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hsdl.org

hsdl.org | Homeland Security Digital Library at NPS

Last scanned Aug 4, 2026, 7:00 AM · 11 views

83

Overall score

Great

Summary

The nation’s premier collection of resources related to homeland security policy, strategy, and organizational management. This website uses WordPress. SEO is good (85/100) and accessibility is excellent (100/100). Security scores fair (70/100) and performance good (80/100). Top issue: Multiple H1 headings found.

The nation’s premier collection of resources related to homeland security policy, strategy, and organizational management.

Top issues to fix

7 issues found · 2 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.

  • Missing X-Frame-Options header

    Security

    Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

  • Multiple H1 headings found

    SEO

    Keep a single H1 per page and demote the others to H2/H3.

  • robots.txt not found

    SEO

    Publish /robots.txt with a Sitemap: directive to guide crawlers.

  • sitemap.xml not found

    SEO

    Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

+1 more issue — details in the sections below.

85

SEO

3 issue(s) found

80

Performance

2.53 s

70

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Score history

+5 overall since Jul 27, 2026

Overall
83
SEO
85
Security
70
Performance
80
Accessibility
100

Organization

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

The nation’s premier collection of resources related to homeland security policy, strategy, and organizational management.

X (Twitter)YouTubeFacebook

Contact

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

Meta tags

Title
hsdl.org | Homeland Security Digital Library at NPS
Description
The nation’s premier collection of resources related to homeland security policy, strategy, and organizational management.
Canonical
https://www.hsdl.org/c/
Language
en-US
Charset
UTF-8
Viewport
width=device-width, initial-scale=1
Robots meta
index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
HSDL | The nation’s premier collection of homeland security documents
og:description
The nation’s premier collection of documents related to homeland security policy, strategy, and organizational management.
og:type
website
og:url
https://www.hsdl.org/c/

Twitter Card

twitter:card
summary_large_image
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

Vue.jsPHPWordPressjQueryGoogle AnalyticsApache

Hosting & CDN

Hosting provider
—
CDN provider
—
IP address
—
ASN
—

DNS records

TypeValue
A—
AAAA—
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Sectigo Limited
Subject
chds.us
Valid from
Nov 19, 2025
Valid to
Dec 20, 2026
Days until expiry
138
SAN domains
chds.us, hsaj.org, hsdl.org, www.chds.us, www.hsaj.org, www.hsdl.org

Security headers

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

Compression: none · 1 cookie(s) observed

Content & assets

Headings

H1 4 · H2 13 · H3 3

Links

46 internal · 8 external · 20 broken

Images

24 total · 0 missing alt

Scripts / Styles

31 scripts · 38 stylesheets

JS / CSS size

25.5 KB · 214 KB

Page size

354 KB

Robots.txt & Sitemap

robots.txt
Not found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Multiple H1 headings found
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://hsdl.org
Final URL
https://www.hsdl.org/c/
HTTP status
200
HTTP version
HTTP/2
Response time
2.52 s
HTML size
354 KB
Redirect chain
https://hsdl.org → https://hsdl.org/c/ → https://www.hsdl.org/c/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does hsdl.org use?
hsdl.org is built with Vue.js, PHP, WordPress, jQuery, Google Analytics, Apache.
Is hsdl.org secure (HTTPS)?
Yes. hsdl.org uses TLS 1.3 with a certificate issued by Sectigo Limited, valid until Dec 20, 2026.
Who hosts hsdl.org?
Hosting provider information for hsdl.org is not available yet.
What is hsdl.org's SEO score?
hsdl.org scored 85/100 for SEO in the latest analysis (great).
What is hsdl.org's overall website score?
hsdl.org has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.
Has hsdl.org's score changed over time?
hsdl.org's overall score has improved by 5 points (from 78 to 83) since Jul 27, 2026.