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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freemusicarchive.org

https://freemusicarchive.org· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

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Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.26.11.182

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

jo.ns.cloudflare.com.gabe.ns.cloudflare.com.

Performance

Page Speed

18 KB

21 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

CMS

WordPress

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

13 Technologies Detected

Advertising

Criteo Taboola Outbrain

Payments

Frameworks

CSS Frameworks

Fonts

Analytics

Social

Comments

CDN

Plugins

SEO Analysis

D47/100

freemusicarchive.orgfreemusicarchive.org

Royalty free music and 'free to download' music - Free Music Archive

Free Music Archive is your number 1 resource for royalty free music and 'free to download' music.

Title Length68 chars

Recommended: 50-60 chars

Description Length97 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (1867/1869)

7 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

34 rules

Sitemap reference found

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

WAF

40d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

28.12.2025

Valid Until

28.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

freemusicarchive.org*.freemusicarchive.org

SHA-256 Fingerprint

27:5E:DB:30:F4:58:DF:99:D5:50:F8:E2:7F:A6:EB:56:40:39:72:5D...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🔴 No Cache(no-cache, private)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9cece8b419d3e282-FRA

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

alt1.aspmx.l.google.com

alt2.aspmx.l.google.com

aspmx2.googlemail.com

aspmx3.googlemail.com

+1 more

Domain Information

freemusicarchive.org

Domain Age

18y 11m

Created

21.03.2007

Expires

21.03.2027

Last Updated

25.07.2025

Registrar

Hosting Concepts B.V. d/b/a Registrar.eu

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Legitimate interest basis mentioned

Typography & Readability

Roboto Condensed + sans-serif

72/100

Readability

/30

32/40

15px · LH 1.60

Hierarchy

/20

15/25

1.07x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

Roboto Condensed

Sans16px

Body Font

sans-serif

Sans15px

Contrast Ratio

Reading Comfort

~31 CPL

Needs attention

16px

30px

15px

⚠️ Small text: 15px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

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

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

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

⚠️ Cramped layout: 18 elements lack adequate spacing.

GGoogle Fonts

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Privacy & Cookies

CookiebotMid-Market

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

consent.cookiebot.com(3)consentcdn.cookiebot.com(1)powerad.ai(1)googletagmanager.com(1)static.cloudflareinsights.com(1)

Website Identity

freemusicarchive.org

18 years old

Hosting Concepts B.V. d/b/a Registrar.eu📧 Google Workspace

Social Profiles

Facebook X (Twitter)

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Last analyzed: 16 Feb 2026 at 12:05

Historical Analysis & Change Tracking