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

jci.org

https://jci.org· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

jci.org

Sponsored

Hosting Provider

Linode (Akamai)

linode.com

IP Address

69.164.217.195

Server Location

🇺🇸 Cedar Knolls, United States

ASN

AS63949

Organization

Linode

Server

Apache

Nameservers

ns-480.awsdns-60.com.ns-799.awsdns-35.net.ns-1027.awsdns-00.org.ns-1755.awsdns-27.co.uk.

Performance

Page Speed

854 KB

127 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Linode (Akamai)

Technology Stack

10 Technologies Detected

Meta Frameworks

Libraries

Other

CSS Frameworks

Analytics

Tag Managers

Advertising

Social

Web Servers

Customer Support

SEO Analysis

F23/100

jci.orgjci.org

JCI - Welcome

No description available for this page.

Title Length13 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description - important for click-through rates
• Missing H1 tag - every page should have one H1
• Many images missing alt text (38/75)

8 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

4 rules

Sponsored

Security Score

46%Poor

Interactive

HTTPS

No WAF

77d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

03.02.2026

Valid Until

04.05.2026

Subject Alternative Names (2)

*.jci.orgjci.org

SHA-256 Fingerprint

5C:B5:15:8C:9C:F7:16:90:5D:C2:CC:21:A8:E2:D9:5F:E4:2F:E4:17...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 0s(max-age=0, private, must-revalidate)

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

44921

content-type

text/html; charset=utf-8

date

Mon, 16 Feb 2026 09:34:47 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

aspmx2.googlemail.com

alt2.aspmx.l.google.com

aspmx3.googlemail.com

alt1.aspmx.l.google.com

+1 more

Domain Information

jci.org

Domain Age

29y 10m

Created

04.04.1996

Expires

05.04.2026

Last Updated

11.03.2025

Registrar

NameCheap, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Typography & Readability

klavika-bold + Helvetica Neue

85/100

Readability

/30

40/40

16px · LH 1.60

Hierarchy

/20

15/25

1.12x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

klavika-bold

Sans18px

Body Font

Helvetica Neue

Sans16px

Contrast Ratio

Reading Comfort

~36 CPL

Needs attention

18px

27px

23px

16px

Minor Second

Scale

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

✅ Optimal line spacing: 1.60 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: 47 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Social Media

AddThisFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

api.altmetric.com(11)local(2)google-analytics.com(1)googletagmanager.com(1)googletagservices.com(1)

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Last analyzed: 16 Feb 2026 at 09:35

Historical Analysis & Change Tracking