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

hss.edu

https://hss.edu· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

hss.edu

Sponsored

Hosting Provider

Episerver Stockholm

IP Address

217.114.94.2

Server Location

🇸🇪 Stockholm, Sweden

ASN

AS30811

Organization

Episerver Stockholm

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns1.hss.edu.ns2.hss.edu.

Performance

Page Speed

1.2 MB

66 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Bootstrap

Infrastructure

Hosting

Episerver Stockholm

CDN

Cloudflare

Technology Stack

7 Technologies Detected

CSS Frameworks

Libraries

Icon Libraries

Analytics

Other

CDN

SEO Analysis

A+90/100

hss.eduhss.edu

HSS | Hospital for Special Surgery | #1 for Orthopedics

HSS is the #1 hospital in the U.S. for orthopedics, ranked #3 in the U.S. for rheumatology, and is the best pediatric orthopedic hospital in NY, CT and NJ. H...

Description truncated.

Title Length55 chars

Recommended: 50-60 chars

Description Length196 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

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Crawlability

Sitemap

Type: standard

3,208 URLs

robots.txt

19 rules

Sitemap reference found

Sponsored

Security Score

26%Critical

Interactive

HTTPS

WAF

43d

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+H3

Valid From

04.01.2026

Valid Until

04.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.hss.edu

SHA-256 Fingerprint

C8:1C:98:EA:75:C2:F9:27:6A:A7:E3:CF:36:EE:D9:39:B6:A9:40:BA...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9d085bcd89664d80-FRA

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Thu, 19 Feb 2026 20:01:52 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mxa-0021d201.gslb.pphosted.com

mxb-0021d201.gslb.pphosted.com

Domain Information

hss.edu

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

Inter

54/100

Readability

/30

40/40

16px · LH 1.80

Hierarchy

/20

11/25

1.3x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Inter

Sans21px

Body Font

Inter

Sans16px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

21px

26px

21px

16px

Minor Second

Scale

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

✅ Optimal line spacing: 1.80 ratio ensures comfortable reading.

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

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

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

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Matomo (Piwik)Mid-Market

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

A/B Testing & Optimization

OptimizelyEnterprise

Experimentation and conversion optimization

Sponsored

Scripts & Styles

18 Resources

Scripts

Styles

Async

Defer

Top Script Sources

hss.containers.piwik.pro(2)local(2)s.swiftypecdn.com(1)perfalytics.com(1)js.monitor.azure.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn

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Last analyzed: 19 Feb 2026 at 20:02

Historical Analysis & Change Tracking