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

jhu.edu

https://jhu.edu· First analyzed 10 Feb 2026· Updated 10 Feb 2026

Export

jhu.edu

Mobile

Sponsored

Hosting Provider

Johns Hopkins University

IP Address

128.220.193.2

Server Location

🇺🇸 Baltimore, United States

ASN

AS5723

Organization

Johns Hopkins University

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ens1.jhmi.edu.ens1.jhu.edu.

Performance

Page Speed

12.5 MB

76 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.6.2

cms

Technology Stack

16 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Sentry

Libraries

Other

CSS Frameworks

Icon Libraries

Fonts

Adobe Fonts (Typekit)

Tag Managers

Advertising

CDN

Languages

Security

SEO Analysis

B74/100

jhu.edujhu.edu

Johns Hopkins University

Johns Hopkins, founded in 1876, is America's first research university and home to nine world-class academic divisions working together as one university

Title Length24 chars

Recommended: 50-60 chars

Description Length153 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

3 issues found

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Sponsored

Security Score

71%Good

Interactive

HTTPS

WAF

62d

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

date

Tue, 10 Feb 2026 23:24:56 GMT

content-type

text/html; charset=UTF-8

content-encoding

📦 Gzip(gzip)

x-powered-by

PHP/8.3.30

cf-edge-cache

cache, platform=wordpress

link

<https://www.jhu.edu/wp-json/>; rel="https://api.w.org/", <h...

Good Warning Issue

Typography & Readability

tahoma + sans-serif

70/100

Readability

/30

32/40

19px · LH 1.40

Hierarchy

/20

18/25

2.2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

tahoma

Sans42px

Body Font

sans-serif

Sans19px

Contrast Ratio

Reading Comfort

~41 CPL

Needs attention

42px

65px

21px

19px

Major Second

Scale

✅ Excellent readability: 19px body text is ideal for all devices.

✅ Strong hierarchy: Headlines are 2.2x larger than body text.

✅ Protected text on images: Using text-shadow for readability.

⚠️ Cramped layout: 38 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

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Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

jhu.edu(13)googletagmanager.com(3)static.ads-twitter.com(1)siteimproveanalytics.com(1)gstatic.com(1)

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Last analyzed: 10 Feb 2026 at 23:25

Historical Analysis & Change Tracking