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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metaldevastationradio.com

https://metaldevastationradio.com· First analyzed 26 Apr 2026· Updated 26 Apr 2026

Export

Mobile

Sponsored

Hosting Provider

Hetzner

hetzner.com

IP Address

5.161.63.92

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Ashburn, United States

ASN

AS213230

Organization

Hetzner Online GmbH

Server

Apache

Nameservers

ns4.linode.com.ns1.linode.com.ns3.linode.com.ns5.linode.com.+1 more

Performance

Core Web Vitals

Weight

First Contentful Paint

1.1 s10%

Speed Index

1.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

9.3 MB

64 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Shopify

ecommerce

Shopify Theme

Detected Apps

Instagram Shopping

Technology Stack

8 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Advertising

Google Ads Google AdSense

CSS Frameworks

Fonts

Social

Web Servers

SEO Analysis

C66/100

Meta Tags8/15

Content11/12

Headings8/8

Technical15/25

E-E-A-T3/7

Images4/7

Links2/5

URL5/5

Social3/5

Freshness0/4

Mobile4/4

Indexability3/3

metaldevastationradio.commetaldevastationradio.com

Metal Devastation Radio: The Loudest Heavy Metal Station Online | M...

Stay up to date with the latest metal news, album reviews, band interviews, and underground scene updates on the Metal Devastation Radio Blog. Discover the b...

Title truncated. Description truncated.

Title Length89 chars

Recommended: 50-60 chars (~536px / 580px)

Description Length182 chars

Recommended: 120-160 chars

Issues (1)

• Title is too long (89 chars, ~536px). Will be truncated in search results.

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

3 URLs

3 sub-sitemaps

robots.txt

6 rules

Local SEO

Local Search Readiness

8/100

Poor

3 12 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F33/100

Bot Access

20/25

Machine Read.

1/25

Schema Data

0/25

Citation

12/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

nav

Text ratio:4%

Words:5,617

Token eff.:Excessive

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary35w

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

AI readiness recommendation preview...

Upgrade to view recommendations

Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

60/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

8/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

7/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

1/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

3 recommendations

•Accessibility recommendation preview...

Upgrade to view recommendations

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

24/100

957 mg

CO₂e / view

9.3 MB

Page Weight

Cleaner Than

New Visitor

1.09 g

Returning (cached)

547 mg

Annual (10K/mo)

114.8 kg

Emission Segments

Data Center

47 mg

Network

281 mg

Device

629 mg

Resource Breakdown

JavaScript

363.0 KB

Images

5.6 MB

CSS

3.2 MB

Fonts

2.3 KB

HTML

39.7 KB

Other

23.7 KB

Green Hosting Verified

Hetzner

Provider Match

7 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

56%Poor

Interactive

HTTPS

No WAF

22d

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/1.1

Valid From

17.02.2026

Valid Until

18.05.2026

Subject Alternative Names (2)

metaldevastationradio.comwww.metaldevastationradio.com

SHA-256 Fingerprint

6D:CB:A8:B7:6D:4D:22:CB:45:8F:C4:FB:29:BA:23:42:D9:60:36:0D...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate)

connection

content-encoding

📦 Gzip(gzip)

content-length

40402

content-type

text/html; charset=utf-8

date

Sun, 26 Apr 2026 10:45:09 GMT

Good Warning Issue

Email Infrastructure

Mailgun

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mxb.mailgun.org

mxa.mailgun.org

Domain Information

metaldevastationradio.com

Domain Age

12y 7m

Created

22.09.2013

Expires

22.09.2026

Last Updated

07.09.2025

Registrar

Tucows Domains Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

65/100

Mobile Friendly1 breakpoint

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width, initial-scale=1.0

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Helvetica Neue

WCAG Partial

69/100

Readability

/30

20/30

14px · LH --

Hierarchy

/20

11/20

1.43x ratio · ✓ H1→H6

WCAG

/25

17/25

1.16:1 min contrast

Performance

/25

21/25

System fonts

Heading Font

Helvetica Neue

Sans20px

Body Font

Helvetica Neue

Sans14px

Contrast Ratio

1.16:1

7 issues

Reading Comfort

~50 CPL

Optimal (45–75)

20px

14px

16px

14px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line length: ~50 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 47/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 7 elements below WCAG AA threshold (min 1.2:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

GGoogle FontsFlesch 47

Color Palette

6 unique colors

Dark

#111111

Background· 60.8%

#000101

Primary· 16%

#6d4037

Secondary· 7.9%

#5d2016

Accent· 6.7%

#bbafa7

Secondary· 5%

Business & Marketing Stack

3 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Social Media

ShareThisFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)pagead2.googlesyndication.com(3)metaldevastationradio.com(2)c13.radioboss.fm(2)buttons-config.sharethis.com(1)

Website Identity

metaldevastationradio.com

zach@metaldevastationradio.com

12 years old

Location detected: 🇺🇸 United Statesvia ip

Tucows Domains Inc.📧 Mailgunen

Social Profiles

Facebook X (Twitter)Instagram LinkedIn Discord

Sponsored

Last analyzed: 26 Apr 2026 at 10:45

Historical Analysis & Change Tracking