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

cert.org

https://cert.org· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

cert.org

Mobile

Sponsored

Hosting Provider

Super.so

super.so

IP Address

147.72.252.242

Server Location

🇺🇸 Pittsburgh, United States

ASN

AS36407

Organization

Pittsburgh Supercomputing Center

Nameservers

ns-1794.awsdns-32.co.uk.ns-28.awsdns-03.com.ns-916.awsdns-50.net.ns-1403.awsdns-47.org.

Performance

Page Speed

1.8 MB

46 requests

Image Optimization

Lazy LoadWebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

Infrastructure

Hosting

Super.so

Technology Stack

6 Technologies Detected

Analytics

CSS Frameworks

Icon Libraries

Tag Managers

Advertising

SEO Analysis

A85/100

cert.orgcert.org

CERT

The Software Engineering Institute is leading and advancing software and cybersecurity to solve the nation's toughest problems.

Title Length4 chars

Recommended: 50-60 chars

Description Length127 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

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Sponsored

Security Score

84%Very Good

Interactive

HTTPS

No WAF

18d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Internet2

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

02.02.2026

Valid Until

04.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (5)

www.sei.cmu.eduinsights.sei.cmu.edupartner-application.sei.cmu.eduresources.sei.cmu.edusei.cmu.edu

SHA-256 Fingerprint

17:73:D4:45:A0:E9:2B:85:0B:77:54:0C:FA:DC:D1:F7:53:16:1F:15...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

cache-control

🟡 600s(max-age=600)

content-length

131312

content-security-policy

frame-ancestors 'self';

content-type

text/html; charset=utf-8

cross-origin-opener-policy

same-origin

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

tingley.sei.cmu.edu

tilton.sei.cmu.edu

Domain Information

cert.org

Domain Age

34y 1m

Created

31.12.1991

Expires

18.11.2034

Last Updated

27.11.2024

Registrar

Amazon Registrar, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

ui-sans-serif

81/100

Readability

/30

40/40

20px · LH 1.40

Hierarchy

/20

18/25

2.4x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

ui-sans-serif

Sans48px

Body Font

ui-sans-serif

Sans20px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

48px

30px

20px

✅ Excellent readability: 20px body text is ideal for all devices.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.4x 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.

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

17 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(3)googletagmanager.com(2)snap.licdn.com(1)cdn.cookielaw.org(1)cdn.jsdelivr.net(1)

Website Identity

Facebook X (Twitter)LinkedIn YouTube

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Last analyzed: 14 Feb 2026 at 12:02

Historical Analysis & Change Tracking