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

pewresearch.org

https://pewresearch.org· First analyzed 10 Feb 2026· Updated 10 Feb 2026

Export

pewresearch.org

Mobile

Sponsored

Hosting Provider

Automattic, Inc

IP Address

192.0.66.2

Server Location

🇺🇸 San Francisco, United States

ASN

AS2635

Server

Nginx

CDN

Nameservers

ns-795.awsdns-35.net.ns-1318.awsdns-36.org.ns-1841.awsdns-38.co.uk.ns-281.awsdns-35.com.

Performance

Page Speed

2.5 MB

111 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

React

CMS

WordPressv6.9.1

Infrastructure

Hosting

Automattic, Inc

CDN

Technology Stack

26 Technologies Detected

Plugins

Prc Block Library Facetwp Years Prc Icon Library Prc Privacy Consent Google Site Kit Wp Consent Api

Analytics

Facebook Pixel Crazy Egg Sentry

Advertising

Google Ads Google AdSense LinkedIn Ads Pinterest Tag

Frameworks

React

Angular

Fonts

Adobe Fonts (Typekit)Adobe Fonts

Libraries

CSS Frameworks

Tag Managers

Web Servers

CDN

SEO Analysis

B70/100

pewresearch.orgpewresearch.org

Pew Research Center | Numbers, Facts and Trends Shaping Your World

Pew Research Center is a nonpartisan, nonadvocacy fact tank that informs the public about the issues, attitudes and trends shaping the world.

Title Length66 chars

Recommended: 50-60 chars

Description Length141 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (32/49)

3 issues found

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Sponsored

Security Score

36%Critical

Interactive

HTTPS

No WAF

53d

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🟣 Private(private)

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Tue, 10 Feb 2026 22:27:05 GMT

host-header

a9130478a60e5f9135f765b23f26593b

Good Warning Issue

Typography & Readability

Georgia + Verdana

68/100

Readability

/30

20/40

12px · LH 1.60

Hierarchy

/20

25/25

2.33x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Georgia

Serif28px

Body Font

Verdana

Sans12px

Contrast Ratio

Reading Comfort

~41 CPL

Needs attention

28px

20px

18px

12px

❌ Critical: 12px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.3x larger than body text.

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

⚠️ Cramped layout: 104 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Crazy EggSMB

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Google AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

pewresearch.org(11)googletagmanager.com(4)pagead2.googlesyndication.com(2)script.crazyegg.com(1)connect.facebook.net(1)

Website Identity

pewresearch.org

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Last analyzed: 10 Feb 2026 at 22:27

Historical Analysis & Change Tracking