Content & assets
Headings
H1 1 · H2 9 · H3 2
Links
82 internal · 24 external · 5 broken
Images
76 total · 0 missing alt
Scripts / Styles
8 scripts · 2 stylesheets
JS / CSS size
4.2 MB · 1.3 MB
Page size
87.7 KB
loc.gov
Home | Library of Congress
Last scanned Jul 14, 2026, 1:29 PM
86
Overall score
Great
Summary
This website uses Shopify hosted on Cloudflare behind Cloudflare CDN. SEO is good (85/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance fair (60/100). Top issue: Missing canonical link.
85
SEO
2 issue(s) found
60
Performance
42 ms
100
Security
HTTPS & header checks
100
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Meta tags
- Title
- Home | Library of Congress
- Description
- The world's largest library. View historic photos, maps, books and more. Contact experts for help with research. Plan a visit. Home of U.S. Copyright Office.
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width,initial-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 104.17.6.58
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- www.loc.gov
- Valid from
- Jun 14, 2026
- Valid to
- Sep 12, 2026
- Days until expiry
- 59
- SAN domains
- www.loc.gov
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: none · 0 cookie(s) observed
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 15
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Missing canonical link
- No structured data (JSON-LD) found
Accessibility issues
No accessibility issues detected.
Careers
View careers page
Scan details
- Requested URL
- https://loc.gov
- Final URL
- https://www.loc.gov/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 41 ms
- HTML size
- 87.7 KB
- Redirect chain
- https://loc.gov → https://www.loc.gov/
Frequently asked questions
- What technology does loc.gov use?
- loc.gov is built with Shopify, jQuery.
- Is loc.gov secure (HTTPS)?
- Yes. loc.gov uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Sep 12, 2026.
- Who hosts loc.gov?
- loc.gov is hosted on Cloudflare, behind Cloudflare CDN.
- What is loc.gov's SEO score?
- loc.gov scored 85/100 for SEO in the latest analysis (great).
- What is loc.gov's overall website score?
- loc.gov has an overall SiteGraph score of 86/100, combining SEO, performance, security, and accessibility.
- Is loc.gov hiring?
- Yes. loc.gov has 32 open roles listed on their careers page.
OpenGraph & Twitter Card
OpenGraph
Twitter Card