What technology does edwardtufte.com use?

edwardtufte.com is built with WordPress, WooCommerce, jQuery, Google Analytics, Meta Pixel.

Is edwardtufte.com secure (HTTPS)?

Yes. edwardtufte.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 7, 2026.

Who hosts edwardtufte.com?

Hosting provider information for edwardtufte.com is not available yet.

What is edwardtufte.com's SEO score?

edwardtufte.com scored 80/100 for SEO in the latest analysis (great).

What is edwardtufte.com's overall website score?

edwardtufte.com has an overall SiteGraph score of 79/100, combining SEO, performance, security, and accessibility.

edwardtufte.com

The Work of Edward Tufte & Graphics Press

Last scanned Jul 26, 2026, 12:49 PM

Overall score

Fair

Summary

Explore the books, courses and original artworks created by renowned data visualization expert Edward Tufte and Graphics Press. This website uses WordPress behind Cloudflare CDN. SEO is good (80/100) and accessibility is good (80/100). Security scores fair (65/100) and performance excellent (90/100). Top issue: No H1 heading found.

Explore the books, courses and original artworks created by renowned data visualization expert Edward Tufte and Graphics Press.

Top issues to fix

9 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-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
robots.txt not found
SEO
Publish /robots.txt with a Sitemap: directive to guide crawlers.

+3 more issues — details in the sections below.

SEO

3 issue(s) found

Performance

1.06 s

Security

HTTPS & header checks

Accessibility

2 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.

Explore the books, courses and original artworks created by renowned data visualization expert Edward Tufte and Graphics Press.

Contact

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

Email: tufte@graphicspress.com

Meta tags

Title: The Work of Edward Tufte & Graphics Press
Description: Explore the books, courses and original artworks created by renowned data visualization expert Edward Tufte and Graphics Press.
Canonical: https://www.edwardtufte.com/
Language
Charset: UTF-8
Viewport: width=device-width
Robots meta: index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
Manifest: https://www.edwardtufte.com/site.webmanifest

Technologies

Detected frameworks, languages, and tools.

WordPress WooCommerce jQuery Google Analytics Meta Pixel

Hosting & CDN

Hosting provider: —
CDN provider: Cloudflare
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: www.edwardtufte.com
Valid from: Jun 9, 2026
Valid to: Sep 7, 2026
Days until expiry: 40
SAN domains: www.edwardtufte.com

Security headers

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

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 0 · H2 2 · H3 0

Links

126 internal · 10 external · 20 broken

Images

22 total · 0 missing alt

Scripts / Styles

32 scripts · 8 stylesheets

JS / CSS size

7.7 KB · 24.6 KB

Page size

101 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

Scan details

Requested URL: https://edwardtufte.com
Final URL: https://www.edwardtufte.com/
HTTP status: 200
HTTP version: HTTP/2
Response time: 1.06 s
HTML size: 101 KB
Redirect chain: https://edwardtufte.com → http://www.edwardtufte.com/ → https://www.edwardtufte.com/

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