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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jamesclear.com

https://jamesclear.com· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

jamesclear.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.66.140.27

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

brad.ns.cloudflare.com.beth.ns.cloudflare.com.

Performance

Page Speed

1.1 MB

45 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.8.2

cms

JamesClear Themev1.0

by Rafal Tomal

View Theme

Technology Stack

15 Technologies Detected

Plugins

Wp Bigfoot Numeric Convertkit Better Click To Tweet Optinmonster

Analytics

Fonts

Adobe Fonts (Typekit)Adobe Fonts

Libraries

CSS Frameworks

Email Marketing

Popups & Forms

CDN

SEO Analysis

B70/100

jamesclear.comjamesclear.com

James Clear

James Clear is a writer and speaker. He is the author of the #1 New York Times bestseller Atomic Habits and the popular 3-2-1 newsletter.

Title Length11 chars

Recommended: 50-60 chars

Description Length137 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

26%Critical

Interactive

HTTPS

WAF

55d

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

10.01.2026

Valid Until

10.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

jamesclear.com*.jamesclear.com

SHA-256 Fingerprint

60:52:71:C9:08:4B:97:C8:0C:FA:7D:E2:24:D4:0A:56:AA:CB:17:CD...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

2154016

cache-control

🟡 1 Hours(max-age=3600)

cf-cache-status

HIT

cf-ray🇩🇪 Frankfurt

9cdbeb8c2a9a37d4-FRA

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

aspmx.l.google.com

aspmx3.googlemail.com

alt2.aspmx.l.google.com

aspmx2.googlemail.com

+1 more

Domain Information

jamesclear.com

Domain Age

16y 5m

Created

22.08.2009

Expires

22.08.2026

Last Updated

23.07.2025

Registrar

NameCheap, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

europa + Minion Pro

68/100

Readability

/30

40/40

21px · LH 1.65

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

europa

Sans

Body Font

Minion Pro

Sans21px

Contrast Ratio

Reading Comfort

Dual Sans-Serif

left aligned

36px

21px

✅ Excellent readability: 21px body text is ideal for all devices.

✅ Optimal line spacing: 1.65 ratio ensures comfortable reading.

✅ Protected text on images: Using gradient for readability.

⚠️ Inconsistent alignment: Mix of left/center/right creates visual noise.

AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Enterprise

Marketing Automation

ConvertKitCreator

Email marketing and automation platforms

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

jamesclear.com(8)a.omappapi.com(6)connect.facebook.net(3)f.convertkit.com(2)googletagmanager.com(1)

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Last analyzed: 14 Feb 2026 at 10:35

Historical Analysis & Change Tracking