What does StackOptic analyze?

StackOptic runs 18 analysis modules on any public website from a single URL. It detects 7,000+ technologies (CMS, frameworks, analytics, payments, CDN, hosting), evaluates SSL certificates and HTTP security headers with grades from A+ to F, measures Core Web Vitals (LCP, CLS, TBT, FCP), audits SEO meta tags and structured data, checks email security (SPF, DKIM, DMARC), analyzes AI & LLM readiness including bot access and llms.txt validation, extracts color palettes and typography, estimates carbon footprint, and generates permanent shareable reports.

Does it work on sites behind Cloudflare or bot protection?

Yes. StackOptic uses a real browser engine that loads pages exactly like a human visitor — executing JavaScript, rendering CSS, and handling redirects. This allows it to bypass Cloudflare, LiteSpeed, Sucuri, and other bot protection systems where traditional crawlers and HTTP-only tools fail.

What do I get on the free plan?

The free plan includes 5 analyses per day with access to all 18 modules, full scores, technology detection, and security grades. Every report is permanently accessible via a unique shareable URL — no login required to view. No credit card needed. AI-powered insights, re-analysis, PDF/JSON export, and comparison features are available on Pro ($24/mo) and Agency ($99/mo) plans.

What is AI & LLM readiness analysis?

This module evaluates how visible and citable your website is to AI search engines like ChatGPT, Perplexity, Google AI Overviews, and Claude. It audits access permissions for 8 major AI bots, validates llms.txt and llms-full.txt files, scores citation-ready content structure, and analyzes structured data (JSON-LD) for GEO readiness — helping you rank in the next generation of search.

How long does an analysis take?

Most analyses complete in under 10 seconds. StackOptic runs all 18 modules in parallel using a real browser session, so you get technology detection, security audit, performance metrics, SEO analysis, and AI readiness scoring simultaneously.

How accurate are the results?

Detection is based on real browser execution — DOM inspection, JavaScript runtime analysis, HTTP headers, and DNS records. With 7,000+ technology signatures and Lighthouse-calibrated performance scoring, StackOptic achieves high accuracy for mainstream technologies.

What security checks are performed?

The security module evaluates SSL/TLS certificates, 12+ HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy, Referrer-Policy), HTTPS enforcement, and email authentication (SPF, DKIM, DMARC). Each site receives a letter grade from A+ to F with specific remediation steps.

Do you store the websites I analyze?

StackOptic only stores publicly available information that any visitor to a website would see — HTML content, HTTP headers, DNS records, and screenshots. We do not access private data, log in to websites, or perform any intrusive testing.

Back to Search

llnl.gov

https://llnl.gov· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

llnl.gov

Mobile

Sponsored

Hosting Provider

Lawrence Livermore National Laboratory

IP Address

198.128.246.5

Server Location

🇺🇸 El Cerrito, United States

ASN

AS292

Organization

Lawrence Livermore National Laboratory

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns0.llnl.gov.adns1.es.net.adns2.es.net.

Performance

Page Speed

4.4 MB

58 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Lawrence Livermore National Laboratory

CDN

Cloudflare

Technology Stack

8 Technologies Detected

Analytics

Meta Frameworks

Libraries

CSS Frameworks

Icon Libraries

CDN

SEO Analysis

B70/100

llnl.govllnl.gov

Lawrence Livermore National Laboratory

Lawrence Livermore National Laboratory uses innovative science, engineering and technology to solve the most difficult national security problems. Learn more...

Description truncated.

Title Length38 chars

Recommended: 50-60 chars

Description Length190 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

2,097 URLs

robots.txt

53 rules

Sponsored

Security Score

81%Very Good

Interactive

HTTPS

WAF

355d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

07.01.2026

Valid Until

03.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (1)

*.llnl.gov

SHA-256 Fingerprint

33:FB:41:5F:B0:AE:28:10:4D:B1:BA:EC:C6:C6:2A:FE:66:99:A8:AD...

Upgrade to view header details

HTTP Headers

Developer Console

age

cache-control

🟡 6 Hours(public, max-age=21600)

cf-cache-status

REVALIDATED

cf-ray🇩🇪 Frankfurt

9cd5df6ab805d344-FRA

content-encoding

📦 Gzip(gzip)

content-language

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mxb-00379502.gslb.gpphosted.com

mxa-00379502.gslb.gpphosted.com

Domain Information

llnl.gov

Domain Age

28y 4m

Created

02.10.1997

Expires

22.08.2026

Last Updated

15.09.2025

Registrar

get.gov

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

open sans

69/100

Readability

/30

40/40

16px · LH 1.40

Hierarchy

/20

8/25

1.25x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

open sans

Sans20px

Body Font

open sans

Sans16px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

20px

36px

20px

18px

16px

Minor Second

Scale

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

✅ Good performance: Using 1 font families keeps load times fast.

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Growing

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Sponsored

Scripts & Styles

17 Resources

Scripts

Styles

Async

Defer

Top Script Sources

youtube.com(2)dap.digitalgov.gov(2)local(2)googletagmanager.com(1)analytics.llnl.gov(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube

Sponsored

Last analyzed: 13 Feb 2026 at 16:59

Historical Analysis & Change Tracking