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.

Back to Search

data.world

https://data.world· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

data.world

Sponsored

Hosting Provider

Fastly, Inc.

IP Address

151.101.66.133

Server Location

🇨🇦 Montreal, Canada

ASN

AS54113

Organization

Fastly, Inc.

CDN

Fastly

Nameservers

ns-60.awsdns-07.com.ns-798.awsdns-35.net.ns-1187.awsdns-20.org.ns-2019.awsdns-60.co.uk.

Performance

Page Speed

1.7 MB

46 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

Alpine.js

Styling

Tailwind CSS

CMS

HubSpot CMS

Infrastructure

Hosting

Fastly, Inc.

CDN

Fastly

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

8 Technologies Detected

Analytics

Frameworks

CSS Frameworks

Tag Managers

Marketing

Advertising

SEO Analysis

A+90/100

data.worlddata.world

The Data Catalog Platform | data.world

Discover data and metadata in seconds and develop data products and analytics that drive your business.

Title Length38 chars

Recommended: 50-60 chars

Description Length103 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

2 URLs

robots.txt

24 rules

Sponsored

Security Score

36%Critical

Interactive

HTTPS

No WAF

65d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

25.01.2026

Valid Until

25.04.2026

Subject Alternative Names (1)

data.world

SHA-256 Fingerprint

B8:23:48:53:A6:1B:50:8A:FC:3C:BF:9F:15:6E:22:36:EA:56:66:CA...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

content-encoding

📦 Gzip(gzip)

content-length

92824

content-type

text/html

date

Wed, 18 Feb 2026 02:22:36 GMT

Good Warning Issue

Email Infrastructure

Mimecast

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

us-smtp-inbound-2.mimecast.com

us-smtp-inbound-1.mimecast.com

Domain Information

data.world

Domain Age

11y 1m

Created

11.01.2015

Expires

11.01.2027

Last Updated

12.12.2025

Registrar

Gandi SAS

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Typography & Readability

Inter

80/100

Readability

/30

32/40

14px · LH 1.43

Hierarchy

/20

25/25

4.86x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Inter

Sans68px

Body Font

Inter

Sans14px

Contrast Ratio

Reading Comfort

~36 CPL

Needs attention

68px

58px

34px

14px

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

✅ Optimal line spacing: 1.43 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 4.9x larger than body text.

✅ 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

9 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

OsanoMid-Market

CookiebotMid-Market

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

14 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)fast.wistia.com(2)js.hs-banner.com(1)r2d2-inbound-js-store-production.s3.us-east-1.amazonaws.com(1)cmp.osano.com(1)

Website Identity

data.world

11 years old

Gandi SAS📧 Mimecast

Sponsored

Last analyzed: 18 Feb 2026 at 02:22

Historical Analysis & Change Tracking