lean.org

Lean Enterprise Institute | Learn Lean Thinking & Practice

Last scanned Jul 27, 2026, 9:43 AM · 1 view

81

Overall score

Great

Summary

Lean Enterprise Institute is a non-profit dedicated to spreading Lean Thinking & Practice through education, partnerships, and community. This website uses WordPress hosted on Fastly. SEO is excellent (90/100) and accessibility is excellent (90/100). Security scores fair (70/100) and performance good (75/100). Top issue: No H1 heading found.

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

United States

Hosted on Fastly

Top issues to fix

5 issues found · 3 high priority

Missing Strict-Transport-Security header
Security
Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEO
Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
12 broken links on the page
SEO
Fix or remove broken links — they waste crawl budget and erode user trust.

90

SEO

1 issue(s) found

75

Performance

824 ms

70

Security

HTTPS & header checks

90

Accessibility

1 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

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

LinkedIn X (Twitter)YouTube Instagram Facebook

Contact

Email, phone, and address published on this site's own pages.

Source: https://www.lean.org/contact-us/

Meta tags

Title: Lean Enterprise Institute | Learn Lean Thinking & Practice
Description: Lean Enterprise Institute is a non-profit dedicated to spreading Lean Thinking & Practice through education, partnerships, and community.
Canonical: https://www.lean.org/
Language: en-US
Charset: UTF-8
Viewport: width=device-width, initial-scale=1.0, maximum-scale=5.0
Robots meta: index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
Manifest

Technologies

Detected frameworks, languages, and tools.

WordPress WooCommerce jQuery Google Analytics Google Ads Meta Pixel

Hosting & CDN

Hosting provider: Fastly
CDN provider: —
IP address: 151.101.2.159
ASN: AS54113 (FASTLY - Fastly, Inc., US)

DNS records

Type	Value
A	151.101.2.159
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Let's Encrypt
Subject: lean.org
Valid from: Jun 25, 2026
Valid to: Sep 23, 2026
Days until expiry: 58
SAN domains: lean.org, www.lean.org

Security headers

Strict-Transport-SecurityMissing
Content-Security-PolicyMissing
X-Frame-OptionsMissing
X-Content-Type-OptionsEnabled
Referrer-PolicyEnabled
Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 8 · H3 6

Links

72 internal · 9 external · 12 broken

Images

26 total · 0 missing alt

Scripts / Styles

63 scripts · 10 stylesheets

JS / CSS size

1.6 MB · 371 KB

Page size

107 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 1
sitemap.xml: Found
URLs in sitemap: -1

SEO issues

No H1 heading found

Scan details

Requested URL: https://lean.org
Final URL: https://www.lean.org/
HTTP status: 200
HTTP version: HTTP/2
Response time: 822 ms
HTML size: 107 KB
Redirect chain: https://lean.org → https://www.lean.org/

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Frequently asked questions

What technology does lean.org use?: lean.org is built with WordPress, WooCommerce, jQuery, Google Analytics, Google Ads, Meta Pixel.
Is lean.org secure (HTTPS)?: Yes. lean.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 23, 2026.
Who hosts lean.org?: lean.org is hosted on Fastly.
What is lean.org's SEO score?: lean.org scored 90/100 for SEO in the latest analysis (excellent).
What is lean.org's overall website score?: lean.org has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.