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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zmags.com

https://zmags.com· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

zmags.com

Sponsored

Hosting Provider

HubSpot CMS

hubspot.com

IP Address

199.60.103.112

Server Location

🇺🇸 Cambridge, United States

ASN

AS209242

Organization

HubSpot, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns-1271.awsdns-30.org.ns-1587.awsdns-06.co.uk.ns-324.awsdns-40.com.ns-941.awsdns-53.net.

Performance

Page Speed

80 KB

144 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Magento

Technology Stack

13 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Advertising

LinkedIn Ads Microsoft Advertising

Libraries

UI Components

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

Marketing

CDN

Customer Support

SEO Analysis

C67/100

zmags.comzmags.com

Fastr | The Digital Experience Workspace for Modern Commerce Teams

Build, launch, and optimize digital experiences—fast. Fastr unifies design, personalization, and performance into one powerful workspace.

Title Length66 chars

Recommended: 50-60 chars

Description Length137 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

9 rules

Sitemap reference found

Sponsored

Security Score

66%Fair

Interactive

HTTPS

WAF

50d

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+H3

Valid From

09.01.2026

Valid Until

09.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

getfastr.com

SHA-256 Fingerprint

50:20:C2:8D:86:D2:C3:D4:E5:6F:B5:26:EA:2F:17:84:25:B7:0A:40...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🟡 5s(s-maxage=36000, max-age=5)

cf-ray🇩🇪 Frankfurt

9cf8e72fdbc7d358-FRA

content-encoding

⚡ Brotli(br)

content-security-policy

upgrade-insecure-requests

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)

zmags-com.mail.protection.outlook.com

Domain Information

zmags.com

Domain Age

20y 2m

Created

20.12.2005

Expires

20.12.2026

Last Updated

14.12.2025

Registrar

EuroDNS S.A.

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Typography & Readability

Montserrat + sans-serif

66/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

11/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

Montserrat

Sans0

Body Font

sans-serif

Sans16px

Contrast Ratio

Reading Comfort

~72 CPL

Optimal (45–75)

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ 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.

✅ Optimal line length: ~72 characters per line is comfortable to read.

⚠️ Cramped layout: 90 elements lack adequate spacing.

GGoogle Fonts

Business & Marketing Stack

8 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Marketing Automation

MarketoEnterprise

Email marketing and automation platforms

Behavior Analytics

Lucky OrangeSMB

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

LinkedIn AdsEnterprise

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

28 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(3)j.6sc.co(2)snap.licdn.com(2)ws.zoominfo.com(2)d10lpsik1i8c69.cloudfront.net(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn

Sponsored

Last analyzed: 17 Feb 2026 at 23:01

Historical Analysis & Change Tracking