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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plesk.com

https://plesk.com· First analyzed 10 Feb 2026· Updated 10 Feb 2026

Export

plesk.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.64.147.135

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

jeff.ns.cloudflare.com.gene.ns.cloudflare.com.

Performance

Page Speed

1.1 MB

222 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

Vue.js

CMS

WordPress

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

35 Technologies Detected

Plugins

Rate My Post Co Authors Plus Wp One Time File Download Wp User Avatar

Elementor

Jet Menu Jet Popup Jet Elements

Elementor

Raven Jet Blog Jet Tabs Wp_Glossary Dynamicconditions

Analytics

Libraries

Other

Frameworks

UI Components

CSS Frameworks

Icon Libraries

Tag Managers

Other

CDN

Languages

Customer Support

Security

SEO Analysis

B70/100

plesk.complesk.com

Hosting Control Panel Licenses | Plesk

Plesk is the only web hosting control panel you'll ever need to build, secure and run websites and applications in the Cloud! Get Plesk Hosting Control Panel...

Description truncated.

Title Length38 chars

Recommended: 50-60 chars

Description Length164 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (37/47)

4 issues found

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Security Score

81%Very Good

Interactive

HTTPS

WAF

46d

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

alt-svc

h3=":443"; ma=86400

cache-control

🔵 2 Days(public, max-age=172800)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9cbde6a33ee17da6-FRA

content-encoding

📦 Gzip(gzip)

Good Warning Issue

Typography & Readability

Montserrat

71/100

Readability

/30

25/40

16px · LH 1.00

Hierarchy

/20

25/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Montserrat

Sans32px

Body Font

Montserrat

Sans16px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

32px

40px

32px

26px

16px

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

⚠️ Tight line spacing (1.00). Consider 1.4-1.6 for better readability.

✅ Strong hierarchy: Headlines are 2.0x 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

6 Tools Detected

Enterprise

Behavior Analytics

HotjarMid-Market

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Affiliate & Partnerships

PartnerStackMid-Market

FirstPromoterSMB

Affiliate networks and partner tracking

A/B Testing & Optimization

VWO (Visual Website Optimizer)Mid-Market

Experimentation and conversion optimization

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

plesk.com(11)googletagmanager.com(2)app.usercentrics.eu(2)js.partnerstack.com(1)static.hotjar.com(1)

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Last analyzed: 10 Feb 2026 at 19:09

Historical Analysis & Change Tracking