llnl.gov
Lawrence Livermore National Laboratory
Last scanned Aug 1, 2026, 5:00 AM · 8 views
Overall score
Great
Summary
Lawrence Livermore National Laboratory uses innovative science, engineering and technology to solve the most difficult national security problems. This website uses Cloudflare Analytics behind Cloudflare CDN. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance excellent (90/100). Top issue: Meta description longer than 160 characters.
Lawrence Livermore National Laboratory uses innovative science, engineering and technology to solve the most difficult national security problems. Learn more about our work, people and more.
Top issues to fix
6 issues found
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEOAdd og:title/og:description/og:image so shared links render a proper preview card.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
20 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
5 issue(s) found
Performance
1.29 s
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
0 overall since Jul 25, 2026
- Overall
- 89
- SEO
- 70
- Security
- 100
- Performance
- 90
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
Lawrence Livermore National Laboratory uses innovative science, engineering and technology to solve the most difficult national security problems. Learn more about our work, people and more.
Meta tags
- Title
- Lawrence Livermore National Laboratory
- Description
- Lawrence Livermore National Laboratory uses innovative science, engineering and technology to solve the most difficult national security problems. Learn more about our work, people and more.
- Canonical
- https://www.llnl.gov/
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1.0
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- Cloudflare
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.2
- Issuer
- DigiCert Inc
- Subject
- *.llnl.gov
- Valid from
- Jan 7, 2026
- Valid to
- Feb 3, 2027
- Days until expiry
- 186
- SAN domains
- *.llnl.gov
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 9 · H3 7
Links
70 internal · 22 external · 20 broken
Images
17 total · 0 missing alt
Scripts / Styles
8 scripts · 8 stylesheets
JS / CSS size
8.3 KB · 0 B
Page size
130 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Meta description longer than 160 characters
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://llnl.gov
- Final URL
- https://www.llnl.gov/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 1.28 s
- HTML size
- 130 KB
- Redirect chain
- https://llnl.gov → https://www.llnl.gov/
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Frequently asked questions
- What technology does llnl.gov use?
- llnl.gov is built with Cloudflare Analytics.
- Is llnl.gov secure (HTTPS)?
- Yes. llnl.gov uses TLS 1.2 with a certificate issued by DigiCert Inc, valid until Feb 3, 2027.
- Who hosts llnl.gov?
- Hosting provider information for llnl.gov is not available yet.
- What is llnl.gov's SEO score?
- llnl.gov scored 70/100 for SEO in the latest analysis (fair).
- What is llnl.gov's overall website score?
- llnl.gov has an overall SiteGraph score of 89/100, combining SEO, performance, security, and accessibility.
- Has llnl.gov's score changed over time?
- llnl.gov's overall score has stayed steady at 89/100 since Jul 25, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card