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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shazam.com

https://shazam.com· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

shazam.com

Sponsored

Hosting Provider

Google Cloud Platform

cloud.google.com

IP Address

35.244.183.82

Server Location

🇺🇸 Kansas City, United States

ASN

AS396982

Organization

Google Cloud

CDN

Fastly

Nameservers

ns-1194.awsdns-21.org.ns-1571.awsdns-04.co.uk.ns-281.awsdns-35.com.ns-974.awsdns-57.net.

Performance

Page Speed

955 KB

105 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Hybrid

🔀 Hybrid

Frontend

Framework

Next.js

CMS

Framer

Infrastructure

Hosting

Google Cloud Platform

CDN

Fastly

Technology Stack

6 Technologies Detected

Meta Frameworks

Frameworks

Other

CSS Frameworks

Advertising

SEO Analysis

B70/100

shazam.comshazam.com

Shazam - Music Discovery, Charts & Song Lyrics

Identify the music playing around you. Explore the music you love. Discover songs, lyrics, and artists on Shazam.

Title Length46 chars

Recommended: 50-60 chars

Description Length113 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

robots.txt

12 rules

Sitemap reference found

Sponsored

Security Score

66%Fair

Interactive

HTTPS

No WAF

191d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Apple Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

15.10.2025

Valid Until

27.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (13)

www.events.shazam.apple.combeta.shazam.comimages-fastly.shazam.comwww.shazam.comcdn.shazam.comoffer.shazam.apple.comci.assets.shazam.comevents.shazam.apple.com+5 more

SHA-256 Fingerprint

43:16:F4:52:3C:EE:10:ED:63:F0:2C:20:89:15:93:BB:3D:F3:18:D1...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

54072

cache-control

🟡 60s(max-age=60)

content-encoding

📦 Gzip(gzip)

content-length

343963

content-security-policy

frame-ancestors *

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

mx-in-rno.apple.com

mx-in-vib.apple.com

mx-in-hfd.apple.com

mx-in-mdn.apple.com

+1 more

Domain Information

shazam.com

Domain Age

30y 9m

Created

03.05.1995

Expires

26.08.2026

Last Updated

02.08.2023

Registrar

Nom-iq Ltd. dba COM LAUDE

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

Arial

70/100

Readability

/30

22/40

14px · LH --

Hierarchy

/20

25/25

3.57x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Arial

Sans50px

Body Font

Arial

Sans14px

Contrast Ratio

Reading Comfort

~49 CPL

Optimal (45–75)

50px

20px

18px

14px

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

✅ Strong hierarchy: Headlines are 3.6x larger than body text.

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

✅ Consistent design: Single font family with weight variations is a modern best practice.

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

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(20)

Website Identity

Facebook X (Twitter)Instagram

Sponsored

Last analyzed: 16 Feb 2026 at 17:25

Historical Analysis & Change Tracking