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

pydata.org

https://pydata.org· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

pydata.org

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.26.0.204

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

henry.ns.cloudflare.com.kristin.ns.cloudflare.com.

Performance

Page Speed

2.4 MB

108 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

DiviCustom

Technology Stack

18 Technologies Detected

Plugins

Easy Social Icons Modern Events Calendar

Divi Footer Editor

Dwd Custom Fullwidth Header Extended Add To Any

Google Analytics For Wordpress

Libraries

Analytics

UI Components

CSS Frameworks

Icon Libraries

Fonts

Marketing

CDN

SEO Analysis

D50/100

pydata.orgpydata.org

PyData |

No description available for this page.

Title Length8 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description - important for click-through rates
• Many images missing alt text (14/16)

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

7 URLs

robots.txt

5 rules

Sitemap reference found

Sponsored

Security Score

71%Good

Static / Informational

HTTPS

WAF

43d

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

Valid From

29.12.2025

Valid Until

29.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

pydata.org*.pydata.org

SHA-256 Fingerprint

B5:52:39:46:FD:3A:70:87:9A:25:8B:E2:BE:2C:F4:01:F8:A5:1E:F7...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 600s(max-age=600, must-revalidate)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9cd90e611c4d199b-FRA

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Sat, 14 Feb 2026 02:15:10 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (5)

aspmx.l.google.com

alt2.aspmx.l.google.com

alt1.aspmx.l.google.com

alt3.aspmx.l.google.com

+1 more

Domain Information

pydata.org

Domain Age

14y 2m

Created

16.12.2011

Expires

16.12.2028

Last Updated

01.05.2025

Registrar

NameCheap, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Typography & Readability

Helvetica

61/100

Readability

/30

40/40

16px · LH 1.70

Hierarchy

/20

25/25

3x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Helvetica

Sans48px

Body Font

Helvetica

Sans16px

Contrast Ratio

Reading Comfort

~118 CPL

Needs attention

48px

30px

18px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.70 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.0x 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.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

pydata.org(9)googletagmanager.com(3)static.addtoany.com(3)js.hsadspixel.net(1)js.hs-banner.com(1)

Website Identity

pydata.org

14 years old

NameCheap, Inc.📧 Google Workspace

Social Profiles

X (Twitter)YouTube Discord Mastodon

Sponsored

Last analyzed: 14 Feb 2026 at 02:15

Historical Analysis & Change Tracking