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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giant-bicycles.com

https://giant-bicycles.com· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

giant-bicycles.com

Mobile

Sponsored

Hosting Provider

Cyso Hosting B.V.

IP Address

37.46.142.226

Server Location

🇳🇱 Amsterdam, The Netherlands

ASN

AS25151

Organization

Cyso Hosting B.V.

Server

Nginx

Nameservers

anycast-eu.dns.sqr.nl.unicast-eu.dns.sqr.domains.anycast-global.dns.sqr.cloud.

Performance

Page Speed

1 KB

26 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Cyso Hosting B.V.

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

12 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

Google Tag Manager

Segment

Other

D3.js

Other

AOS (Animate On Scroll)

CSS Frameworks

Email Marketing

Web Servers

Libraries

SEO Analysis

A+90/100

giant-bicycles.comgiant-bicycles.com

Giant Bicycles | The world’s leading brand of bicycles and cycling ...

Giant Bicycles' official site provides Giant's latest bikes, accessories, news, promotion, event, pro cycling team and where to find bicycle dealers near you.

Title truncated.

Title Length71 chars

Recommended: 50-60 chars

Description Length158 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

46 URLs

robots.txt

69 rules

Sitemap reference found

Sponsored

Security Score

66%Fair

Interactive

HTTPS

No WAF

363d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

PerfectSSL

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

27.01.2026

Valid Until

16.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.giant-bicycles.comgiant-bicycles.com

SHA-256 Fingerprint

20:FC:AA:28:74:DD:D3:C3:4A:8C:CF:28:50:83:65:0F:1E:F0:50:5B...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

access-control-allow-credentials

true

access-control-allow-headers

Origin, X-Requested-With, Content-Type, Accept

access-control-allow-methods

POST, GET, DELETE

access-control-expose-headers

Request-Context

cache-control

🟡 4 Hours(public, max-age=14400)

content-encoding

📦 Gzip(gzip)

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

giantbicycles-com01c.mail.protection.outlook.com

Domain Information

giant-bicycles.com

Domain Age

27y 2m

Created

08.12.1998

Expires

07.12.2026

Last Updated

18.10.2025

Registrar

Realtime Register B.V.

DNSSEC

Not Enabled

Privacy & Compliance

Civic Cookie Control

Cookie Consent Banner

Civic Cookie Control

GDPR Indicators

Cookie consent banner detected

CMP: Civic Cookie Control

Typography & Readability

Arial

81/100

Readability

/30

40/40

28px · LH 1.43

Hierarchy

/20

20/25

1.82x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Arial

Sans51px

Body Font

Arial

Sans28px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

51px

30px

28px

✅ Excellent readability: 28px body text is ideal for all devices.

✅ Optimal line spacing: 1.43 ratio ensures comfortable reading.

✅ Good hierarchy: Clear distinction between headlines and body text.

✅ Good performance: Using 2 font families keeps load times fast.

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

⚠️ Cramped layout: 13 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

static.giant-bicycles.com(6)

Website Identity

Facebook X (Twitter)Instagram

Sponsored

Last analyzed: 18 Feb 2026 at 06:35

Historical Analysis & Change Tracking