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.

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interactivebrokers.com

https://interactivebrokers.com· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

Sponsored

Hosting Provider

Verizon Business

IP Address

63.86.206.59

Server Location

🇺🇸 Chicago, United States

ASN

AS40711

Organization

Verizon Business

CDN

Akamai

WAF

Akamai

Nameservers

ndns.interactivebrokers.com.cdns.interactivebrokers.com.

Performance

Page Speed

1.8 MB

68 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Tailwind CSS

Infrastructure

Hosting

Verizon Business

CDN

Akamai

Technology Stack

6 Technologies Detected

CSS Frameworks

Libraries

Icon Libraries

Analytics

Customer Support

SEO Analysis

A82/100

interactivebrokers.cominteractivebrokers.com

Home | Interactive Brokers LLC

Leading online trading solutions for traders, investors and advisors, with direct global access to stocks, options, futures, currencies, bonds and funds. Tra...

Description truncated.

Title Length30 chars

Recommended: 50-60 chars

Description Length234 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

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Crawlability

Sitemap

Type: standard

63 URLs

robots.txt

7 rules

Sitemap reference found

Sponsored

Security Score

76%Good

Interactive

HTTPS

WAF

166d

Certificate Details

Type

Extended Validation (EV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

05.08.2025

Valid Until

04.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

interactivebrokers.combrokerage.ibkr.comcdcdyn.interactivebrokers.comgdcdyn.interactivebrokers.comglobaltrader.interactivebrokers.caglobaltrader.interactivebrokers.co.inglobaltrader.interactivebrokers.co.jpglobaltrader.interactivebrokers.co.uk+12 more

SHA-256 Fingerprint

D6:C2:02:E2:97:1E:54:FA:E4:F7:18:79:45:16:8B:15:86:82:42:CC...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(max-age=0, no-cache, no-store)

content-encoding

📦 Gzip(gzip)

content-length

34170

content-security-policy

frame-ancestors 'self' *.interactivebrokers.com *.interact...

content-type

text/html; charset=UTF-8

date

Thu, 19 Feb 2026 23:23:20 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (4)

alt3.us.email.fireeyecloud.com

primary.us.email.fireeyecloud.com

alt2.us.email.fireeyecloud.com

alt1.us.email.fireeyecloud.com

Domain Information

interactivebrokers.com

Domain Age

28y 9m

Created

05.05.1997

Expires

06.05.2032

Last Updated

06.05.2022

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

Proxima Nova

74/100

Readability

/30

40/40

20px · LH 1.40

Hierarchy

/20

13/25

1.6x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Proxima Nova

Sans32px

Body Font

Proxima Nova

Sans20px

Contrast Ratio

Reading Comfort

~42 CPL

Needs attention

32px

40px

20px

Minor Second

Scale

✅ Excellent readability: 20px body text is ideal for all devices.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

✅ Good hierarchy: Clear distinction between headlines and body text.

✅ 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

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(16)s.go-mpulse.net(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn Reddit

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Last analyzed: 19 Feb 2026 at 23:23

Historical Analysis & Change Tracking