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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mcmaster.com

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

Export

mcmaster.com

Sponsored

Hosting Provider

AT&T Enterprises

IP Address

209.64.25.149

Server Location

🇺🇸 Elmhurst, United States

ASN

AS22034

Organization

AT&T Enterprises

CDN

Nameservers

ns4.mcmaster.com.ns2.mcmaster.com.ns1.mcmaster.com.ns3.mcmaster.com.

Performance

Page Speed

307 KB

53 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

React

CMS

BigCommerce

Infrastructure

Hosting

AT&T Enterprises

CDN

Progressive Web App

Service WorkerApple Touch Icon

Technology Stack

6 Technologies Detected

Customer Support

Frameworks

Libraries

CSS Frameworks

Analytics

SEO Analysis

C62/100

mcmaster.commcmaster.com

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

Title Length13 chars

Recommended: 50-60 chars

Description Length149 chars

Recommended: 120-160 chars

Issues (0)

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

261,935 URLs

robots.txt

49 rules

Sitemap reference found

Sponsored

Security Score

36%Critical

Interactive

HTTPS

No WAF

72d

Certificate Details

Type

Extended Validation (EV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

17.10.2025

Valid Until

30.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (17)

www.mcmaster.comeprocurement.mcmaster.comeprocurementqual.mcmaster.comimages1.mcmaster.comimages1qual.mcmaster.comimages2.mcmaster.comimages2qual.mcmaster.commcmaster.com+9 more

SHA-256 Fingerprint

78:43:82:11:D2:23:5F:B8:52:4A:62:C2:9E:B6:05:72:92:00:A0:66...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache)

content-encoding

⚡ Brotli(br)

content-length

14069

content-type

text/html; charset=utf-8

date

Tue, 17 Feb 2026 22:15:43 GMT

expires

-1

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mx0a-00570c01.pphosted.com

mx0b-00570c01.pphosted.com

Domain Information

mcmaster.com

Domain Age

31y 6m

Created

23.08.1994

Expires

22.08.2028

Last Updated

12.11.2020

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

HelveticaNeueeTextPro-Md + HelveticaNeueeTextPro-Roman

52/100

Readability

/30

12/40

12px · LH 1.30

Hierarchy

/20

13/25

1.58x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

HelveticaNeueeTextPro-Md

Sans19px

Body Font

HelveticaNeueeTextPro-Roman

Sans12px

Contrast Ratio

Reading Comfort

~36 CPL

Needs attention

19px

12px

16px

12px

Minor Second

Scale

❌ Critical: 12px body text is too small. Increase to at least 14px.

✅ Good hierarchy: Clear distinction between headlines and body text.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

⚠️ Cramped layout: 12 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

7 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)

Sponsored

Last analyzed: 17 Feb 2026 at 22:16

Historical Analysis & Change Tracking