smithsonianeducation.org

https://smithsonianeducation.org· First analyzed 06 May 2026· Updated 06 May 2026

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Hosting Provider

Smithsonian Institution

IP Address

160.111.244.170

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Washington, United States

ASN

AS25829

Organization

Smithsonian Institution

Nameservers

a9-64.akam.net.a28-65.akam.net.a26-66.akam.net.a24-67.akam.net.+2 more

Performance

Core Web Vitals

Weight

First Contentful Paint

1.1 s10%

Speed Index

1.4 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

3.9 MB

135 requests

Image Optimization

Lazy LoadUploadcare

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

Infrastructure

Hosting

Smithsonian Institution

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

11 Technologies Detected

CSS Frameworks

Analytics

Libraries

Icon Libraries

Fonts

Adobe Fonts (Typekit)

Tag Managers

Email Marketing

Security

Customer Support

SEO Analysis

C60/100

Meta Tags9/15

Content11/12

Headings6/8

Technical15/25

E-E-A-T0/7

Images3/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile3/4

Indexability3/3

smithsonianeducation.orgsmithsonianeducation.org

Smithsonian Learning Lab: Discover, Create, Share

No description available for this page.

Title Length49 chars

Recommended: 50-60 chars (~291px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description — important for click-through rates in SERPs

10 issues found

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Crawlability

Sitemap

Type: index

2 URLs

2 sub-sitemaps

robots.txt

4 rules

Allows all crawlers

Local SEO

Local Search Readiness

6/100

Poor

2 13 2

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

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AI & LLM Readiness

F35/100

Bot Access

20/25

Machine Read.

8/25

Schema Data

0/25

Citation

7/25

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:4%

Words:1,770

Token eff.:Optimal

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary14w

Descriptive Headingsavg 2.6w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

AI readiness recommendation preview...

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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.

68/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

15/20

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

14/15

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.

3 recommendations

•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.

15/100

491 mg

CO₂e / view

3.9 MB

Page Weight

15%

Cleaner Than

New Visitor

562 mg

Returning (cached)

281 mg

Annual (10K/mo)

59.0 kg

Emission Segments

Data Center

110 mg

Network

118 mg

Device

264 mg

Resource Breakdown

JavaScript

867.8 KB

Images

2.6 MB

CSS

340.4 KB

HTML

78.3 KB

Other

1.7 KB

Green Hosting Not Verified

Smithsonian Institution

8 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

255d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Internet2

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

16.01.2026

Valid Until

16.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (20)

misc.si.edu*.nisbase.orgabout.biodiversitylibrary.orgadmin.biodiversitylibrary.orgbeta.admin.biodiversitylibrary.orgbeta.biodiversitylibrary.orgbiodiversitylibrary.orgbiogeodb.stri.si.edu+12 more

SHA-256 Fingerprint

24:F6:8C:74:C7:12:61:8E:A4:A8:2A:C1:C2:22:D6:82:3B:CD:9A:B6...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

content-type

text/html

date

Wed, 06 May 2026 07:50:45 GMT

etag

"0ce17e05ebed91:0"

last-modified

Mon, 24 Jul 2023 18:44:28 GMT

transfer-encoding

chunked

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

MX Records (1)

smithsonianeducation-org.mail.protection.outlook.com

Domain Information

smithsonianeducation.org

Domain Age

23y 3m

Created

29.01.2003

Expires

29.01.2031

Last Updated

14.08.2024

Registrar

Network Solutions, 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.

77/100

Mobile Friendly19 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, maximum-scale=1

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Open Sans

WCAG Partial

63/100

Readability

/30

17/30

14px · LH 1.30

Hierarchy

/20

17/20

4.14x ratio

WCAG

/25

13/25

1:1 min contrast

Performance

/25

16/25

2 fonts · 4 req

Heading Font

Open Sans

Sans58px

Body Font

Open Sans

Sans14px

Contrast Ratio

1:1

6 issues

Reading Comfort

~38 CPL

Narrow lines

58px

45px

20px

24px

14px

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

⚠️ Tight line spacing (1.30). Increase to 1.4–1.6 for better readability.

⚠️ Hard to read: Flesch score 45/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 6 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 4.1x larger than body text.

AAdobe Fonts Buy on MyFontsFlesch 45

Color Palette

10 unique colors

Dark

#222222

Text· 27.3%

#001d3d

Primary· 15.299999999999999%

#4e493c

Text· 11.6%

#667fa6

Secondary· 9%

#a7bcc5

Secondary· 6.6%

#f2eee1

Secondary· 6.1%

#b08f86

Secondary· 5.7%

#72585c

Secondary· 3.7%

Business & Marketing Stack

3 Tools Detected

Advanced

Marketing Automation

MailchimpSMB

Email marketing and automation platforms

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

29 Resources

Scripts

Styles

Async

Defer

Top Script Sources

learninglab.si.edu(8)gstatic.com(2)googletagmanager.com(2)google.com(2)logs1.smithsonian.museum(1)

Website Identity

smithsonianeducation.org

23 years old

Location detected: 🇺🇸 United Statesvia ip

Network Solutions, LLC📧 Microsoft 365en

Social Profiles

LinkedIn YouTube

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Last analyzed: 06 May 2026 at 07:51

Historical Analysis & Change Tracking