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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bluewin.ch

https://bluewin.ch· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

bluewin.ch

Sponsored

Hosting Provider

Swisscom (Schweiz) AG

IP Address

213.3.75.39

Server Location

🇨🇭 Wallisellen, Switzerland

ASN

AS3303

Organization

Swisscom (Schweiz) AG

CDN

Nameservers

ns32.scs-ns.org.ns31.scs-ns.ch.ns33.scs-ns.net.

Performance

Page Speed

2.4 MB

250 requests

Image Optimization

Lazy LoadResponsiveimgix

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Swisscom (Schweiz) AG

CDN

Progressive Web App

Web ManifestApple Touch Icon

Detected API Sources

https://functions.adnami.io/ap...

Technology Stack

5 Technologies Detected

Meta Frameworks

Libraries

CSS Frameworks

Analytics

Advertising

SEO Analysis

A84/100

bluewin.chbluewin.ch

blue News | bluewin E-Mail | News, Politik, Sport, People

News und Sport aus der Schweiz & International, Politik, Wetter, People und Livestreams – Webmail Login für Bluewin E-Mail

Title Length57 chars

Recommended: 50-60 chars

Description Length122 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

robots.txt

56 rules

Sitemap reference found

Sponsored

Security Score

71%Good

Static / Informational

HTTPS

No WAF

198d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

SwissSign AG

Key Algorithm

RSA (3072 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

04.09.2025

Valid Until

04.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (3)

bluewin.chwww.bluewin.chmob.bluewin.ch

SHA-256 Fingerprint

43:D8:D0:27:08:1B:BA:87:97:A6:91:72:45:97:AF:F5:C3:CE:9A:70...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

125

cache-control

🔵 Public(public, s-maxage=240)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-length

59870

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mx02.p.bluenet.ch

mx01.p.bluenet.ch

Domain Information

bluewin.ch

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Typography & Readability

TheSans

55/100

Readability

/30

24/40

14px · LH 2.00

Hierarchy

/20

8/25

1.43x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

TheSans

Sans20px

Body Font

TheSans

Sans14px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

20px

34px

26px

14px

Minor Second

Scale

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

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

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

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

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 154 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

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.confiant-integrations.net(3)script.4dex.io(1)collector.brandmetrics.com(1)macro.adnami.io(1)cdn.brandmetrics.com(1)

Website Identity

Facebook X (Twitter)Instagram YouTube TikTok

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Last analyzed: 17 Feb 2026 at 13:09

Historical Analysis & Change Tracking