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

radioshack.com

https://radioshack.com· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

radioshack.com

Sponsored

Hosting Provider

Fastly, Inc.

IP Address

151.101.129.124

Server Location

🇨🇦 Montreal, Canada

ASN

AS54113

Organization

Fastly, Inc.

CDN

Fastly

Nameservers

a4-66.akam.net.a28-66.akam.net.a9-66.akam.net.a8-65.akam.net.+2 more

Performance

Page Speed

7.6 MB

250 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Bootstrap

CMS

Magento

Infrastructure

Hosting

Fastly, Inc.

CDN

Fastly

Technology Stack

17 Technologies Detected

Analytics

Libraries

Underscore.js Moment.js

Advertising

Twitter Ads TikTok Pixel Microsoft Advertising

CSS Frameworks

Frameworks

UI Components

Icon Libraries

Fonts

SEO Analysis

D50/100

radioshack.comradioshack.com

RadioShack

Welcome to RadioShack's official website. Search and shop for electronics, gaming devices, powerbanks, audio products and business traveling gear.

Title Length10 chars

Recommended: 50-60 chars

Description Length147 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

7 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

72 rules

Sponsored

Security Score

15%Critical

Critical / Transactional

HTTPS

No WAF

79d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

09.02.2026

Valid Until

10.05.2026

Subject Alternative Names (3)

mcprod.radioshack.comradioshack.comwww.radioshack.com

SHA-256 Fingerprint

3F:3E:EB:85:D4:1B:35:EE:20:7E:34:4C:B0:26:74:22:5B:84:AC:C8...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

alt-svc

h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=864...

cache-control

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

content-security-policy-report-only

font-src fonts.gstatic.com use.typekit.net *.cloudflare.com ...

content-type

text/html; charset=UTF-8

date

Fri, 20 Feb 2026 00:13:12 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

radioshack-com.mail.protection.outlook.com

Domain Information

radioshack.com

Domain Age

29y 6m

Created

09.08.1996

Expires

08.08.2026

Last Updated

27.01.2025

Registrar

Nom-iq Ltd. dba COM LAUDE

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Typography & Readability

Nunito Sans + GothamPro-Medium

48/100

Readability

/30

17/40

14px · LH 1.14

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Nunito Sans

Sans

Body Font

GothamPro-Medium

Sans14px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

26px

18px

14px

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

⚠️ Tight line spacing (1.14). Consider 1.4-1.6 for better readability.

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

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 13 elements lack adequate spacing.

GGoogle Fonts

Business & Marketing Stack

10 Tools Detected

Enterprise

Behavior Analytics

HotjarMid-Market

Microsoft ClarityFree

Google AnalyticsFree

Google Tag ManagerFree

ContentsquareEnterprise

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

TikTok PixelMid-Market

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

28 Resources

Scripts

Styles

Async

Defer

Top Script Sources

analytics.tiktok.com(5)radioshack.com(4)connect.facebook.net(3)googletagmanager.com(2)smct.co(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn TikTok Pinterest

Sponsored

Last analyzed: 20 Feb 2026 at 00:13

Historical Analysis & Change Tracking