jwz.org
jwz.org
Last scanned Jul 26, 2026, 5:18 AM
Overall score
Fair
Summary
Jamie Zawinski was one of the founders of Netscape and Mozilla.org, was the primary developer of Lucid Emacs, and wrote most of your screen savers. This website is hosted on AWS. SEO is fair (60/100) and accessibility is good (80/100). Security scores excellent (100/100) and performance good (80/100). Top issue: Meta description longer than 160 characters.
Jamie Zawinski was one of the founders of Netscape and Mozilla.org, was the primary developer of Lucid Emacs, and wrote most of your screen savers. Today he is the proprietor of DNA Lounge, an all ages dance club and live music venue in San Francisco.
- United States
- Hosted on AWS
Top issues to fix
9 issues found · 2 high priority
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 (4.7s)
PerformanceUse a CDN, enable caching/compression, and cut render-blocking assets — every extra second costs conversions.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEOAdd og:title/og:description/og:image so shared links render a proper preview card.
+3 more issues — details in the sections below.
SEO
6 issue(s) found
Performance
4.72 s
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Organization
Company details published in this site's own structured data.
Jamie Zawinski was one of the founders of Netscape and Mozilla.org, was the primary developer of Lucid Emacs, and wrote most of your screen savers. Today he is the proprietor of DNA Lounge, an all ages dance club and live music venue in San Francisco.
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- jwz.org
- Description
- Jamie Zawinski was one of the founders of Netscape and Mozilla.org, was the primary developer of Lucid Emacs, and wrote most of your screen savers. Today he is the proprietor of DNA Lounge, an all ages dance club and live music venue in San Francisco.
- Canonical
- Language
- Charset
- Viewport
- width=device-width, user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1
- Robots meta
- noai, noimageai
- Manifest
Technologies
Detected frameworks, languages, and tools.
No technologies detected.
Hosting & CDN
- Hosting provider
- AWS
- CDN provider
- —
- IP address
- 3.16.178.106
- ASN
- AS16509 (AMAZON-02 - Amazon.com, Inc., US)
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
- jwz.org
- Valid from
- Jun 7, 2026
- Valid to
- Sep 5, 2026
- Days until expiry
- 40
- SAN domains
- jwz.com, jwz.net, jwz.org, www.jwz.com, www.jwz.net, www.jwz.org, www2.jwz.org
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyMissing
- Permissions-PolicyEnabled
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 0 · H2 0 · H3 0
Links
5 internal · 2 external · 1 broken
Images
0 total · 0 missing alt
Scripts / Styles
2 scripts · 1 stylesheets
JS / CSS size
776 B · 6.9 KB
Page size
44.8 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 19
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Meta description longer than 160 characters
- Missing canonical link
- No H1 heading found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- sitemap.xml not found
Accessibility issues
- No H1 heading found
- Missing <html lang> attribute
Scan details
- Requested URL
- https://jwz.org
- Final URL
- https://www.jwz.org/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 4.72 s
- HTML size
- 44.8 KB
- Redirect chain
- https://jwz.org → https://www.jwz.org/
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Frequently asked questions
- What technology does jwz.org use?
- We did not detect any specific technologies for jwz.org in the latest scan.
- Is jwz.org secure (HTTPS)?
- Yes. jwz.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 5, 2026.
- Who hosts jwz.org?
- jwz.org is hosted on AWS.
- What is jwz.org's SEO score?
- jwz.org scored 60/100 for SEO in the latest analysis (fair).
- What is jwz.org's overall website score?
- jwz.org has an overall SiteGraph score of 79/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card