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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tdg.ch

https://tdg.ch· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

tdg.ch

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.18.0.23

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

CDN

CloudFront

Nameservers

porter.ns.cloudflare.com.becky.ns.cloudflare.com.

Performance

Page Speed

617 KB

134 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

JAMstack

⚙️ SSR

Decoupled

Frontend

Framework

Astro

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Cloudflare

CDN

CloudFront

Progressive Web App

Web ManifestApple Touch Icon

Detected API Sources

https://cdn.tinypass.com/api/t...

Technology Stack

6 Technologies Detected

Analytics

Meta Frameworks

CSS Frameworks

Tag Managers

Advertising

SEO Analysis

B70/100

tdg.chtdg.ch

L’actualité du canton de Genève, de la Suisse et du monde | Tribune...

Retrouvez toute l’actualité suisse et internationale: faits divers, politique, société, culture et lifestyle, sports sur Tribune de Genève

Title truncated.

Title Length98 chars

Recommended: 50-60 chars

Description Length138 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

62 rules

Sitemap reference found

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

387d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

12.02.2026

Valid Until

13.03.2027

OCSP Stapling

Enabled

Subject Alternative Names (20)

files.publishing.tamedia.chprerelease.fuw.chprerelease.24heures.chwww.bernerzeitung.chwww.berneroberlaender.chprerelease.tdg.chwww.tagesanzeiger.chwww.landbote.ch+12 more

SHA-256 Fingerprint

30:61:92:D4:90:D0:BD:2C:2C:5B:62:51:64:43:67:5B:8A:70:E1:6B...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 0s(public, max-age=0, s-maxage=10)

content-encoding

⚡ Brotli(br)

content-type

text/html

date

Thu, 19 Feb 2026 18:11:52 GMT

vary

Accept-Encoding

via

1.1 9a5691d5f57251013f89f471e99f9b7e.cloudfront.net (CloudFr...

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

alt2.aspmx.l.google.com

alt3.aspmx.l.google.com

aspmx.l.google.com

alt1.aspmx.l.google.com

+1 more

Domain Information

tdg.ch

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

Libre Franklin

55/100

Readability

/30

17/40

15px · LH 1.15

Hierarchy

/20

15/25

1.33x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Libre Franklin

Sans20px

Body Font

Libre Franklin

Sans15px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

20px

15px

18px

15px

Minor Second

Scale

⚠️ Small text: 15px may be hard to read on mobile. Consider 16px+.

⚠️ Tight line spacing (1.15). Consider 1.4-1.6 for better readability.

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

✅ Good performance: Using 2 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

6 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

TaboolaMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Reviews & Social Proof

TrustpilotMid-Market

Customer reviews and testimonials

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(9)cdn.cxense.com(2)securepubads.g.doubleclick.net(2)googletagmanager.com(2)sb.scorecardresearch.com(1)

Website Identity

tdg.ch

📧 Google Workspace

Social Profiles

Facebook X (Twitter)Instagram LinkedIn YouTube

Sponsored

Last analyzed: 19 Feb 2026 at 18:12

Historical Analysis & Change Tracking