npshistory.com website report
National Park Service History Electronic Library & Archive
Last scanned · 1 view
Overall score
Great
About npshistory.com
npshistory.com is a website. It describes itself as “Electronic Library and Archive containing digital editions of documents published by or about the National Park Service and the National…”.
Score profile
Top issues to fix
10 issues found · 3 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing viewport meta tag
AccessibilityAdd <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
+4 more issues — details in the sections below.
How it compares
npshistory.com scores higher overall than 45% of the 163,243 sites we have scanned.
vs. All scanned sites
163,243 sitesThe dot is this site; the tick is the typical (median) score for the group. The number on the right is the percentile: the share of the group this site scores above.
Technology stack
No technologies were detected in the latest scan.
Hosting & DNS
- IP address
- —
- ASN
- —
- IPv6
- Not supported
- HTTP
- HTTP/1.1
Show DNS record values
TXT record contents are not republished; only their count is shown.
Security
npshistory.com uses TLS 1.3 with a certificate valid for 32 more days and sets 4 of 6 recommended security headers.
Security headers4 of 6 set
- HSTSForces HTTPS
- CSPBlocks injected scripts
- X-Frame-OptionsStops clickjacking
- X-Content-TypeStops MIME sniffing
- Referrer-PolicyLimits URL leakage
- Permissions-PolicyRestricts browser features
TLS certificate
- Names covered
- 1
- Cookies set
- 0
Email security
npshistory.com scores F for email security, with SPF and no DMARC policy.
- SPFWeak
Marks unlisted senders as suspicious (~all) but does not reject them.
- DMARCNot set
No DMARC policy: forged mail is not told to be rejected.
- MTA-STSNot set
Not published; mail to this domain can be downgraded to plaintext.
- BIMINot set
Not published (optional).
Performance & carbon
npshistory.com scores 100/100 for performance, with an estimated load time of 0.8 s. A visit emits an estimated 0.06 g of CO2 (grade A+).
Page weight
- HTML 150 KB
- CSS 6.7 KB
- Est. load
- 825 ms
- Response
- 822 ms
- Scripts / CSS
- 0 / 1
Carbon per visitA+
0.06 g CO2 per uncached view
Estimate from the Sustainable Web Design model. HTML, JavaScript and CSS only; images, video and fonts are not measured. Treat it as a lower bound for comparing pages, not an audit.
SEO & accessibility
npshistory.com scores 55/100 for SEO and 85/100 for accessibility, with 7 SEO issues to fix.
Heading structure
No H1 found.
Image alt text
22 images · 0 without alt text · 0 lazy-loaded
Links
- Internal 212
- External 32
- Broken 20
SEO issues7
- 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
Accessibility issues2
- No H1 heading found
- Missing viewport meta tag
Technical details
Page metadata, social tags, crawl files and scan information.
Meta tags
- Title
- National Park Service History Electronic Library & Archive
- Description
- Electronic Library and Archive containing digital editions of documents published by or about the National Park Service and the National Parks, National Monuments, National Historic Sites covering their natural and cultural history
- Canonical
- Language
- en
- Robots meta
Crawl files
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
Structured data
No JSON-LD types declared.
- Microdata items
- 0
- RDFa items
- 0
Scan
- Final URL
- https://npshistory.com
- HTTP status
- 200
- Redirects
- https://npshistory.com
- Scanned
- Aug 24, 2026, 1:22 PM
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Frequently asked questions about npshistory.com
- What is npshistory.com?
- npshistory.com is a website. It describes itself as “Electronic Library and Archive containing digital editions of documents published by or about the National Park Service and the National…”.
- Is npshistory.com secure?
- npshistory.com uses TLS 1.3 with a certificate valid for 32 more days and sets 4 of 6 recommended security headers.
- Is npshistory.com protected against email spoofing?
- npshistory.com scores F for email security, with SPF and no DMARC policy.
- How does npshistory.com compare with similar sites?
- npshistory.com scores higher overall than 45% of the 163,243 sites we have scanned.
- What is npshistory.com's overall score?
- npshistory.com has an overall SiteGraph score of 81/100, combining SEO (55), performance (100), security (90) and accessibility (85).
Open Graph & Twitter