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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farnell.com

https://farnell.com· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

farnell.com

Mobile

Sponsored

Hosting Provider

Lumen Technologies UK Limited

IP Address

193.240.59.150

Server Location

🇬🇧 Manchester, United Kingdom

ASN

AS3549

Organization

Lumen Technologies UK Limited

Nameservers

nsusa.comlaude.net.nsgbr.comlaude.co.uk.nssui.comlaude.ch.

Performance

Page Speed

1.4 MB

137 requests

Image Optimization

WebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Bootstrap

Infrastructure

Hosting

Lumen Technologies UK Limited

Technology Stack

6 Technologies Detected

CSS Frameworks

Analytics

Libraries

UI Components

SEO Analysis

D52/100

farnell.comfarnell.com

Welcome to Farnell Global | Global Electronic Component Distributor

Farnell is one of the world's largest distributors of electronic components. With a stock of over 950,000 electronic components, we provide FAST same day des...

Description truncated.

Title Length67 chars

Recommended: 50-60 chars

Description Length190 chars

Recommended: 120-160 chars

Issues (0)

7 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

15 rules

Sponsored

Security Score

86%Very Good

Static / Informational

HTTPS

No WAF

81d

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/1.1

Valid From

05.05.2025

Valid Until

06.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.farnell.comfarnell.com

SHA-256 Fingerprint

BF:41:32:F1:9B:6F:07:49:22:33:B7:DC:E3:80:B2:F7:8D:0A:C7:19...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-length

18655

content-security-policy

frame-src https://*.farnell.com https://*.element14.com http...

content-type

text/html; charset=UTF-8

date

Sat, 14 Feb 2026 12:24:14 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (6)

smtpemea02.avnet.com

smtp03.avnet.com

smtpemea01.avnet.com

smtp02.avnet.com

+2 more

Domain Information

farnell.com

Domain Age

31y 2m

Created

07.12.1994

Expires

06.12.2026

Last Updated

26.11.2025

Registrar

Nom-iq Ltd. dba COM LAUDE

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

ApercuPro-Bold + -apple-system

86/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

18/25

2.5x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

ApercuPro-Bold

Sans40px

Body Font

-apple-system

Sans16px

Contrast Ratio

Reading Comfort

~40 CPL

Needs attention

40px

32px

20px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

⚠️ Cramped layout: 37 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

17 Resources

Scripts

Styles

Async

Defer

Top Script Sources

assets.adobedtm.com(5)cdn.jsdelivr.net(3).(2)google-analytics.com(1)code.jquery.com(1)

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Last analyzed: 14 Feb 2026 at 12:24

Historical Analysis & Change Tracking