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

uschamber.com

https://uschamber.com· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

uschamber.com

Mobile

Sponsored

Hosting Provider

Fastly, Inc.

IP Address

151.101.130.133

Server Location

🇨🇦 Montreal, Canada

ASN

AS54113

Organization

Fastly, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

pdns72.ultradns.biz.pdns72.ultradns.com.pdns72.ultradns.net.pdns72.ultradns.org.+2 more

Performance

Page Speed

447 KB

38 requests

Image Optimization

Lazy LoadResponsiveimgix

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

CMS

Craft CMS

Infrastructure

Hosting

Fastly, Inc.

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

5 Technologies Detected

Analytics

CSS Frameworks

Tag Managers

CDN

SEO Analysis

B76/100

uschamber.comuschamber.com

U.S. Chamber of Commerce | U.S. Chamber of Commerce

The U.S. Chamber of Commerce is the world’s largest business organization. We advocate, connect, inform, and fight for business growth and America’s success.

Title Length51 chars

Recommended: 50-60 chars

Description Length157 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (40/42)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

21 URLs

robots.txt

15 rules

Sitemap reference found

Sponsored

Security Score

51%Poor

Interactive

HTTPS

WAF

50d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

04.01.2026

Valid Until

04.04.2026

Subject Alternative Names (2)

uschamber.comwww.uschamber.com

SHA-256 Fingerprint

E7:35:ED:39:29:46:50:66:07:CD:2B:32:B2:1D:40:7F:F4:95:96:1B...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

access-control-allow-headers

access-control-allow-methods

access-control-allow-origin

access-control-expose-headers

age

1274

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (4)

mx0a-00109201.pphosted.com

mxb-00109201.gslb.pphosted.com

mx0b-00109201.pphosted.com

mxa-00109201.gslb.pphosted.com

Domain Information

uschamber.com

Domain Age

29y 10m

Created

27.03.1996

Expires

28.03.2026

Last Updated

24.03.2025

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Typography & Readability

GT America

78/100

Readability

/30

40/40

18px · LH 1.40

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

GT America

Sans

Body Font

GT America

Sans18px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

25px

18px

Minor Second

Scale

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

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

✅ 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.

⚠️ Cramped layout: 34 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

9 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(2)uschamber.com(1)cdn.parsely.com(1)cms.uschamber.com(1)cookie-cdn.cookiepro.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn

Sponsored

Last analyzed: 12 Feb 2026 at 23:35

Historical Analysis & Change Tracking