lettersofnote.com

Letters of Note | Shaun Usher | Substack

Last scanned Aug 4, 2026, 5:00 AM · 20 views

94

Overall score

Excellent

Summary

Nothing but history's most interesting letters. This website uses Express hosted on Cloudflare behind Cloudflare CDN. SEO is excellent (100/100) and accessibility is excellent (100/100). Security scores good (85/100) and performance excellent (90/100).

Nothing but history's most interesting letters. Click to read Letters of Note, by Shaun Usher, a Substack publication.

United States

Hosted on Cloudflare

Top issues to fix

2 issues found

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.

100

SEO

0 issue(s) found

90

Performance

34 ms

85

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Score history

0 overall since Jul 27, 2026

Overall: 94
SEO: 100
Security: 85
Performance: 90
Accessibility: 100

Organization

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

Nothing but history's most interesting letters. Click to read Letters of Note, by Shaun Usher, a Substack publication.

Meta tags

Title: Letters of Note | Shaun Usher | Substack
Description: Nothing but history's most interesting letters. Click to read Letters of Note, by Shaun Usher, a Substack publication.
Canonical: https://news.lettersofnote.com/
Language: en
Charset: utf-8
Viewport: width=device-width, initial-scale=1, maximum-scale=1, user-scalable=0, viewport-fit=cover
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

Express Node.js Google Analytics Cloudflare Analytics Google Ads

Hosting & CDN

Hosting provider: Cloudflare
CDN provider: Cloudflare
IP address: 172.64.151.232
ASN: AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)

DNS records

Type	Value
A	172.64.151.232 104.18.36.24
AAAA	2606:4700:4406::ac40:97e8 2606:4700:4401::6812:2418
MX	—
TXT	—
NS	—
CAA	—
CNAME	target.substack-custom-domains.com
IPv6 support	Yes

TLS / SSL certificate

Version: TLS 1.3
Issuer: Google Trust Services
Subject: news.lettersofnote.com
Valid from: Jul 3, 2026
Valid to: Oct 1, 2026
Days until expiry: 58
SAN domains: news.lettersofnote.com

Security headers

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

Compression: gzip · 3 cookie(s) observed

Content & assets

Headings

H1 1 · H2 0 · H3 0

Links

35 internal · 26 external · 0 broken

Images

19 total · 0 missing alt

Scripts / Styles

115 scripts · 24 stylesheets

JS / CSS size

583 KB · 723 KB

Page size

112 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 15
sitemap.xml: Found
URLs in sitemap: 599

SEO issues

No SEO issues detected.

Scan details

Requested URL: https://lettersofnote.com
Final URL: https://news.lettersofnote.com/
HTTP status: 200
HTTP version: HTTP/2
Response time: 32 ms
HTML size: 112 KB
Redirect chain: https://lettersofnote.com → https://news.lettersofnote.com/

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Frequently asked questions

What technology does lettersofnote.com use?: lettersofnote.com is built with Express, Node.js, Google Analytics, Cloudflare Analytics, Google Ads.
Is lettersofnote.com secure (HTTPS)?: Yes. lettersofnote.com uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 1, 2026.
Who hosts lettersofnote.com?: lettersofnote.com is hosted on Cloudflare, behind Cloudflare CDN.
What is lettersofnote.com's SEO score?: lettersofnote.com scored 100/100 for SEO in the latest analysis (excellent).
What is lettersofnote.com's overall website score?: lettersofnote.com has an overall SiteGraph score of 94/100, combining SEO, performance, security, and accessibility.
Has lettersofnote.com's score changed over time?: lettersofnote.com's overall score has stayed steady at 94/100 since Jul 27, 2026.