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pacsci.org

https://pacsci.org· First analyzed 31 May 2026· Updated 31 May 2026
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pacsci.org
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Mobile

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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

pdns13.domaincontrol.com.pdns14.domaincontrol.com.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
888 ms10%
Speed Index
1.2 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
9.1 MB
106 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv7.0
cms
Gessov4.7.3Custom
by Forum One
View Theme

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

12 Technologies Detected

Analytics

4
Google Analytics
Google Analytics 4
Facebook PixelMicrosoft Clarity

Plugins

3
Accordion BlocksCookie Law Info
Yoast SEO

Libraries

1
jQueryv3.7.1

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

SEO Analysis

B75/100
23
8
0
Meta Tags5/15
Content10/12
Headings8/8
Technical24/25
E-E-A-T0/7
Images5/7
Links4/5
URL5/5
Social4/5
Freshness4/4
Mobile3/4
Indexability3/3
P
pacsci.orgpacsci.org

Pacific Science Center

Science Center in Seattle

Title Length22 chars

Recommended: 50-60 chars (~129px / 580px)

Description Length25 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    7 URLs

    7 sub-sitemaps

    robots.txt

    3 rules

    Sitemap reference found

    Allows all crawlers

    Local SEO

    Local Search Readiness

    21/100
    Needs Work
    6 10 1

    Sponsored

    AI & LLM Readiness

    D47/100
    Bot Access
    20/25
    Machine Read.
    7/25
    Schema Data
    4/25
    Citation
    16/25

    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:3%
    Words:817
    Token eff.:Optimal

    Structured Data

    4 JSON-LD
    WebSiteBreadcrumbListSearchAction

    Citation Readiness

    Opening Summary28w
    Descriptive Headingsavg 4.5w
    Canonical URL
    Open Graph3/3
    Twitter Card1/3
    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
    79/100
    14
    Passed
    1
    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
    15/15
    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.
    1 recommendation
    • •Accessibility recommendation preview...
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    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.
    27/100
    F
    1.15 g
    CO₂e / view
    9.1 MB
    Page Weight
    5%
    Cleaner Than
    New Visitor
    1.31 g
    vs
    Returning (cached)
    657 mg
    Annual (10K/mo)
    138.0 kg
    Emission Segments
    Data Center
    257 mg
    Network
    276 mg
    Device
    617 mg
    Resource Breakdown
    JavaScript
    271.3 KB
    Images
    4.3 MB
    CSS
    457.0 KB
    Fonts
    1.3 KB
    HTML
    51.3 KB
    Other
    4.0 MB
    Green Hosting Not Verified
    Pantheon
    7 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    36%Critical
    Interactive

    HTTPS

    No WAF

    57d

    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

    29.04.2026

    Valid Until

    28.07.2026

    Subject Alternative Names (4)

    pacificsciencecenter.orgpacsci.orgwww.pacificsciencecenter.orgwww.pacsci.org

    SHA-256 Fingerprint

    A5:5A:8F:D0:08:C2:ED:65:FA:E7:4F:D5:F7:30:47:7C:82:0B:7F:82...

    Top Recommendations

    Security recommendation preview

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    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    age
    2869
    cache-control
    🔵 1 Week(public, max-age=604800)
    content-encoding
    📦 Gzip(gzip)
    content-length
    52247
    content-type
    text/html; charset=UTF-8
    Good Warning Issue

    Email Infrastructure

    Microsoft 365

    Score

    95

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (1)

    pacsci-org.mail.protection.outlook.com

    Domain Information

    pacsci.org

    Domain Age
    31y 12m

    Created

    09.06.1994

    Expires

    08.06.2026

    Last Updated

    23.07.2025

    Registrar

    GoDaddy.com, LLC

    DNSSEC
    Not Enabled

    Privacy & Compliance

    CookieYes

    Cookie Consent Banner
    CookieYes
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: CookieYes
    Privacy policy page linked
    Data Protection Officer 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.
    A
    85/100
    Mobile Friendly29 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
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    gt_pressurabold + moderat

    WCAG Partial
    66/100
    Readability
    /30
    16/30

    14px · LH 1.25

    Hierarchy
    /20
    17/20

    4.57x ratio · ✓ H1→H6

    WCAG
    /25
    17/25

    1:1 min contrast

    Performance
    /25
    16/25

    2 fonts · 7 req

    Heading Font

    gt_pressurabold

    Sans64px

    Body Font

    moderat

    Sans14px

    Contrast Ratio

    1:1

    2 issues

    Reading Comfort

    ~83 CPL

    Wide lines
    64px
    h1
    40px
    h2
    32px
    h3
    14px
    p

    ⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

    ⚠️ Tight line spacing (1.25). Increase to 1.4–1.6 for better readability.

    ⚠️ Wide lines: ~83 chars/line. Use max-width: 65ch for comfortable reading.

    ⚠️ Hard to read: Flesch score 38/100. Simplify sentences for wider reach.

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

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

    GGoogle FontsBuy on MyFontsFluid Type (rem)Flesch 38

    Color Palette

    9 unique colors
    21:1 AAA Light
    #ffffff
    Background· 33.300000000000004%
    #000000
    Text· 21.6%
    #003b5d
    Primary· 14%
    #66838b
    Secondary· 7.9%
    #2aaa86
    Accent· 7.5%
    #1b7ba8
    Accent· 5.1%
    #afc5bf
    Secondary· 4.2%
    #4bac90
    Secondary· 3.5%

    Business & Marketing Stack

    8 Tools Detected

    Enterprise

    Marketing Automation

    1
    ActiveCampaignMid-Market

    Email marketing and automation platforms

    Behavior Analytics

    3
    Google Tag ManagerFree
    Google AnalyticsFree
    Microsoft ClarityFree

    User behavior and product analytics

    Advertising

    2
    Facebook PixelMid-Market
    Reddit PixelMid-Market

    Ad platforms and retargeting pixels

    Privacy & Cookies

    2
    CookieYesSMB
    GDPR Cookie ConsentFree

    Cookie consent and privacy compliance tools

    4

    Categories

    8

    Total Tools

    0

    Enterprise

    3

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    24 Resources

    20
    Scripts
    4
    Styles
    13
    Async
    0
    Defer

    Top Script Sources

    pacificsciencecenter.org(5)google-analytics.com(3)connect.facebook.net(2)googletagmanager.com(2)scripts.clarity.ms(1)

    Website Identity

    Pacific Science Center

    Curiosity ignites at PacSci. New discoveries for all ages, every day. Join us in-person and online at pacsci.org.

    pacificsciencecenter.org/
    31 years old
    Location detected: 🇺🇸 United Statesvia ip
    GoDaddy.com, LLC📧 Microsoft 365en-US

    Sponsored

    Last analyzed: 31 May 2026 at 18:29

    Historical Analysis & Change Tracking

    pacsci.org Technology Stack - Built With jQuery, Tailwind CSS, Google Fonts, Google Analytics, Google Analytics 4 | StackOptic | StackOptic