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.

Back to Search

harpers.org

https://harpers.org· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

harpers.org

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.26.9.218

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

mitch.ns.cloudflare.com.aida.ns.cloudflare.com.

Performance

Page Speed

411 KB

91 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9

cms

Bubs Wordpress Edition

by Patronage

Technology Stack

12 Technologies Detected

Analytics

Meta Frameworks

Libraries

Other

CSS Frameworks

Icon Libraries

Fonts

Adobe Fonts (Typekit)

Advertising

Google Ads

CDN

Cloudflare

Plugins

Yoast SEO

SEO Analysis

D58/100

harpers.orgharpers.org

Home | Harper's Magazine

Harper’s Magazine, the oldest general-interest monthly in America, explores the issues that drive our national conversation, through long-form narrative jour...

Description truncated.

Title Length24 chars

Recommended: 50-60 chars

Description Length234 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (35/38)

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

191 URLs

robots.txt

4 rules

Sitemap reference found

Sponsored

Security Score

26%Critical

Interactive

HTTPS

WAF

88d

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

12.02.2026

Valid Until

13.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

harpers.orgapi-dev.harpers.org

SHA-256 Fingerprint

F6:FB:F2:45:4A:93:3D:E8:44:19:C9:2E:33:F5:FA:AC:1F:7F:63:5D...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

249

cache-control

🔴 No Cache(private, no-store)

cache-tag

post:2,page:2

cdn-cache-control

public, max-age=14400, s-maxage=600, stale-while-revalidate=...

cf-cache-status

HIT

cf-ray🇩🇪 Frankfurt

9cdb5e75a8e0dbd4-FRA

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

smtp.google.com

Domain Information

harpers.org

Domain Age

30y 1m

Created

05.01.1996

Expires

04.01.2030

Last Updated

10.11.2024

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

garamond

61/100

Readability

/30

32/40

18px · LH 1.20

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

garamond

Serif

Body Font

garamond

Serif18px

Contrast Ratio

Reading Comfort

~33 CPL

Needs attention

26px

20px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Good performance: Using 1 font families keeps load times fast.

✅ Consistent design: Single font family with weight variations is a modern best practice.

⚠️ Cramped layout: 129 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

wp.harpers.org(13)connect.facebook.net(2)securepubads.g.doubleclick.net(2)local(1)googletagmanager.com(1)

Website Identity

Facebook X (Twitter)Instagram

Sponsored

Last analyzed: 14 Feb 2026 at 08:59

Historical Analysis & Change Tracking