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SGSiteGraph

computerhistory.org

Home - CHM

Last scanned Jul 25, 2026, 10:25 AM · 3 views

91

Overall score

Excellent

Summary

This website uses WordPress hosted on Cloudflare behind Cloudflare CDN. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Missing meta description.

United States
Hosted on Cloudflare

Top issues to fix

5 issues found · 2 high priority

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Missing meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • 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.

  • 1 broken link on the page

    SEO

    Fix or remove broken links — they waste crawl budget and erode user trust.

90

SEO

1 issue(s) found

100

Performance

119 ms

75

Security

HTTPS & header checks

100

Accessibility

0 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.

Contact

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

Meta tags

Title
Home - CHM
Description
Canonical
https://computerhistory.org/
Language
en
Charset
utf-8
Viewport
width=device-width, initial-scale=1.0
Robots meta
index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Home
og:description
og:type
website
og:url
https://computerhistory.org/

Twitter Card

twitter:card
summary_large_image
twitter:title
twitter:description

Technologies

Detected frameworks, languages, and tools.

Hosting & CDN

Hosting provider
Cloudflare
CDN provider
Cloudflare
IP address
172.67.178.154
ASN
AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)

DNS records

TypeValue
A
  • 172.67.178.154
  • 104.21.17.220
AAAA
  • 2606:4700:3030::6815:11dc
  • 2606:4700:3035::ac43:b29a
MX
  • computerhistory-org.mail.protection.outlook.com
TXT
NS
  • randy.ns.cloudflare.com
  • mia.ns.cloudflare.com
CAA
CNAME
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Google Trust Services
Subject
computerhistory.org
Valid from
Jun 6, 2026
Valid to
Sep 4, 2026
Days until expiry
41
SAN domains
computerhistory.org, bitsavers.computerhistory.org, *.bitsavers.computerhistory.org

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 11 · H3 0

Links

57 internal · 15 external · 1 broken

Images

13 total · 0 missing alt

Scripts / Styles

28 scripts · 5 stylesheets

JS / CSS size

63.6 KB · 14.4 KB

Page size

95.7 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
0
sitemap.xml
Found
URLs in sitemap
-1

SEO issues

  • Missing meta description

Accessibility issues

No accessibility issues detected.

Careers

View careers page

This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.

Scan details

Requested URL
https://computerhistory.org
Final URL
https://computerhistory.org
HTTP status
200
HTTP version
HTTP/2
Response time
118 ms
HTML size
95.7 KB
Redirect chain
https://computerhistory.org

See something wrong on this report? Request a correction

Frequently asked questions

What technology does computerhistory.org use?
computerhistory.org is built with WordPress, jQuery, Cloudflare Analytics.
Is computerhistory.org secure (HTTPS)?
Yes. computerhistory.org uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Sep 4, 2026.
Who hosts computerhistory.org?
computerhistory.org is hosted on Cloudflare, behind Cloudflare CDN.
What is computerhistory.org's SEO score?
computerhistory.org scored 90/100 for SEO in the latest analysis (excellent).
What is computerhistory.org's overall website score?
computerhistory.org has an overall SiteGraph score of 91/100, combining SEO, performance, security, and accessibility.
Is computerhistory.org hiring?
computerhistory.org has a careers page; check it directly for current openings.