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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continental-tires.com

https://continental-tires.com· First analyzed 20 Feb 2026· Updated 20 Feb 2026

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Hosting Provider

Fastly, Inc.

IP Address

151.101.3.10

Server Location

🇨🇦 Montreal, Canada

ASN

AS54113

Organization

Fastly, Inc.

CDN

Fastly

Nameservers

dns1.cscdns.net.dns2.cscdns.net.

Performance

Page Speed

5.5 MB

76 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Adobe Experience Manager

Technology Stack

3 Technologies Detected

CSS Frameworks

Tailwind CSS

Analytics

Google Analytics

Tag Managers

Google Tag Manager

SEO Analysis

A+90/100

continental-tires.comcontinental-tires.com

Continental Tires | Discover Tires Online

In need to replace your tires? Explore Continental tires' extensive selection. Find winter and summer tires, options for cars and trucks, motorcycle and bicy...

Description truncated.

Title Length41 chars

Recommended: 50-60 chars

Description Length205 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

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Crawlability

Sitemap

Type: standard

1,033 URLs

robots.txt

6 rules

Sitemap reference found

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Security Score

56%Poor

Interactive

HTTPS

No WAF

159d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

10.07.2025

Valid Until

29.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (14)

continental-tires.comcontinental-reifen.decontinental-pneumatici.itcontinental-neumaticos.escontinental-tyres.co.ukconti.com.brgeneraltire-specialty.comwww.continental-tires.com+6 more

SHA-256 Fingerprint

CE:29:CB:71:65:32:92:B7:F2:D1:3F:8B:72:C4:A3:44:F3:3B:F9:6A...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

cache-control

🟡 300s(max-age=300)

content-encoding

📦 Gzip(gzip)

content-length

21938

content-type

text/html;charset=utf-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

continental-tires.com

Domain Age

26 years

Created

02.02.2000

Expires

02.02.2027

Last Updated

29.01.2026

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

consentmanager

Cookie Consent Banner

consentmanager

GDPR Indicators

Cookie consent banner detected

CMP: consentmanager

Typography & Readability

Arial

71/100

Readability

/30

32/40

18px · LH 1.33

Hierarchy

/20

18/25

2.78x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Arial

Sans50px

Body Font

Arial

Sans18px

Contrast Ratio

Reading Comfort

~34 CPL

Needs attention

50px

40px

35px

30px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Strong hierarchy: Headlines are 2.8x 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: 18 elements lack adequate spacing.

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Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(6)continental-tires.com(3)cdn.consentmanager.net(2)a.delivery.consentmanager.net(2)customer.cludo.com(2)

Website Identity

Facebook X (Twitter)Instagram LinkedIn

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Last analyzed: 20 Feb 2026 at 11:26

Historical Analysis & Change Tracking