lean.org

https://lean.org· First analyzed 28 Apr 2026· Updated 28 Apr 2026

Export

lean.org

Mobile

Sponsored

Hosting Provider

Fastly, Inc.

IP Address

151.101.2.159

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Montreal, Canada

ASN

AS54113

Organization

Fastly, Inc.

Server

Flywheel/5.1.0

CDN

Fastly

Nameservers

ns15.domaincontrol.com.ns16.domaincontrol.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

476 ms10%

Speed Index

619 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.5 MB

105 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.4

cms

LEI Custom Theme

by Blue Flame Thinking

Technology Stack

21 Technologies Detected

Plugins

Cookie Law Info

Woocommerce Product Bundles

Woo Discount Rules Pro

WooCommerce

Woocommerce Anti Fraud

Woocommerce Google Analytics Integration

Analytics

Facebook Pixel Microsoft Clarity

Advertising

LinkedIn Ads Microsoft Advertising

Libraries

UI Components

CSS Frameworks

Icon Libraries

Tag Managers

Marketing

Platforms

SEO Analysis

A87/100

Meta Tags15/15

Content11/12

Headings3/8

Technical24/25

E-E-A-T5/7

Images4/7

Links5/5

URL5/5

Social4/5

Freshness4/4

Mobile4/4

Indexability3/3

lean.orglean.org

Lean Enterprise Institute | Learn Lean Thinking & Practice

Lean Enterprise Institute is a non-profit dedicated to spreading Lean Thinking & Practice through education, partnerships, and community.

Title Length58 chars

Recommended: 50-60 chars (~344px / 580px)

Description Length137 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

10 URLs

10 sub-sitemaps

robots.txt

4 rules

Sitemap reference found

Local SEO

Local Search Readiness

22/100

Needs Work

6 11

Sponsored

AI & LLM Readiness

D57/100

Bot Access

20/25

Machine Read.

14/25

Schema Data

7/25

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.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

navheader/footer

Text ratio:6%

Words:1,070

Token eff.:Optimal

Sections/1K:12.1

Depth:2/5

Structured Data

4 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary12w

Descriptive Headingsavg 4.6w

Canonical URL

Open Graph2/3

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.

79/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

13/20

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

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

12/15

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

3 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.

46/100

255 mg

CO₂e / view

2.5 MB

Page Weight

30%

Cleaner Than

New Visitor

291 mg

Returning (cached)

146 mg

Annual (10K/mo)

30.6 kg

Emission Segments

Data Center

13 mg

Network

75 mg

Device

167 mg

Resource Breakdown

JavaScript

265.0 KB

Images

882.7 KB

CSS

1.2 MB

Fonts

153.4 KB

HTML

22.9 KB

Green Hosting Verified

Fastly, Inc.

Provider Match

7 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

88d

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

26.04.2026

Valid Until

25.07.2026

Subject Alternative Names (2)

lean.orgwww.lean.org

SHA-256 Fingerprint

6F:2C:4C:FF:F9:B6:39:A9:B1:D5:8A:15:0A:83:00:2D:73:AE:37:42...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

content-encoding

📦 Gzip(gzip)

content-length

23147

content-type

text/html; charset=UTF-8

date

Tue, 28 Apr 2026 11:28:03 GMT

fastly-restarts

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (3)

mx2-us1.ppe-hosted.com

lean-org.mail.protection.outlook.com

mx1-us1.ppe-hosted.com

Domain Information

lean.org

Domain Age

28y 9m

Created

25.07.1997

Expires

24.07.2027

Last Updated

07.09.2025

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

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.

76/100

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, maximum-scale=5.0

Typography & Readability

Univers LT W01

WCAG Partial

61/100

Readability

/30

24/30

16px · LH 1.50

Hierarchy

/20

7/20

WCAG

/25

17/25

1.01:1 min contrast

Performance

/25

13/25

1 font · 5 req

Heading Font

Univers LT W01

Sans

Body Font

Univers LT W01

Sans16px

Contrast Ratio

1.01:1

25 issues

Reading Comfort

~39 CPL

Narrow lines

72px

26px

16px

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

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

⚠️ Partial contrast: 25 elements below WCAG AA threshold (min 1.0:1).

❌ 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).

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFontsFluid Type (rem)

Color Palette

12 unique colors

2.26:1 Fail Light

#ffffff

Background· 77.5%

#a7afa1

Border· 2%

#2773a8

Primary· 4.7%

#262d35

Secondary· 3.9%

#145093

Accent· 2.8%

#358fc2

Accent· 2.7%

#ded485

Accent· 1.8%

#f3f2e8

Secondary· 1.7%

Business & Marketing Stack

9 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Microsoft ClarityFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

LinkedIn AdsEnterprise

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

CookiebotMid-Market

GDPR Cookie ConsentFree

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

lean.org(5)googletagmanager.com(3)connect.facebook.net(2)snap.licdn.com(1)scripts.clarity.ms(1)

Website Identity

Lean Enterprise Institute

Organization

Lean Enterprise Institute is a non-profit dedicated to spreading Lean Thinking & Practice through education, partnerships, and community.

www.lean.org/

28 years old

Location detected: 🇨🇦 Canadavia ip

GoDaddy.com, LLC📧 Microsoft 365en-US

Social Profiles

Facebook X (Twitter)Instagram LinkedIn YouTube

Sponsored

Last analyzed: 28 Apr 2026 at 11:28

Historical Analysis & Change Tracking