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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atlasobscura.com

https://atlasobscura.com· First analyzed 11 Feb 2026· Updated 11 Feb 2026

Export

atlasobscura.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.67.74.153

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

darl.ns.cloudflare.com.sima.ns.cloudflare.com.

Performance

Page Speed

369 KB

171 requests

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

Frontend

Styling

Tailwind CSS

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Detected API Sources

https://a.ad.gt/api/v1/u/match...

Technology Stack

16 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Hotjar

Plausible Analytics Microsoft Clarity PostHog

Advertising

Google Ads TikTok Pixel

Meta Frameworks

CSS Frameworks

Icon Libraries

Tag Managers

Email Marketing

Other

CDN

Security

SEO Analysis

B78/100

atlasobscura.comatlasobscura.com

Curious and Wondrous Travel Destinations - Atlas Obscura

Definitive guidebook and friendly tour-guide to the world's most wondrous places. Travel tips, articles, strange facts and unique events.

Title Length56 chars

Recommended: 50-60 chars

Description Length137 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

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Sponsored

Security Score

66%Fair

Interactive

HTTPS

WAF

40d

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 0s(max-age=0, private, must-revalidate)

priority

u=0, i

content-type

text/html; charset=utf-8

content-encoding

⚡ Brotli(br)

link

<https://assets.atlasobscura.com/vite/assets/all-d4b44eea.js...

nel

{"report_to":"heroku-nel", "response_headers":["Via"], "max_...

Good Warning Issue

Typography & Readability

ui-sans-serif

56/100

Readability

/30

25/40

36px · LH 1.11

Hierarchy

/20

8/25

0.56x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

ui-sans-serif

Sans20px

Body Font

ui-sans-serif

Sans36px

Contrast Ratio

Reading Comfort

~55 CPL

Optimal (45–75)

20px

28px

16px

13px

36px

✅ Excellent readability: 36px body text is ideal for all devices.

⚠️ Tight line spacing (1.11). Consider 1.4-1.6 for better readability.

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

✅ Good performance: Using 1 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.

Buy on MyFonts

Business & Marketing Stack

7 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

HotjarMid-Market

Microsoft ClarityFree

User behavior and product analytics

Advertising

Pinterest AdsMid-Market

TikTok PixelMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(3)a.ad.gt(1)cdn.hadronid.net(1)google-analytics.com(1)s.cdn.gcprivacy.net(1)

Website Identity

atlasobscura.com

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Last analyzed: 11 Feb 2026 at 09:40

Historical Analysis & Change Tracking