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nbm.org

https://nbm.org· First analyzed 01 May 2026· Updated 01 May 2026
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nbm.org
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Hosting Provider

Microsoft Azure
azure.microsoft.com

IP Address

52.167.49.153

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Boydton, United States

ASN

AS8075

Organization

Microsoft Azure Cloud (eastus2)

Server

Nginx

Nameservers

ns1.aplus.net.ns3.aplus.net.ns2.aplus.net.

Performance

94

Core Web Vitals

Weight

First Contentful Paint
1.2 s10%
Speed Index
1.6 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
11 MB
73 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv6.9.4
cms
Beaver Builder Themev1.7.19.2Custom
by The Beaver Builder Team
View Theme

Technology Stack

16 Technologies Detected

Plugins

8
Beaver Builder
Events Calendar ProBbpowerpack
WooCommerce
Bbwp Functions Plugin
WP Rocket
The Events Calendar
Beaver Builder

Libraries

2
jQueryv3.7.1
Animate.css

CSS Frameworks

2
Bootstrapv3.4.1
Tailwind CSS

UI Components

1
Owl Carousel

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Web Servers

1
Nginx

SEO Analysis

B78/100
23
8
1
Meta Tags7/15
Content10/12
Headings8/8
Technical23/25
E-E-A-T5/7
Images4/7
Links2/5
URL5/5
Social3/5
Freshness4/4
Mobile4/4
Indexability3/3
N
nbm.orgnbm.org

Homepage | National Building Museum

No description available for this page.

Title Length35 chars

Recommended: 50-60 chars (~212px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

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

9 issues found

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Crawlability

Sitemap

Type: index

20 URLs

20 sub-sitemaps

robots.txt

26 rules

Sitemap reference found

Local SEO

Local Search Readiness

24/100
Needs Work
7 10

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AI & LLM Readiness

C60/100
Bot Access
20/25
Machine Read.
16/25
Schema Data
10/25
Citation
14/25

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.txtinvalid
llms-full.txt
Semantic HTML
Heading Hierarchy
nav
Text ratio:3%
Words:1,485
Token eff.:Optimal
Sections/1K:6.1
Depth:1/5

Structured Data

4 JSON-LD
Article×1.2microdataPerson×1.3microdataOrganization×1.1WebSiteBreadcrumbList

Citation Readiness

Opening Summary126w
Descriptive Headingsavg 4.4w
Canonical URL
Open Graph1/3
Twitter Card2/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
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.
A
86/100
15
Passed
2
Critical
1
Warnings
Images & Alt Text
18/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
20/20
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
5/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

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.
40/100
F
1.14 g
CO₂e / view
11.0 MB
Page Weight
5%
Cleaner Than
New Visitor
1.30 g
vs
Returning (cached)
650 mg
Annual (10K/mo)
136.5 kg
Emission Segments
Data Center
56 mg
Network
334 mg
Device
748 mg
Resource Breakdown
JavaScript
169.6 KB
Images
10.1 MB
CSS
630.0 KB
Fonts
90.8 KB
HTML
29.6 KB
Green Hosting Verified
Microsoft Azure
Provider Match
6 recommendations
  • •Carbon footprint recommendation preview...
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D

Security Score

56%Poor
Interactive

HTTPS

No WAF

221d

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/2

Valid From

20.11.2025

Valid Until

08.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

nbm.orgwww.nbm.org

SHA-256 Fingerprint

56:4B:EA:E1:BC:03:6F:1B:4A:69:DA:B7:63:DB:2C:FB:73:02:A7:61...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-cache, no-store)
content-encoding
📦 Gzip(gzip)
content-length
29992
content-type
text/html; charset=UTF-8
date
Fri, 01 May 2026 16:34:55 GMT
last-modified
Fri, 01 May 2026 16:14:30 GMT
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

90

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

nbm-org.mail.protection.outlook.com

Domain Information

nbm.org

Domain Age
30y 7m

Created

20.09.1995

Expires

19.09.2027

Last Updated

17.04.2026

Registrar

Hostopia Canada Corp

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

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.
B
71/100
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
1 recommendation
  • •Mobile compatibility recommendation preview...
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Typography & Readability

haboro-condensed + Verdana

WCAG Partial
65/100
Readability
/30
21/30

19px · LH 1.60

Hierarchy
/20
16/20

4.21x ratio · ✓ H1→H6

WCAG
/25
16/25

1:1 min contrast

Performance
/25
12/25

4 fonts · 4 req

Heading Font

haboro-condensed

Sans80px

Body Font

Verdana

Sans19px

Contrast Ratio

1:1

30 issues

Reading Comfort

~34 CPL

Narrow lines
80px
h1
60px
h2
35px
h3
30px
h4
19px
p

✅ Excellent readability: 19px body text is ideal for all devices.

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 30/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 30 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 4.2x larger than body text.

GGoogle FontsBuy on MyFontsFluid Type (rem)Flesch 30

Color Palette

15 unique colors
Dark
#000000
Text· 12.600000000000001%
#b57439
Accent· 7.4%
#e1cbb4
Secondary· 7.4%
#76543c
Secondary· 7.2%
#563726
Secondary· 7.1%
#ee5638
Accent· 6.3%
#f7f2ec
Primary· 6.2%
#2a1309
Accent· 6%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

26 Resources

16
Scripts
10
Styles
2
Async
7
Defer

Top Script Sources

nbm.org(14)gstatic.com(1)google.com(1)

Website Identity

National Building Museum

Organization
info@nbm.org
nbm.org/
30 years old
Location detected: 🇺🇸 United Statesvia ip
Hostopia Canada Corp📧 Microsoft 365en-US

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Last analyzed: 01 May 2026 at 16:35

Historical Analysis & Change Tracking