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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adidas.com

https://adidas.com· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

adidas.com

Mobile

Sponsored

Hosting Provider

adidas AG

IP Address

87.237.217.231

Server Location

🇩🇪 Nuremberg, Germany

ASN

AS12337

Organization

adidas AG

Server

AkamaiNetStorage

Nameservers

udns1.cscdns.net.udns2.cscdns.uk.

Performance

Page Speed

105 KB

4 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

adidas AG

Technology Stack

1 Technologies Detected

CDN

Akamai

SEO Analysis

F29/100

adidas.comadidas.com

adidas

No description available for this page.

Title Length6 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description - important for click-through rates

6 issues found

Upgrade to view details

Sponsored

Security Score

71%Good

Static / Informational

HTTPS

WAF

338d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

15.01.2026

Valid Until

16.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (20)

www.adidas.comadidasapp.api.adidas.com.cnadiportal-cloud.adidas.com.cnap.pss.adidas.comapi-akamai.marvin.adidas-group.comapi-canton-akamai.marvin.adidas-group.comapi-canton-akamai.marvintest.adidas-group.comapi-prod-adidas.adidas.com.cn+12 more

SHA-256 Fingerprint

A9:E2:29:50:6F:FB:85:6B:E0:F5:F7:7C:94:93:39:6F:FF:D5:96:48...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(max-age=0, no-cache, no-store)

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Thu, 12 Feb 2026 15:19:42 GMT

etag

"2f9bac6e699112847b3f49cf69de9640:1711988480.752992"

expires

Thu, 12 Feb 2026 15:19:42 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

adidas-com.mail.protection.outlook.com

Domain Information

adidas.com

Domain Age

30y 4m

Created

25.09.1995

Expires

24.09.2026

Last Updated

20.09.2025

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Typography & Readability

adineue

83/100

Readability

/30

40/40

20px · LH 1.40

Hierarchy

/20

15/25

1.25x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

adineue

Sans25px

Body Font

adineue

Sans20px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

25px

23px

20px

✅ Excellent readability: 20px body text is ideal for all devices.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

⚠️ 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.

✅ Clean layout: Consistent center alignment throughout.

Buy on MyFonts

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Scripts & Styles

1 Resources

Scripts

Styles

Async

Defer

Top Script Sources

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Last analyzed: 12 Feb 2026 at 15:19

Historical Analysis & Change Tracking