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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jimdo.com

https://jimdo.com· First analyzed 10 Feb 2026· Updated 10 Feb 2026

Export

jimdo.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

162.159.128.70

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns-547.awsdns-04.net.ns-1159.awsdns-16.org.ns-15.awsdns-01.com.ns-1642.awsdns-13.co.uk.

Performance

Page Speed

4 MB

79 requests

0–49

50–89

90–100

Architecture Stack

Hybrid

⚡ SSG

Frontend

Framework

Gatsby

CMS

Jimdo

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

7 Technologies Detected

Analytics

Meta Frameworks

CSS Frameworks

Icon Libraries

Tag Managers

CDN

SEO Analysis

A88/100

jimdo.comjimdo.com

Bring Your Business Online | Websites & More – Jimdo

Try Jimdo, the all-in-one small business solution. Websites, online stores, bookings, logos, SEO, analytics, domains, and hosting.

Title Length52 chars

Recommended: 50-60 chars

Description Length130 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (73/81)

1 issues found

Upgrade to view details

Sponsored

Security Score

86%Very Good

Interactive

HTTPS

WAF

81d

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🔴 No Cache(no-store)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9cbef0d05eddd2d3-FRA

content-encoding

⚡ Brotli(br)

content-security-policy

upgrade-insecure-requests; default-src 'self' 'unsafe-eval' ...

Good Warning Issue

Typography & Readability

Arial

59/100

Readability

/30

20/40

12px · LH 1.50

Hierarchy

/20

18/25

4x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Arial

Sans48px

Body Font

Arial

Sans12px

Contrast Ratio

Reading Comfort

~41 CPL

Needs attention

48px

40px

24px

12px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 4.0x 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.

⚠️ Cramped layout: 23 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

17 Resources

Scripts

Styles

Async

Defer

Top Script Sources

web.cmp.usercentrics.eu(7)local(5)googletagmanager.com(1)accounts.google.com(1)

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Last analyzed: 10 Feb 2026 at 22:11

Historical Analysis & Change Tracking