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

digikey.com

https://digikey.com· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

digikey.com

Mobile

Sponsored

Hosting Provider

Inteliquent

IP Address

204.221.76.76

Server Location

🇺🇸 Thief River Falls, United States

ASN

AS14738

Organization

Inteliquent

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

cbru.br.ns.els-gms.att.net.ns2.p10.dynect.net.ns4.p10.dynect.net.ns3.p10.dynect.net.+2 more

Performance

Page Speed

2 MB

17 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Inteliquent

CDN

Cloudflare

Technology Stack

2 Technologies Detected

Fonts

Google Fonts

CDN

Cloudflare

SEO Analysis

F35/100

digikey.comdigikey.com

Access to this page has been denied

px-captcha

Title Length35 chars

Recommended: 50-60 chars

Description Length10 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

6 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

29 rules

Sitemap reference found

Sponsored

Security Score

41%Poor

Interactive

HTTPS

WAF

76d

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/2+H3

Valid From

30.01.2026

Valid Until

30.04.2026

Subject Alternative Names (2)

*.digikey.comdigikey.com

SHA-256 Fingerprint

53:FA:B1:A1:8A:E5:E7:F9:B9:39:29:85:D5:18:BA:70:AC:E0:DB:68...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

date

Fri, 13 Feb 2026 11:43:30 GMT

content-type

text/html

content-length

5885

strict-transport-security

max-age=31536000; includeSubDomains

set-cookie

_pxhd

server

cloudflare

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (3)

mail3.digikey.com

mail1.digikey.com

mail2.digikey.com

Domain Information

digikey.com

Domain Age

30y 10m

Created

18.04.1995

Expires

19.04.2026

Last Updated

15.04.2025

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Typography & Readability

serif

71/100

Readability

/30

30/40

16px · LH --

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

serif

Body Font

serif

Serif16px

Contrast Ratio

Reading Comfort

Single Family

center aligned

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

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

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

4 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(2)client.px-cloud.net(1)

Sponsored

Last analyzed: 13 Feb 2026 at 11:44

Historical Analysis & Change Tracking