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

illinois.gov

https://illinois.gov· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

illinois.gov

Mobile

Sponsored

Hosting Provider

Illinois Century Network

IP Address

216.124.54.81

Server Location

🇺🇸 Lombard, United States

ASN

AS6325

Organization

Illinois Century Network

Server

Apache

Nameservers

ns2.state.il.us.ns1.state.il.us.

Performance

Page Speed

29 KB

9 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Adobe Experience Manager

Technology Stack

5 Technologies Detected

Libraries

CSS Frameworks

Icon Libraries

Web Servers

Customer Support

SEO Analysis

C64/100

illinois.govillinois.gov

Illinois

Find places to go, things to see. Search through all the different services offered by the various Illinois agencies.

Title Length8 chars

Recommended: 50-60 chars

Description Length117 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (10/19)

4 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

2 rules

Allows all crawlers

Sponsored

Security Score

56%Poor

Interactive

HTTPS

No WAF

52d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

06.01.2026

Valid Until

06.04.2026

Subject Alternative Names (20)

abe.illinois.govadministrativehearings.illinois.govbudget.illinois.govcapitalmarkets.illinois.govccms.dhs.illinois.govcdhc.illinois.govcei.illinois.govciras2.dhs.illinois.gov+12 more

SHA-256 Fingerprint

50:66:70:86:4D:6D:7B:B4:20:40:F1:FF:80:08:FC:66:C5:0C:DB:FC...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

alt-svc

h3=":443"; ma=93600

cache-control

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

content-encoding

📦 Gzip(gzip)

content-length

10317

content-type

text/html;charset=utf-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (4)

smtpin06.illinois.gov

smtpin01.illinois.gov

smtpin02.illinois.gov

smtpin07.illinois.gov

Domain Information

illinois.gov

Domain Age

23y 2m

Created

06.12.2002

Expires

16.09.2026

Last Updated

21.09.2025

Registrar

get.gov

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

-apple-system

88/100

Readability

/30

40/40

18px · LH 1.50

Hierarchy

/20

18/25

3.56x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

-apple-system

Sans64px

Body Font

-apple-system

Sans18px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

64px

40px

32px

18px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.6x larger than body text.

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

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

⚠️ Cramped layout: 26 elements lack adequate spacing.

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(7)assets.adobedtm.com(3)youtube.com(2)siteimproveanalytics.com(1)cdn.weglot.us(1)

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Last analyzed: 12 Feb 2026 at 18:05

Historical Analysis & Change Tracking