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seattlecenter.com

https://seattlecenter.com· First analyzed 04 May 2026· Updated 04 May 2026
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seattlecenter.com
Desktop screenshot of seattlecenter.com
Mobile screenshot of seattlecenter.com
Mobile

Sponsored

Hosting Provider

City of Seattle

IP Address

156.74.251.38

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Seattle, United States

ASN

AS3401

Organization

City of Seattle

Nameservers

pdns100.ultradns.com.pdns100.ultradns.net.pdns100.ultradns.org.ns50.ultradns2.com.+2 more

Performance

91

Core Web Vitals

Weight

First Contentful Paint
1.4 s10%
Speed Index
1.8 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.4 MB
83 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
City of Seattle

Technology Stack

10 Technologies Detected

Libraries

2
jQueryv1.10.2
Moment.js

CSS Frameworks

2
Tailwind CSS
Bootstrap

Analytics

2
Google Analytics
Google Analytics 4

UI Components

1
Slick Carousel

Other

1
Modernizr

Fonts

1
Google Fonts

Social

1
ShareThis

SEO Analysis

D58/100
16
9
0
Meta Tags7/15
Content10/12
Headings8/8
Technical12/21
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile1/4
Indexability3/3
S
seattlecenter.comseattlecenter.com

Seattle Center

Connect to the extraordinary at Seattle Center, an active civic, arts and family gathering place in the core of our region. More than 30 cultural, educationa...

Description truncated.
Title Length14 chars

Recommended: 50-60 chars (~84px / 580px)

Description Length654 chars

Recommended: 120-160 chars

Issues (0)

    9 issues found

    Upgrade to view details

    Local SEO

    Local Search Readiness

    11/100
    Poor
    3 12 2

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

    Sponsored

    AI & LLM Readiness

    D42/100
    Bot Access
    20/25
    Machine Read.
    11/25
    Schema Data
    0/25
    Citation
    11/25

    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
    navheader/footer
    Text ratio:3%
    Words:466
    Token eff.:Optimal
    Sections/1K:36.5
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary13w
    Descriptive Headingsavg 4.8w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (9)
    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
    12
    Passed
    2
    Critical
    1
    Warnings
    Images & Alt Text
    20/20
    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
    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
    9/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    7/15
    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.
    28/100
    C
    171 mg
    CO₂e / view
    1.4 MB
    Page Weight
    60%
    Cleaner Than
    New Visitor
    196 mg
    vs
    Returning (cached)
    98 mg
    Annual (10K/mo)
    20.6 kg
    Emission Segments
    Data Center
    38 mg
    Network
    41 mg
    Device
    92 mg
    Resource Breakdown
    JavaScript
    93.7 KB
    Images
    456.1 KB
    CSS
    771.3 KB
    Fonts
    2.3 KB
    HTML
    61.9 KB
    Green Hosting Not Verified
    City of Seattle
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    36%Critical
    Interactive

    HTTPS

    No WAF

    261d

    Certificate Details

    Type

    Organization Validated (OV)

    Certificate Authority

    DigiCert Inc

    Key Algorithm

    RSA (4096 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.2

    HTTP Protocol

    HTTP/1.1

    Valid From

    21.01.2026

    Valid Until

    20.01.2027

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    seattlecenter.comwww.seattlecenter.com

    SHA-256 Fingerprint

    2B:07:D3:ED:B8:7F:BA:71:A2:A7:BC:D6:44:C9:6C:48:79:0F:07:53...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🟡 0s(public, max-age=0)
    content-length
    63094
    content-type
    text/html; charset=utf-8
    date
    Mon, 04 May 2026 14:12:35 GMT
    expires
    Mon, 04 May 2026 14:12:34 GMT
    last-modified
    Mon, 04 May 2026 14:12:34 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    75

    SPF
    DKIM
    DMARC

    DMARC Policy

    Reject (Strictest)

    MX Records (1)

    mx.us.etp.fireeyegov.com

    Domain Information

    seattlecenter.com

    Domain Age
    30y 2m

    Created

    04.03.1996

    Expires

    05.03.2031

    Last Updated

    04.01.2026

    Registrar

    Network Solutions, LLC

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    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
    62/100
    Mobile Friendly2 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
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Tungsten + Klinic Slab

    WCAG Partial
    69/100
    Readability
    /30
    23/30

    18px · LH 1.50

    Hierarchy
    /20
    19/20

    6.67x ratio · ✓ H1→H6

    WCAG
    /25
    16/25

    1:1 min contrast

    Performance
    /25
    11/25

    2 fonts · 7 req

    Heading Font

    Tungsten

    Sans120px

    Body Font

    Klinic Slab

    Sans18px

    Contrast Ratio

    1:1

    14 issues

    Reading Comfort

    Dual Sans-Serif

    left aligned
    120px
    h1
    60px
    h2
    30px
    h3
    18px
    p

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

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

    ⚠️ Partial contrast: 14 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 6.7x larger than body text.

    ✅ Lean font stack: 2 font families keeps load times fast.

    GGoogle FontsBuy on MyFonts

    Color Palette

    12 unique colors
    9.02:1 AAA Light
    #ffffff
    Background· 24.5%
    #524551
    Secondary· 4.1%
    #d7e1e5
    Primary· 16.9%
    #cad1c3
    Secondary· 7.8%
    #2c3c40
    Secondary· 7.4%
    #4e676b
    Secondary· 7.4%
    #9eb3a5
    Secondary· 5.3%
    #c9b7ad
    Secondary· 3.9%

    Business & Marketing Stack

    2 Tools Detected

    Growing

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    Social Media

    1
    ShareThisFree

    Social widgets and sharing tools

    2

    Categories

    2

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    29 Resources

    20
    Scripts
    9
    Styles
    6
    Async
    0
    Defer

    Top Script Sources

    local(10)googletagmanager.com(2)count-server.sharethis.com(1)google-analytics.com(1)siteimproveanalytics.com(1)

    Website Identity

    seattlecenter.com

    30 years old

    Katie B. Wilson, Mayor, City of SeattleRandy Engstrom, Acting Seattle Center Director305 Harrison Street, Seattle, WA 98

    Location detected: 🇺🇸 United Statesvia ip
    Network Solutions, LLCen

    Sponsored

    Last analyzed: 04 May 2026 at 14:12

    Historical Analysis & Change Tracking