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

playbill.com

https://playbill.com· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

playbill.com

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.18.25.81

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns15.dnsmadeeasy.com.ns10.dnsmadeeasy.com.ns12.dnsmadeeasy.com.ns13.dnsmadeeasy.com.+2 more

Performance

Page Speed

877 KB

101 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

Frontend

Framework

Alpine.js

Styling

Tailwind CSS

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Detected API Sources

https://analytics.popupsmart.c...

Technology Stack

12 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Lucky Orange

Frameworks

Meta Frameworks

CSS Frameworks

Fonts

Tag Managers

Advertising

CDN

Customer Support

SEO Analysis

B76/100

playbill.complaybill.com

Broadway, Off-Broadway Shows & London | Playbill

Discover Broadway and Off-Broadway shows, London theatre, and the latest theatre news – all in one place on Playbill.

Title Length48 chars

Recommended: 50-60 chars

Description Length117 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

715 URLs

robots.txt

5 rules

Sponsored

Security Score

66%Fair

Interactive

HTTPS

WAF

83d

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

Valid From

10.02.2026

Valid Until

11.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

playbill.com*.playbill.com

SHA-256 Fingerprint

CC:A9:5D:45:8D:6D:0E:E8:D0:DA:3B:16:85:2E:CE:76:A8:E2:27:A6...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

252

cache-control

🔵 Public(public, s-maxage=900)

cf-cache-status

HIT

cf-ray🇩🇪 Frankfurt

9cecd9dccd695d80-FRA

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (4)

mx1.dnsmadeeasy.com

playbill-com.mail.protection.outlook.com

mx2.dnsmadeeasy.com

mx3.dnsmadeeasy.com

Domain Information

playbill.com

Domain Age

30y 9m

Created

15.05.1995

Expires

16.05.2026

Last Updated

06.05.2025

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Roboto Condensed

63/100

Readability

/30

25/40

28px · LH 1.18

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Roboto Condensed

Sans

Body Font

Roboto Condensed

Sans28px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

40px

28px

✅ Excellent readability: 28px body text is ideal for all devices.

⚠️ Tight line spacing (1.18). Consider 1.4-1.6 for better readability.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ Consistent design: Single font family with weight variations is a modern best practice.

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

⚠️ Cramped layout: 52 elements lack adequate spacing.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Lead Generation

PopupsmartSMB

Popups, forms, and lead capture tools

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

28 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)static.chartbeat.com(2)connect.facebook.net(2)securepubads.g.doubleclick.net(2)fundingchoicesmessages.google.com(2)

Website Identity

Facebook Instagram TikTok

Sponsored

Last analyzed: 16 Feb 2026 at 11:54

Historical Analysis & Change Tracking