lean.org
Lean Enterprise Institute | Learn Lean Thinking & Practice
Last scanned Aug 4, 2026, 9:00 AM · 10 views
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. SEO is good (80/100) and accessibility is excellent (90/100). Security scores fair (70/100) and performance good (80/100). Top issue: No H1 heading found.
Lean Enterprise Institute is a non-profit dedicated to spreading Lean Thinking & Practice through education, partnerships, and community.
Top issues to fix
8 issues found · 4 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Slow estimated load (4.5s)
PerformanceUse a CDN, enable caching/compression, and cut render-blocking assets — every extra second costs conversions.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
+2 more issues — details in the sections below.
SEO
3 issue(s) found
Performance
4.54 s
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Score history
-1 overall since Jul 27, 2026
- Overall
- 80
- SEO
- 80
- Security
- 70
- Performance
- 80
- Accessibility
- 90
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.
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.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| 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
- 50
- 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
74 internal · 9 external · 20 broken
Images
24 total · 0 missing alt
Scripts / Styles
42 scripts · 10 stylesheets
JS / CSS size
11.7 KB · 17.8 KB
Page size
108 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- No H1 heading found
- robots.txt not found
- sitemap.xml not found
Accessibility 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
- 4.53 s
- HTML size
- 108 KB
- Redirect chain
- https://lean.org → https://www.lean.org/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does lean.org use?
- lean.org is built with WordPress, WooCommerce, jQuery, Google Analytics.
- 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?
- Hosting provider information for lean.org is not available yet.
- What is lean.org's SEO score?
- lean.org scored 80/100 for SEO in the latest analysis (great).
- What is lean.org's overall website score?
- lean.org has an overall SiteGraph score of 80/100, combining SEO, performance, security, and accessibility.
- Has lean.org's score changed over time?
- lean.org's overall score has declined by 1 point (from 81 to 80) since Jul 27, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card