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

exploratorium.edu

https://exploratorium.edu· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

exploratorium.edu

Mobile

Sponsored

Hosting Provider

Pantheon

pantheon.io

IP Address

23.185.0.1

Server Location

🇺🇸 San Francisco, United States

ASN

AS54113

Organization

Pantheon

Server

Nginx

CDN

Fastly

Nameservers

ns-797.awsdns-35.net.ns-1127.awsdns-12.org.ns-1733.awsdns-24.co.uk.ns-415.awsdns-51.com.

Performance

Page Speed

703 KB

90 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Technology Stack

11 Technologies Detected

Analytics

Libraries

Fonts

Adobe Fonts (Typekit)Adobe Fonts

Meta Frameworks

CSS Frameworks

Tag Managers

Web Servers

SEO Analysis

A88/100

exploratorium.eduexploratorium.edu

Experience the Exploratorium at Pier 15

Experience the Exploratorium. Let your curiosity roam free through hundreds of exhibits in our six spacious indoor and outdoor galleries at Pier 15, San Fran...

Description truncated.

Title Length39 chars

Recommended: 50-60 chars

Description Length163 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

2 URLs

robots.txt

49 rules

Sponsored

Security Score

81%Very Good

Static / Informational

HTTPS

No WAF

107d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

01.05.2025

Valid Until

31.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.exploratorium.edu

SHA-256 Fingerprint

BA:8B:F3:3D:60:47:8A:22:18:D0:3E:7C:94:50:80:BB:00:F8:B8:B9...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

554

alt-svc

h3=":443"; ma=86400

cache-control

🟡 1 Hours(max-age=3600, public)

content-encoding

📦 Gzip(gzip)

content-language

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

alt4.aspmx.l.google.com

alt1.aspmx.l.google.com

alt2.aspmx.l.google.com

aspmx.l.google.com

+1 more

Domain Information

exploratorium.edu

DNSSEC

Not Enabled

Privacy & Compliance

TrustArc

Cookie Consent Banner

TrustArc

GDPR Indicators

Cookie consent banner detected

CMP: TrustArc

Data Protection Officer mentioned

Typography & Readability

akzidenz-grotesk-next + sans-serif

76/100

Readability

/30

32/40

16px · LH 1.25

Hierarchy

/20

21/25

3.52x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

akzidenz-grotesk-next

Sans56px

Body Font

sans-serif

Sans16px

Contrast Ratio

Reading Comfort

~36 CPL

Needs attention

56px

47px

32px

16px

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

✅ Strong hierarchy: Headlines are 3.5x larger than body text.

✅ 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.

✅ Protected text on images: Using gradient for readability.

AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

TrustArcEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(8)googletagmanager.com(3)connect.facebook.net(2)app.leadsrx.com(1)tags.srv.stackadapt.com(1)

Website Identity

Facebook Instagram YouTube TikTok

Sponsored

Last analyzed: 13 Feb 2026 at 18:50

Historical Analysis & Change Tracking