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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allaboutjazz.com

https://allaboutjazz.com· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

allaboutjazz.com

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.26.1.189

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

leia.ns.cloudflare.com.rajeev.ns.cloudflare.com.

Performance

Page Speed

235 KB

101 requests

Image Optimization

Lazy LoadWebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Magento

Progressive Web App

PWA ReadyWeb ManifestService Worker

Technology Stack

14 Technologies Detected

CSS Frameworks

Meta Frameworks

Icon Libraries

Font Awesome Material Icons

Analytics

Libraries

Fonts

Tag Managers

Advertising

CDN

SEO Analysis

B78/100

allaboutjazz.comallaboutjazz.com

All About Jazz Music, Musicians, Bands & Albums

All About Jazz covers the world of jazz music, with interviews of top musicians and bands, albums reviews, free music, videos, photos, and news.

Title Length47 chars

Recommended: 50-60 chars

Description Length144 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

15 URLs

robots.txt

9 rules

Sponsored

Security Score

10%Critical

Critical / Transactional

HTTPS

WAF

80d

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

09.02.2026

Valid Until

10.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

allaboutjazz.com*.allaboutjazz.com

SHA-256 Fingerprint

3A:3D:0B:6D:BF:CB:40:5C:C0:8D:5C:28:92:35:36:E3:7B:5C:6C:BA...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

date

Thu, 19 Feb 2026 15:21:47 GMT

content-type

text/html; charset=UTF-8

server

cloudflare

vary

Accept-Encoding

set-cookie

PHPSESSID

expires

Thu, 19 Nov 1981 08:52:00 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

alt4.aspmx.l.google.com

alt2.aspmx.l.google.com

alt1.aspmx.l.google.com

aspmx.l.google.com

+1 more

Domain Information

allaboutjazz.com

Domain Age

28y 6m

Created

15.08.1997

Expires

14.08.2026

Last Updated

10.07.2025

Registrar

Amazon Registrar, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Oswald + Calibri

63/100

Readability

/30

40/40

18px · LH 1.40

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

Oswald

Sans

Body Font

Calibri

Sans18px

Contrast Ratio

Reading Comfort

~77 CPL

Optimal (45–75)

52px

31px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

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

✅ Protected text on images: Using gradient for readability.

✅ Optimal line length: ~77 characters per line is comfortable to read.

⚠️ Cramped layout: 44 elements lack adequate spacing.

GGoogle Fonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

allaboutjazz.com(9)scripts.pubnation.com(2)googletagmanager.com(2)google.com(2)exchange.pubnation.com(1)

Website Identity

Facebook Instagram LinkedIn

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Last analyzed: 19 Feb 2026 at 15:22

Historical Analysis & Change Tracking