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.

Back to Search

arsenal.com

https://arsenal.com· First analyzed 15 Feb 2026· Updated 15 Feb 2026

Export

arsenal.com

Mobile

Sponsored

Hosting Provider

Akamai Technologies

IP Address

95.101.111.173

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS20940

Nameservers

a11-65.akam.net.a28-66.akam.net.a1-4.akam.net.a16-67.akam.net.+2 more

Performance

Page Speed

1.3 MB

82 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

7 Technologies Detected

Analytics

Libraries

UI Components

CSS Frameworks

Tag Managers

Customer Support

SEO Analysis

A82/100

arsenal.comarsenal.com

Arsenal FC Official Website | Home | Arsenal.com

Arsenal Football Club Official Website: get the latest Arsenal FC news, highlights, fixtures and results. Become a free digital member for exclusive content.

Title Length48 chars

Recommended: 50-60 chars

Description Length157 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

5 URLs

robots.txt

43 rules

Sitemap reference found

Sponsored

Security Score

81%Very Good

Static / Informational

HTTPS

No WAF

61d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

17.01.2026

Valid Until

17.04.2026

Subject Alternative Names (1)

arsenal.com

SHA-256 Fingerprint

E2:40:5A:F6:84:1A:F9:99:4B:F2:35:14:AF:2E:D3:F8:BE:1E:AC:41...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 69s(public, max-age=69)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-language

content-length

268214

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Mimecast

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

eu-smtp-inbound-2.mimecast.com

eu-smtp-inbound-1.mimecast.com

Domain Information

arsenal.com

Domain Age

33y 6m

Created

05.08.1992

Expires

04.08.2027

Last Updated

31.08.2025

Registrar

SafeNames Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Typography & Readability

Northbank N7 + sans-serif

55/100

Readability

/30

17/40

14px · LH 1.15

Hierarchy

/20

18/25

5.71x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

Northbank N7

Sans80px

Body Font

sans-serif

Sans14px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

80px

28px

36px

14px

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

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

✅ Strong hierarchy: Headlines are 5.7x larger than body text.

✅ 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.

⚠️ Cramped layout: 90 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

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(12)googletagmanager.com(4)cdn-assets.rapidspike.com(1)cdn-ukwest.onetrust.com(1)pcb.incrowdsports.com(1)

Website Identity

Facebook X (Twitter)Instagram TikTok

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Last analyzed: 15 Feb 2026 at 10:40

Historical Analysis & Change Tracking