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

washington.org

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

Export

washington.org

Sponsored

Hosting Provider

Pantheon

pantheon.io

IP Address

23.185.0.4

Server Location

🇺🇸 San Francisco, United States

ASN

AS54113

Organization

Pantheon

Server

Nginx

CDN

Fastly

Nameservers

norm.ns.cloudflare.com.fay.ns.cloudflare.com.

Performance

Page Speed

4.8 MB

248 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Tailwind CSS

CMS

Drupal

Infrastructure

Hosting

Pantheon

CDN

Fastly

Technology Stack

14 Technologies Detected

Libraries

Other

CSS Frameworks

Icon Libraries

Font Awesome Material Icons

Analytics

UI Components

Tag Managers

Advertising

Web Servers

SEO Analysis

B70/100

washington.orgwashington.org

Official Tourism Site of Washington DC | Washington DC

Monuments and memorials, eclectic neighborhoods, true local flavor – Washington, DC is a place unlike any other. It’s your home away from home with free muse...

Description truncated.

Title Length54 chars

Recommended: 50-60 chars

Description Length302 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

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Crawlability

Sitemap

Type: index

3 URLs

robots.txt

52 rules

Sponsored

Security Score

56%Poor

Interactive

HTTPS

No WAF

83d

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

Valid From

12.02.2026

Valid Until

13.05.2026

Subject Alternative Names (2)

washington.orgwww.washington.org

SHA-256 Fingerprint

85:25:44:F6:5B:48:87:B6:32:24:52:C4:B3:DB:03:8A:B5:60:55:9B...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

cache-control

🟡 900s(max-age=900, public)

content-encoding

📦 Gzip(gzip)

content-language

content-length

44421

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

washington.org.2.0001.arsmtp.com

washington.org.1.0001.arsmtp.com

Domain Information

washington.org

Domain Age

30y 10m

Created

23.04.1995

Expires

24.04.2034

Last Updated

29.04.2024

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Typography & Readability

Brandon Grotesque W01 Bold + Brandon Grotesque W01 Regular

51/100

Readability

/30

32/40

16px · LH 1.35

Hierarchy

/20

18/25

6.19x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Brandon Grotesque W01 Bold

Sans99px

Body Font

Brandon Grotesque W01 Regular

Sans16px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

99px

57px

36px

27px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Strong hierarchy: Headlines are 6.2x larger than body text.

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

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

⚠️ Cramped layout: 239 elements lack adequate spacing.

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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

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Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(6)googletagmanager.com(4)cdn.cookielaw.org(2)securepubads.g.doubleclick.net(2)static.addtoany.com(2)

Website Identity

Facebook X (Twitter)Instagram YouTube

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Last analyzed: 19 Feb 2026 at 16:46

Historical Analysis & Change Tracking