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 Oct 31, 2026.

Hosting provider information for jwz.org is not available yet.

What is jwz.org's SEO score?

jwz.org scored 55/100 for SEO in the latest analysis (fair).

What is jwz.org's overall website score?

jwz.org has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.

Has jwz.org's score changed over time?

jwz.org's overall score has improved by 4 points (from 79 to 83) since Jul 26, 2026.

jwz.org

Last scanned Aug 3, 2026, 1:00 AM · 4 views

Overall score

Great

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. SEO is fair (55/100) and accessibility is good (80/100). Security scores excellent (100/100) and performance excellent (100/100). 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.

Top issues to fix

9 issues found · 1 high priority

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.
Meta description longer than 160 characters
SEO
Trim the meta description to under 160 characters to avoid truncation in search results.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEO
Add og:title/og:description/og:image so shared links render a proper preview card.
robots.txt not found
SEO
Publish /robots.txt with a Sitemap: directive to guide crawlers.

+3 more issues — details in the sections below.

SEO

7 issue(s) found

100

Performance

485 ms

100

Security

HTTPS & header checks

Accessibility

2 issue(s) found

Score history

+4 overall since Jul 26, 2026

Overall: 83
SEO: 55
Security: 100
Performance: 100
Accessibility: 80

Organization

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

Contact

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

Email: .I....p@..g.Np jwz@mastodon.social

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: —
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: jwz.org
Valid from: Aug 2, 2026
Valid to: Oct 31, 2026
Days until expiry: 89
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 · 7 broken

Images

0 total · 0 missing alt

Scripts / Styles

2 scripts · 1 stylesheets

JS / CSS size

374 B · 1.1 KB

Page size

44.9 KB

Robots.txt & Sitemap

robots.txt: Not found
Disallow rules: 0
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
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://jwz.org
Final URL: https://www.jwz.org/
HTTP status: 200
HTTP version: HTTP/2
Response time: 485 ms
HTML size: 44.9 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 Oct 31, 2026.
Who hosts jwz.org?: Hosting provider information for jwz.org is not available yet.
What is jwz.org's SEO score?: jwz.org scored 55/100 for SEO in the latest analysis (fair).
What is jwz.org's overall website score?: jwz.org has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.
Has jwz.org's score changed over time?: jwz.org's overall score has improved by 4 points (from 79 to 83) since Jul 26, 2026.