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

sandia.gov

https://sandia.gov· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

sandia.gov

Sponsored

Hosting Provider

Sandia National Laboratories

IP Address

198.102.154.50

Server Location

🇺🇸 Albuquerque, United States

ASN

AS377

Organization

Sandia National Laboratories

Nameservers

ns9.sandia.gov.ns1.ca.sandia.gov.ns2.ca.sandia.gov.ns8.sandia.gov.

Performance

Page Speed

6.2 MB

97 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Tailwind CSS

CMS

WordPress

Infrastructure

Hosting

Sandia National Laboratories

Technology Stack

6 Technologies Detected

Analytics

Libraries

CSS Frameworks

Icon Libraries

Plugins

SEO Analysis

C68/100

sandia.govsandia.gov

Sandia National Laboratories

Exceptional service in the national interest Our unique responsibilities in the nuclear weapons program create a foundation from which we leverage capabiliti...

Description truncated.

Title Length28 chars

Recommended: 50-60 chars

Description Length383 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (14/24)

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

3 URLs

robots.txt

208 rules

Sitemap reference found

Sponsored

Security Score

74%Good

Interactive

HTTPS

No WAF

54d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

11.04.2025

Valid Until

11.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (12)

*.sandia.gov*.ca.sandia.gov*.followmyhealth.sandia.gov*.mdl.sandia.gov*.ran.sandia.gov*.web.ca.sandia.gov*.web.sandia.gov*.webdev.ca.sandia.gov+4 more

SHA-256 Fingerprint

E4:03:57:AF:5A:E1:0F:8C:2D:AC:42:94:3C:04:E1:43:2F:F8:27:A0...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

cache-control

🔴 No Cache(no-store)

connection

content-encoding

📦 Gzip(gzip)

content-length

22102

content-security-policy

default-src 'self' *.sandia.gov; base-uri 'self' ; frame-src...

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (3)

smtp03asnl.sandia.gov

smtp04asnl.sandia.gov

smtp05asnl.sandia.gov

Domain Information

sandia.gov

Domain Age

28y 4m

Created

02.10.1997

Expires

25.08.2026

Last Updated

30.08.2025

Registrar

get.gov

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

Segoe UI

84/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

18/25

3x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Segoe UI

Sans48px

Body Font

Segoe UI

Sans16px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

48px

20px

24px

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.0x larger than body text.

✅ Good performance: Using 2 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

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

sandia.gov(16)dap.digitalgov.gov(2)siteimproveanalytics.com(1)googletagmanager.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn

Sponsored

Last analyzed: 16 Feb 2026 at 15:06

Historical Analysis & Change Tracking