + Helvetica

    WCAG Partial
    68/100
    Readability
    /30
    22/30

    16px · LH 1.50

    Hierarchy
    /20
    12/20

    5x ratio

    WCAG
    /25
    18/25

    1:1 min contrast

    Performance
    /25
    16/25

    3 fonts · 1 req

    Heading Font

    DM Serif Display

    Serif80px

    Body Font

    Helvetica

    Sans16px

    Contrast Ratio

    1:1

    2 issues

    Reading Comfort

    ~37 CPL

    Narrow lines
    80px
    h1
    50px
    h2
    16px
    h3
    24px
    h4
    16px
    p

    ✅ 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 20/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 1.0:1).

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

    ✅ Strong hierarchy: Headlines are 5.0x larger than body text.

    GGoogle FontsFlesch 20

    Color Palette

    5 unique colors
    Dark
    #2d2d2d
    Other· 18.599999999999998%
    #1d4b41
    Primary· 65.9%
    #c1d5c5
    Secondary· 6.5%
    #5e756f
    Secondary· 5.1%

    Business & Marketing Stack

    3 Tools Detected

    Advanced

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Advertising

    1
    Google AdsEnterprise

    Ad platforms and retargeting pixels

    2

    Categories

    3

    Total Tools

    1

    Enterprise

    0

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Ad Networks

    Google Ad Manager

    Sponsored

    Scripts & Styles

    30 Resources

    20
    Scripts
    10
    Styles
    6
    Async
    0
    Defer

    Top Script Sources

    local(14)googletagmanager.com(2)google-analytics.com(1)googletagservices.com(1)tag.simpli.fi(1)

    Website Identity

    aluminum.org

    28 years old

    1400 Crystal DriveSuite 430Arlington, VA 22202Main Line: 703-358-2960Bookstore: 480-779-6259

    Location detected: 🇺🇸 United Statesvia ip
    Network Solutions, LLC📧 Barracudaen

    Sponsored

    Last analyzed: 30 Apr 2026 at 20:25

    Historical Analysis & Change Tracking