adlerplanetarium.org

https://adlerplanetarium.org· First analyzed 29 Apr 2026· Updated 29 Apr 2026

Export

Mobile

Sponsored

Hosting Provider

WP Engine

wpengine.com

IP Address

141.193.213.20

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Austin, United States

ASN

AS209242

Organization

WPEngine, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns-cloud-c2.googledomains.com.ns-cloud-c1.googledomains.com.ns-cloud-c3.googledomains.com.ns-cloud-c4.googledomains.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

990 ms10%

Speed Index

1.3 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

6.8 MB

196 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.4

cms

adler

Technology Stack

23 Technologies Detected

Plugins

Jquery Collapse O Matic

Photo Gallery Wp Fullcalendar Wp Pagenavi Apex Notification Bar Lite Popup Maker

Analytics

Libraries

Advertising

Google Ads Twitter Ads

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

Email Marketing

CDN

SEO Analysis

B74/100

Meta Tags9/15

Content10/12

Headings3/8

Technical24/25

E-E-A-T2/7

Images2/7

Links5/5

URL5/5

Social4/5

Freshness4/4

Mobile3/4

Indexability3/3

adlerplanetarium.orgadlerplanetarium.org

Home - Adler Planetarium

Chicago's Adler Planetarium is America's first planetarium and a premiere resource for inspiring the next generation of space explorers.

Title Length24 chars

Recommended: 50-60 chars (~147px / 580px)

Description Length136 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (24/42) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

6 URLs

6 sub-sitemaps

robots.txt

4 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

21/100

Needs Work

6 11

Sponsored

AI & LLM Readiness

D51/100

Bot Access

20/25

Machine Read.

8/25

Schema Data

8/25

Citation

15/25

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:3%

Words:690

Token eff.:Optimal

Sections/1K:13

Depth:1/5

Structured Data

5 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

sameAs entity links

Citation Readiness

Opening Summary159w

Descriptive Headingsavg 3.3w

Canonical URL

Open Graph3/3

Twitter Card1/3

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.

60/100

Passed

Critical

Warnings

Images & Alt Text

15/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

11/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

2/15

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

4/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

4 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

701 mg

CO₂e / view

6.8 MB

Page Weight

Cleaner Than

New Visitor

801 mg

Returning (cached)

401 mg

Annual (10K/mo)

84.1 kg

Emission Segments

Data Center

34 mg

Network

206 mg

Device

461 mg

Resource Breakdown

JavaScript

677.8 KB

Images

5.0 MB

CSS

1.1 MB

Fonts

1.7 KB

HTML

29.7 KB

Other

22.0 KB

Green Hosting Verified

WP Engine

Provider Match

7 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

26%Critical

Interactive

HTTPS

WAF

34d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

05.03.2026

Valid Until

03.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.adlerplanetarium.org

SHA-256 Fingerprint

58:E4:0E:92:F6:DA:43:EB:E5:39:CA:25:68:AA:86:34:69:7B:86:62...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🟡 600s(max-age=600, must-revalidate)

cf-cache-status

DYNAMIC

cf-ray

9f418abfbb634243-EWR

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Google Workspace

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (5)

alt1.aspmx.l.google.com

alt2.aspmx.l.google.com

alt3.aspmx.l.google.com

alt4.aspmx.l.google.com

+1 more

Domain Information

adlerplanetarium.org

Domain Age

27y 5m

Created

11.11.1998

Expires

10.11.2026

Last Updated

31.10.2025

Registrar

Squarespace Domains II LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

79/100

Mobile Friendly6 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

Heroic Condensed Black + Montserrat Medium

WCAG AA

61/100

Readability

/30

26/30

16px · LH 1.56

Hierarchy

/20

7/20

WCAG

/25

21/25

6.97:1 min contrast

Performance

/25

7/25

3 fonts · 15 req

Heading Font

Heroic Condensed Black

Sans

Body Font

Montserrat Medium

Sans16px

Contrast Ratio

6.97:1

WCAG AA (≥4.5:1)

Reading Comfort

~35 CPL

Narrow lines

60px

100px

40px

16px

Minor Second

Scale

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.56 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 39/100. Simplify sentences for wider reach.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 7.0:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

GGoogle Fonts Buy on MyFontsFluid Type (rem)Flesch 39

Color Palette

10 unique colors

Dark

#4b3f4b

Secondary· 4.9%

#080606

Background· 45.3%

#ffda59

Accent· 9.7%

#0e1620

Secondary· 8.7%

#3588b2

Accent· 7.1%

#21283a

Primary· 5.8%

#ebe2a6

Accent· 5.5%

#0f325a

Accent· 4%

Business & Marketing Stack

6 Tools Detected

Enterprise

Marketing Automation

MailchimpSMB

Email marketing and automation platforms

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

AdRollMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(5)youtube.com(2)gstatic.com(2)connect.facebook.net(2)adlerplanetarium.org(2)

Website Identity