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

refinery29.com

https://refinery29.com· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

refinery29.com

Mobile

Sponsored

Hosting Provider

Fastly, Inc.

IP Address

151.101.193.55

Server Location

🇨🇦 Montreal, Canada

ASN

AS54113

Organization

Fastly, Inc.

CDN

Fastly

Nameservers

ns-1547.awsdns-01.co.uk.ns-497.awsdns-62.com.ns-724.awsdns-26.net.ns-1334.awsdns-38.org.

Performance

Page Speed

3.1 MB

128 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Fastly, Inc.

CDN

Fastly

Detected API Sources

https://r.skimresources.com/ap...

Technology Stack

11 Technologies Detected

Advertising

Google Ads Twitter Ads TikTok Pixel Snapchat Pixel

Analytics

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

SEO Analysis

B78/100

refinery29.comrefinery29.com

Refinery29

Refinery29 is a creative global platform for ALL young people. We tell stories in our own words that enlighten, inspire, and drive change from the ground up....

Description truncated.

Title Length10 chars

Recommended: 50-60 chars

Description Length439 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

6,790 URLs

robots.txt

22 rules

Sitemap reference found

Sponsored

Security Score

46%Poor

Interactive

HTTPS

No WAF

34d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

18.12.2025

Valid Until

18.03.2026

Subject Alternative Names (2)

*.refinery29.comrefinery29.com

SHA-256 Fingerprint

77:64:7B:22:81:CD:51:8A:45:21:82:E8:31:04:FB:9A:D2:5D:E7:19...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

108

alt-svc

h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=864...

cache-control

🟡 2 Hours(max-age=7200)

content-encoding

⚡ Brotli(br)

content-length

41319

Good Warning Issue

Email Infrastructure

Mimecast

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

us-smtp-inbound-2.mimecast.com

us-smtp-inbound-1.mimecast.com

Domain Information

refinery29.com

Domain Age

21y 2m

Created

22.11.2004

Expires

22.11.2028

Last Updated

23.09.2025

Registrar

Gandi SAS

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Data Protection Officer mentioned

Typography & Readability

Playfair Display + Brown Regular

74/100

Readability

/30

32/40

14px · LH 1.40

Hierarchy

/20

25/25

4.14x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

Playfair Display

Serif58px

Body Font

Brown Regular

Sans14px

Contrast Ratio

Reading Comfort

~40 CPL

Needs attention

58px

24px

14px

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

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 4.1x larger than body text.

⚠️ Inconsistent alignment: Mix of left/center/right creates visual noise.

Buy on MyFonts

Business & Marketing Stack

11 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Pinterest AdsMid-Market

TikTok PixelMid-Market

Snapchat PixelMid-Market

Twitter/X AdsMid-Market

Quora PixelMid-Market

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Pinterest WidgetsFree

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

analytics.tiktok.com(3)location.p7cloud.net(2)s.pinimg.com(2)connect.facebook.net(2)googletagmanager.com(1)

Website Identity

refinery29.com

21 years old

Gandi SAS📧 Mimecast

Social Profiles

Facebook X (Twitter)Instagram LinkedIn TikTok Pinterest

Sponsored

Last analyzed: 12 Feb 2026 at 14:12

Historical Analysis & Change Tracking