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.

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allposters.com

https://allposters.com· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

allposters.com

Sponsored

Hosting Provider

Vercara, LLC

IP Address

204.74.99.200

Server Location

🇺🇸 Herndon, United States

ASN

AS12008

Organization

Vercara, LLC

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

sdns113.ultradns.biz.sdns113.ultradns.com.sdns113.ultradns.net.sdns113.ultradns.org.

Performance

Page Speed

6.3 MB

172 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

Infrastructure

Hosting

Vercara, LLC

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

16 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

CSS Frameworks

Bootstrap

Tailwind CSS

Chakra UI

Advertising

Pinterest Tag Microsoft Advertising Criteo

Payments

Meta Frameworks

Tag Managers

Reviews

CDN

SEO Analysis

A88/100

allposters.comallposters.com

Allposters | The Largest Online Store for Cool Posters, Affordable ...

Shop Allposters.com for great deals on our huge selection of posters & prints, with fast shipping, easy returns, and custom framing options you'll love!

Title truncated.

Title Length107 chars

Recommended: 50-60 chars

Description Length152 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

274 rules

Sponsored

Security Score

35%Critical

Critical / Transactional

HTTPS

WAF

72d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

31.01.2026

Valid Until

01.05.2026

Subject Alternative Names (1)

www.allposters.com

SHA-256 Fingerprint

A2:0A:88:6C:A8:48:F6:E5:EF:F1:35:CA:E7:DA:91:92:04:AA:7E:91...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

cache-control

⚪ Custom(s-maxage=900)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9cf8ea3b29a2804d-FRA

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Barracuda

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

d299241b.ess.barracudanetworks.com

d299241a.ess.barracudanetworks.com

Domain Information

allposters.com

Domain Age

27y 4m

Created

24.10.1998

Expires

23.10.2026

Last Updated

19.10.2025

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

Apercu

83/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

25/25

2.12x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Apercu

Sans34px

Body Font

Apercu

Sans16px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

34px

42px

28px

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.1x larger than body text.

✅ Good performance: Using 1 font families keeps load times fast.

✅ 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.

Buy on MyFonts

Business & Marketing Stack

12 Tools Detected

Enterprise

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

HotjarMid-Market

Matomo (Piwik)Mid-Market

KissmetricsMid-Market

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Pinterest AdsMid-Market

Microsoft AdsEnterprise

CriteoEnterprise

Ad platforms and retargeting pixels

A/B Testing & Optimization

ConvertMid-Market

Experimentation and conversion optimization

Reviews & Social Proof

TrustpilotMid-Market

Customer reviews and testimonials

Sponsored

Scripts & Styles

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

bat.bing.com(3)googletagmanager.com(3)s.pinimg.com(2)connect.facebook.net(2)scripts.clarity.ms(1)

Website Identity

Facebook Instagram TikTok Pinterest

Sponsored

Last analyzed: 17 Feb 2026 at 23:03

Historical Analysis & Change Tracking