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

denvergov.org

https://denvergov.org· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

denvergov.org

Sponsored

Hosting Provider

City and County of Denver

IP Address

169.133.10.100

Server Location

🇺🇸 Denver, United States

ASN

AS18815

Organization

City and County of Denver

CDN

Akamai

WAF

Akamai

Nameservers

ns-257.awsdns-32.com.ns-713.awsdns-25.net.ns-1533.awsdns-63.org.ns-1950.awsdns-51.co.uk.

Performance

Page Speed

3.3 MB

68 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

City and County of Denver

CDN

Akamai

Progressive Web App

Web ManifestApple Touch IconTheme Color

Detected API Sources

https://maps.googleapis.com/ma...

Technology Stack

11 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Matomo

Fonts

Adobe Fonts (Typekit)Adobe Fonts

Libraries

Other

CSS Frameworks

Icon Libraries

Customer Support

SEO Analysis

D58/100

denvergov.orgdenvergov.org

Home - City and County of Denver

The official website of the City and County of Denver. Report issues, chat with Sunny and get help with city services.

Title Length32 chars

Recommended: 50-60 chars

Description Length118 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (4/6)

5 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

6834 rules

Sponsored

Security Score

75%Good

Critical / Transactional

HTTPS

WAF

267d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1+H3

Valid From

13.11.2025

Valid Until

13.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

www.denvergov.orgapi.denvergov.orgauthor.denvergov.orgdenvergov.orgdev.denvergov.orgdevauthor.denvergov.orgldap.denvergov.orgmysites.denvergov.org+12 more

SHA-256 Fingerprint

A8:0E:40:AA:71:86:54:70:92:93:2D:BB:62:85:42:9C:1F:6A:79:E6...

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=93600

ccdeac

valid

cache-control

🟡 300s(max-age=300)

cache-tag

pg-a0f271b596a847d687480b5abb054b8f,te-ef9e7aac8a75469da4f81...

connection

keep-alive

content-language

en-US

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mxb-00322801.gslb.pphosted.com

mxa-00322801.gslb.pphosted.com

Domain Information

denvergov.org

Domain Age

27y 3m

Created

09.11.1998

Expires

08.11.2026

Last Updated

10.06.2022

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

proxima-nova + sans-serif

68/100

Readability

/30

40/40

18px · LH 1.50

Hierarchy

/20

25/25

2.11x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

proxima-nova

Sans38px

Body Font

sans-serif

Sans18px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

38px

32px

26px

18px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.1x larger than 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.

⚠️ Risky: Text appears on background images without overlay protection.

AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

Matomo (Piwik)Mid-Market

Google Tag ManagerFree

User behavior and product analytics

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

27 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)ajax.aspnetcdn.com(3)googletagmanager.com(2)youtube.com(2)maps.googleapis.com(2)

Website Identity

Facebook X (Twitter)Instagram YouTube

Sponsored

Last analyzed: 19 Feb 2026 at 19:19

Historical Analysis & Change Tracking