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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jumbo.com

https://jumbo.com· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

jumbo.com

Sponsored

Hosting Provider

Akamai Technologies

IP Address

84.53.165.46

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS16625

Server

Apache

CDN

Akamai

WAF

Akamai

Nameservers

a11-67.akam.net.a7-66.akam.net.a1-133.akam.net.a16-64.akam.net.+2 more

Performance

Page Speed

3.2 MB

250 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

JAMstack

⚙️ SSR

Decoupled

Frontend

Framework

Nuxt.js

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Akamai Technologies

CDN

Akamai

Progressive Web App

Web ManifestApple Touch IconTheme Color

Detected API Sources

https://www.jumbo.com/api/jodp...

Technology Stack

8 Technologies Detected

Analytics

Meta Frameworks

Other

CSS Frameworks

Tag Managers

Web Servers

Customer Support

SEO Analysis

B70/100

jumbo.comjumbo.com

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Title Length57 chars

Recommended: 50-60 chars

Description Length131 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

4 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

19 rules

Sponsored

Security Score

74%Good

Interactive

HTTPS

WAF

197d

Certificate Details

Type

Extended Validation (EV)

Certificate Authority

DigiCert Inc

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

Valid From

04.09.2025

Valid Until

04.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (7)

jumbo.comwww.jumbo.comacc-www.jumbo.comhallo.jumbo.comwww.jumbosupermarkten.nljumbosupermarkten.nlwww.hallo.jumbo.com

SHA-256 Fingerprint

DB:F2:C0:95:E0:F6:DE:2C:D9:8F:17:80:CA:80:41:07:C0:C5:F7:AD...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

cache-control

🔴 No Cache(private, max-age=0, proxy-revalidate, no-store, no-cache, mu...)

content-encoding

⚡ Brotli(br)

content-type

text/html;charset=utf-8

cross-origin-opener-policy

same-origin

date

Thu, 19 Feb 2026 21:36:26 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

jumbo-com.mail.protection.outlook.com

Domain Information

jumbo.com

Domain Age

30y 10m

Created

15.04.1995

Expires

16.04.2026

Last Updated

18.03.2025

Registrar

Tucows Domains Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Typography & Readability

Jumbo The Sans

61/100

Readability

/30

32/40

16px · LH 1.38

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Jumbo The Sans

Sans

Body Font

Jumbo The Sans

Sans16px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

30px

24px

16px

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

✅ 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.

⚠️ Cramped layout: 50 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Microsoft ClarityFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

9 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(4)jumbo.com(1)googletagmanager.com(1)s2.go-mpulse.net(1)cdn.cookielaw.org(1)

Website Identity

Facebook X (Twitter)Instagram YouTube Pinterest

Sponsored

Last analyzed: 19 Feb 2026 at 21:36

Historical Analysis & Change Tracking