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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?

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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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chicagomanualofstyle.org

https://chicagomanualofstyle.org· First analyzed 20 Feb 2026· Updated 20 Feb 2026

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Hosting Provider

The University of Chicago

IP Address

205.208.4.177

Server Location

🇺🇸 Chicago, United States

ASN

AS160

Organization

The University of Chicago

Server

Apache

Nameservers

ns32.worldnic.com.ns31.worldnic.com.

Performance

Page Speed

1 MB

54 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

The University of Chicago

Technology Stack

6 Technologies Detected

Analytics

Libraries

CSS Frameworks

Fonts

Web Servers

SEO Analysis

D52/100

chicagomanualofstyle.orgchicagomanualofstyle.org

The Chicago Manual of Style

Homepage to The Chicago Manual of Style Online. University of Chicago Find it. Write it. Cite it. The Chicago Manual of Style Online is the venerable, time-...

Description truncated.

Title Length27 chars

Recommended: 50-60 chars

Description Length446 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

5 issues found

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Crawlability

Sitemap

Type: standard

robots.txt

2 rules

Sitemap reference found

Allows all crawlers

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Security Score

21%Critical

Interactive

HTTPS

No WAF

287d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Internet2

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

04.12.2025

Valid Until

04.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

ucp-press-web10.uchicago.eduamnat.orgbuildingtheamericanrepublic.orgchicagodistributioncenter.comchicagodistributioncenter.orgchicagodistributionservices.comchicagodistributionservices.orgchicagomanual.com+12 more

SHA-256 Fingerprint

D5:A7:F1:72:5B:5E:16:02:71:92:CF:5A:33:BA:E0:F0:92:57:AE:28...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache)

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

3874

content-type

text/html;charset=UTF-8

date

Fri, 20 Feb 2026 12:53:02 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

chicagomanualofstyle.org

Domain Age

25y 1m

Created

25.01.2001

Expires

25.01.2027

Last Updated

07.01.2024

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Public Sans + Arial

51/100

Readability

/30

20/40

10px · LH 1.60

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Public Sans

Body Font

Arial

Sans10px

Contrast Ratio

Reading Comfort

~107 CPL

Needs attention

10px

❌ Critical: 10px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

✅ Good performance: Using 2 font families keeps load times fast.

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

⚠️ Wide lines: ~107 chars/line. Consider max-width for better reading flow.

✅ Clean layout: Consistent left alignment throughout.

GGoogle Fonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Sponsored

Scripts & Styles

28 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(18)cdn.jsdelivr.net(1)googletagmanager.com(1)

Website Identity

Facebook X (Twitter)Instagram Threads Bluesky

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Last analyzed: 20 Feb 2026 at 12:53

Historical Analysis & Change Tracking