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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jigsawplanet.com

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

Export

jigsawplanet.com

Sponsored

Hosting Provider

HIVELOCITY, Inc.

IP Address

69.46.22.74

Server Location

🇺🇸 Tampa, United States

ASN

AS29802

Organization

HIVELOCITY, Inc.

Server

Nginx

Nameservers

pdns08.domaincontrol.com.pdns07.domaincontrol.com.

Performance

Page Speed

500 KB

69 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

Technology Stack

16 Technologies Detected

Advertising

Google Ads Criteo Taboola Outbrain

Analytics

Payments

Frameworks

CSS Frameworks

Icon Libraries

Tag Managers

Social

Comments

Web Servers

Plugins

SEO Analysis

D52/100

jigsawplanet.comjigsawplanet.com

Free Online Jigsaw Puzzles

Millions of free jigsaw puzzles created by a large community. Create, play, share jigsaw puzzles and compete with other users.

Title Length26 chars

Recommended: 50-60 chars

Description Length126 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (1897/1948)

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

41 rules

Sitemap reference found

Sponsored

Security Score

15%Critical

Critical / Transactional

HTTPS

No WAF

41d

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

Valid From

30.12.2025

Valid Until

30.03.2026

Subject Alternative Names (3)

im.jigsawplanet.comjigsawplanet.comwww.jigsawplanet.com

SHA-256 Fingerprint

89:CF:8C:2F:A1:D5:42:9E:CB:6C:92:90:60:FE:A5:E5:D0:E2:E7:FE...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Mon, 16 Feb 2026 21:58:45 GMT

server

nginx

strict-transport-security

max-age=31536000; includeSubDomains; preload

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

mx.needtoplay.com

Domain Information

jigsawplanet.com

Domain Age

20y 1m

Created

02.01.2006

Expires

02.01.2034

Last Updated

13.12.2025

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Legitimate interest basis mentioned

Typography & Readability

Geneva + sans-serif

70/100

Readability

/30

32/40

14px · LH 1.71

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Geneva

Sans

Body Font

sans-serif

Sans14px

Contrast Ratio

Reading Comfort

Dual Sans-Serif

left aligned

18px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.71 ratio ensures comfortable reading.

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

⚠️ Cramped layout: 7 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

CookiebotMid-Market

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

consent.cookiebot.com(3)securepubads.g.doubleclick.net(2)local(1)googletagmanager.com(1)

Website Identity

Facebook X (Twitter)

Sponsored

Last analyzed: 16 Feb 2026 at 21:59

Historical Analysis & Change Tracking