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

treas.gov

https://treas.gov· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

treas.gov

Mobile

Sponsored

Hosting Provider

United States Department of the Treasury

IP Address

164.95.95.220

Server Location

🇺🇸 Ashburn, United States

ASN

AS13506

Organization

United States Department of the Treasury

Server

Nginx

CDN

Akamai

WAF

Akamai

Nameservers

tadeo.ns.cloudflare.com.margot.ns.cloudflare.com.

Performance

Page Speed

3.3 MB

39 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Technology Stack

8 Technologies Detected

Analytics

Libraries

CSS Frameworks

Icon Libraries

Fonts

Web Servers

Customer Support

SEO Analysis

B70/100

treas.govtreas.gov

Front page | U.S. Department of the Treasury

No description available for this page.

Title Length44 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description - important for click-through rates

3 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

53 rules

Sponsored

Security Score

61%Fair

Interactive

HTTPS

WAF

81d

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

05.02.2026

Valid Until

06.05.2026

Subject Alternative Names (6)

dev.treasury.govedit.stg.treasury.govedit.treasury.govhome.treasury.govstg.treasury.govuat.treasury.gov

SHA-256 Fingerprint

E0:35:6A:DA:24:7A:9D:E8:24:95:AE:C9:B7:67:83:18:9A:A9:E4:9A...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

access-control-allow-origin

alt-svc

h3=":443"; ma=93600

cache-control

🔴 No Cache(private, no-cache, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-language

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

Domain Information

treas.gov

Domain Age

28y 4m

Created

02.10.1997

Expires

08.09.2026

Last Updated

13.09.2025

Registrar

get.gov

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

Cambria + Source Sans Pro Web

41/100

Readability

/30

5/40

13px · LH 1.10

Hierarchy

/20

18/25

3.12x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

Cambria

Serif40px

Body Font

Source Sans Pro Web

Sans13px

Contrast Ratio

Reading Comfort

~43 CPL

Needs attention

40px

15px

40px

13px

Perfect Fifth

Scale

❌ Critical: 13px body text is too small. Increase to at least 14px.

⚠️ Tight line spacing (1.10). Consider 1.4-1.6 for better readability.

✅ Strong hierarchy: Headlines are 3.1x larger than body text.

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

⚠️ Cramped layout: 16 elements lack adequate spacing.

GGoogle Fonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)local(4)use.fontawesome.com(2)dap.digitalgov.gov(2)google-analytics.com(1)

Website Identity

Facebook X (Twitter)LinkedIn

Sponsored

Last analyzed: 14 Feb 2026 at 10:42

Historical Analysis & Change Tracking