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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action.com

https://action.com· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

action.com

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.18.9.194

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

gabe.ns.cloudflare.com.athena.ns.cloudflare.com.

Performance

Page Speed

596 KB

57 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Hybrid

🔀 Hybrid

Frontend

Framework

Next.js

Styling

Tailwind CSS

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Progressive Web App

Web Manifest

Technology Stack

8 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Advertising

Google Ads Snapchat Pixel

Meta Frameworks

CSS Frameworks

Tag Managers

CDN

SEO Analysis

C68/100

action.comaction.com

Welcome to the Action website

6000+ products in decoration, cleaning, personal care and more ✓ For less than you expect ✓ Always nearby. Check out our assortment on the Action website. | ...

Description truncated.

Title Length29 chars

Recommended: 50-60 chars

Description Length214 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (1/1)

4 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

34 rules

Sitemap reference found

Sponsored

A+

Security Score

98%Excellent

Static / Informational

HTTPS

WAF

46d

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

07.01.2026

Valid Until

07.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

action.com*.action.com

SHA-256 Fingerprint

66:ED:37:56:F5:C6:ED:1A:95:81:20:95:5F:D4:6D:66:E0:FF:A6:74...

Upgrade to view header details

HTTP Headers

Developer Console

age

418

cache-control

🟡 0s(public, max-age=0, must-revalidate)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9d0d33a0e94278c0-FRA

content-encoding

📦 Gzip(gzip)

content-security-policy

frame-ancestors 'self' https://*.action.com https://*.conten...

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

action-com.mail.protection.outlook.com

Domain Information

action.com

Domain Age

29y 7m

Created

30.07.1996

Expires

16.05.2027

Last Updated

28.07.2025

Registrar

Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Typography & Readability

Ubuntu

83/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

15/25

1.25x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Ubuntu

Sans20px

Body Font

Ubuntu

Sans16px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

20px

24px

16px

Minor Third

Scale

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

✅ 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

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

12 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)consent.cookiebot.com(2)consentcdn.cookiebot.com(1)static.cloudflareinsights.com(1)googletagmanager.com(1)

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Last analyzed: 20 Feb 2026 at 10:08

Historical Analysis & Change Tracking