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

propublica.org

https://propublica.org· First analyzed 11 Feb 2026· Updated 11 Feb 2026

Export

propublica.org

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

52.207.85.159

Server Location

🇺🇸 Ashburn, United States

ASN

AS14618

Organization

AWS EC2 (us-east-1)

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns-1885.awsdns-43.co.uk.ns-406.awsdns-50.com.ns-607.awsdns-11.net.ns-1190.awsdns-20.org.

Performance

Page Speed

1.3 MB

105 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

React

CMS

WordPressv6.8.3

Infrastructure

Hosting

Amazon Web Services (AWS)

CDN

Cloudflare

Technology Stack

12 Technologies Detected

Plugins

Propublica Archiveless

Frameworks

Analytics

Libraries

CSS Frameworks

Tag Managers

CDN

SEO Analysis

B76/100

propublica.orgpropublica.org

ProPublica — Investigative Journalism and News in the Public Interest

ProPublica is an independent, non-profit newsroom that produces investigative journalism in the public interest.

Title Length69 chars

Recommended: 50-60 chars

Description Length112 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (26/32)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

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Security Score

51%Poor

Interactive

HTTPS

WAF

61d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

13.01.2026

Valid Until

13.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.propublica.org

SHA-256 Fingerprint

C0:A6:33:1E:E1:4A:57:72:36:0B:F7:B2:D3:A4:8C:2E:7C:DF:DF:A5...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

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HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🟡 300s(max-age=300, must-revalidate)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9cc3897b9aaf995d-FRA

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

alt3.aspmx.l.google.com

aspmx.l.google.com

alt1.aspmx.l.google.com

alt4.aspmx.l.google.com

+1 more

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

Georgia + Tiempos Text

57/100

Readability

/30

12/40

13px · LH 1.20

Hierarchy

/20

25/25

2.49x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

Georgia

Serif33px

Body Font

Tiempos Text

Sans13px

Contrast Ratio

Reading Comfort

~44 CPL

Needs attention

33px

19px

13px

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

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

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

⚠️ Cramped layout: 67 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

26 Resources

Scripts

Styles

Async

Defer

Top Script Sources

propublica.org(12)googletagmanager.com(2)assets.propublica.org(2)gstatic.com(1)static.trueanthem.com(1)

Website Identity

propublica.org

📧 Google Workspace

Social Profiles

Facebook X (Twitter)Instagram LinkedIn YouTube Threads Bluesky

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Last analyzed: 11 Feb 2026 at 11:34

Historical Analysis & Change Tracking