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

heinonline.org

https://heinonline.org· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

heinonline.org

Sponsored

Hosting Provider

HostPapa

hostpapa.com

IP Address

192.3.137.187

Server Location

🇺🇸 Buffalo, United States

ASN

AS36352

Organization

Hudson Valley Host

Server

Nginx

Nameservers

edns1.ultradns.biz.edns1.ultradns.com.edns1.ultradns.net.edns1.ultradns.org.

Performance

Page Speed

2.8 MB

110 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.1

cms

hello-elementorCustom

Technology Stack

14 Technologies Detected

Plugins

Libraries

Analytics

UI Components

Other

CSS Frameworks

Icon Libraries

Tag Managers

Web Servers

SEO Analysis

A88/100

heinonline.orgheinonline.org

About - HeinOnline

Learn about HeinOnline, a premier online research platform providing access to multidisciplinary current and historical documents.

Title Length18 chars

Recommended: 50-60 chars

Description Length130 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

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Crawlability

Sitemap

Type: index

robots.txt

35 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

36%Critical

Interactive

HTTPS

No WAF

132d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Network Solutions L.L.C.

Key Algorithm

RSA (4096 bit)

Signature

SHA-384 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

29.05.2025

Valid Until

29.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.heinonline.orgheinonline.org

SHA-256 Fingerprint

30:CE:46:2E:62:5A:36:03:A6:5D:A8:EC:88:2C:DD:B1:0C:F2:7C:F6...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

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HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🔴 No Cache(max-age=0, no-cache, s-maxage=10)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-length

144

content-type

text/html

Good Warning Issue

Email Infrastructure

Barracuda

Score

SPF

DKIM

DMARC

MX Records (2)

d306133b.ess.barracudanetworks.com

d306133a.ess.barracudanetworks.com

Domain Information

heinonline.org

Domain Age

25y 10m

Created

07.04.2000

Expires

07.04.2032

Last Updated

07.04.2022

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Roboto Regular + Roboto

65/100

Readability

/30

32/40

14px · LH 1.50

Hierarchy

/20

8/25

1.14x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

Roboto Regular

Sans16px

Body Font

Roboto

Sans14px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

16px

15px

18px

35px

14px

Perfect Fourth

Scale

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

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

⚠️ Cramped layout: 29 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

home.heinonline.org(13)youtube.com(2)googletagmanager.com(2)google-analytics.com(1)gstatic.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube

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Last analyzed: 17 Feb 2026 at 11:35

Historical Analysis & Change Tracking