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.

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seti.org

https://seti.org· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

seti.org

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.20.24.118

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

leonidas.ns.cloudflare.com.amy.ns.cloudflare.com.

Performance

Page Speed

11 MB

94 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Tailwind CSS

CMS

Umbraco

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

15 Technologies Detected

Analytics

Frameworks

Libraries

Meta Frameworks

UI Components

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

Other

CDN

SEO Analysis

D58/100

seti.orgseti.org

Home

No description available for this page.

Title Length4 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description - important for click-through rates
• Missing H1 tag - every page should have one H1
• Many images missing alt text (33/48)

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

Sponsored

A+

Security Score

91%Excellent

Interactive

HTTPS

WAF

34d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

25.12.2025

Valid Until

25.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

seti.org*.seti.org

SHA-256 Fingerprint

0D:3B:C2:DC:5C:A8:12:07:ED:48:14:8C:3D:73:77:E7:00:EA:6E:09...

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 1800s(max-age=1800, must-revalidate)

cf-cache-status

EXPIRED

cf-ray🇩🇪 Frankfurt

9d05deb099882bae-FRA

content-encoding

⚡ Brotli(br)

content-security-policy

default-src *; script-src * 'unsafe-inline' 'unsafe-eval'; s...

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

seti-org.mail.protection.outlook.com

Domain Information

seti.org

Domain Age

30y 3m

Created

31.10.1995

Expires

30.10.2028

Last Updated

29.08.2025

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

CookieYes

Cookie Consent Banner

CookieYes

GDPR Indicators

Cookie consent banner detected

CMP: CookieYes

Typography & Readability

Filson Pro

59/100

Readability

/30

25/40

96px · LH 1.10

Hierarchy

/20

11/25

0.63x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Filson Pro

Sans61px

Body Font

Filson Pro

Sans96px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

61px

48px

16px

96px

✅ Excellent readability: 96px body text is ideal for all devices.

⚠️ Tight line spacing (1.10). Consider 1.4-1.6 for better readability.

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

✅ 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.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

7 Tools Detected

Enterprise

CRM Systems

SalesforceEnterprise

Customer Relationship Management platforms

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

CookieYesSMB

Cookie consent and privacy compliance tools

A/B Testing & Optimization

VWO (Visual Website Optimizer)Mid-Market

Experimentation and conversion optimization

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(6)connect.facebook.net(3)pi.pardot.com(2)googletagmanager.com(2)cdn-cookieyes.com(2)

Website Identity

Facebook X (Twitter)Instagram LinkedIn Pinterest Mastodon Threads Bluesky

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Last analyzed: 19 Feb 2026 at 12:47

Historical Analysis & Change Tracking