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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.

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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

fashionnova.com

https://fashionnova.com· First analyzed 23 Apr 2026· Updated 23 Apr 2026

Export

fashionnova.com

Mobile

Sponsored

Hosting Provider

Shopify

shopify.com

IP Address

23.227.38.32

Site Location

🇺🇸 Los Angeles , United Statesvia schema_nap

Server Location

🇨🇦 Ottawa, Canada

ASN

AS13335

Organization

Shopify, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns39.domaincontrol.com.ns40.domaincontrol.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

864 ms10%

Speed Index

1.1 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.5 MB

209 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

Frontend

Styling

Tailwind CSS

API

Data Source

Headless CMS

Sanity

Infrastructure

Hosting

Shopify

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Detected API Sources

https://cdn.sanity.io/images/0...https://cdn.sanity.io/images/0...

Technology Stack

12 Technologies Detected

Analytics

Payments

CSS Frameworks

Tag Managers

Email Marketing

Advertising

Other

CDN

Customer Support

SEO Analysis

B74/100

Meta Tags9/15

Content6/12

Headings8/8

Technical24/25

E-E-A-T2/7

Images6/7

Links5/5

URL5/5

Social2/5

Freshness0/4

Mobile4/4

Indexability3/3

fashionnova.comfashionnova.com

Fashion Nova | Fashion Online For Women | Affordable Women's Clothi...

Fashion Nova is the top online fashion store for women. Shop sexy club dresses, jeans, shoes, bodysuits, skirts and more. Affordable fashion online!

Title truncated.

Title Length84 chars

Recommended: 50-60 chars (~508px / 580px)

Description Length148 chars

Recommended: 120-160 chars

Issues (1)

• Title is too long (84 chars, ~508px). Will be truncated in search results.

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

2,138 URLs

2138 sub-sitemaps

robots.txt

156 rules

Sitemap reference found

Local SEO

Local Search Readiness

31/100

Needs Work

9 13

Sponsored

AI & LLM Readiness

D46/100

Bot Access

20/25

Machine Read.

14/25

Schema Data

3/25

Citation

9/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

nav

Text ratio:0%

Words:478

Token eff.:Optimal

Depth:1/5

Structured Data

1 JSON-LD

Organization×1.1

sameAs entity links

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

AI readiness recommendation preview...

Upgrade to view recommendations

Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

80/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

12/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

15/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

9/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

2 recommendations

•Accessibility recommendation preview...

Upgrade to view recommendations

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

51/100

255 mg

CO₂e / view

2.5 MB

Page Weight

30%

Cleaner Than

New Visitor

291 mg

Returning (cached)

146 mg

Annual (10K/mo)

30.6 kg

Emission Segments

Data Center

13 mg

Network

75 mg

Device

167 mg

Resource Breakdown

JavaScript

1.0 MB

Images

839.1 KB

CSS

26.4 KB

Fonts

73.5 KB

HTML

161.4 KB

Other

377.9 KB

Green Hosting Verified

Cloudflare

GWF Verified

7 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

51%Poor

Interactive

HTTPS

WAF

86d

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

20.04.2026

Valid Until

19.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.fashionnova.com

SHA-256 Fingerprint

6A:42:77:26:A1:64:B3:FD:D4:B9:AD:31:28:AD:C0:9D:4A:8B:08:D0...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cf-ray🇩🇪 Frankfurt

9f0f269b7cacdcb9-FRA

content-encoding

⚡ Brotli(br)

content-type

text/html

date

Thu, 23 Apr 2026 19:07:22 GMT

document-policy

js-profiling

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

alt1.aspmx.l.google.com

alt3.aspmx.l.google.com

alt2.aspmx.l.google.com

aspmx.l.google.com

+1 more

Domain Information

fashionnova.com

Domain Age

20y 1m

Created

09.03.2006

Expires

09.03.2029

Last Updated

03.04.2023

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Data Protection Officer mentioned

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

76/100

Mobile Friendly1 breakpoint

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width,initial-scale=1

1 recommendation

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

proxima-nova

WCAG Partial

63/100

Readability

/30

13/30

12px · LH 1.33

Hierarchy

/20

18/20

2.33x ratio · ✓ H1→H6

WCAG

/25

17/25

1:1 min contrast

Performance

/25

15/25

1 font · 2 req

Heading Font

proxima-nova

Sans28px

Body Font

proxima-nova

Sans12px

Contrast Ratio

1:1

3 issues

Reading Comfort

Single Font Family

left aligned

28px

16px

12px

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

✅ Easy to read: Flesch score 78/100 — accessible to general audiences.

⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 1.0:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ Strong hierarchy: Headlines are 2.3x larger than body text.

Buy on MyFontsFlesch 78

Color Palette

12 unique colors

3.92:1 AA Large Light

#ffffff

Background· 38.3%

#788474

Other· 6%

#000000

Primary· 0%

#35392b

Secondary· 7.5%

#0b100d

Secondary· 6.9%

#57634c

Secondary· 6.6%

#1a291b

Secondary· 5.6%

#ae786e

Secondary· 4.9%

Business & Marketing Stack

4 Tools Detected

Enterprise

Marketing Automation

KlaviyoE-commerce

Email marketing and automation platforms

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

A/B Testing & Optimization

OptimizelyEnterprise

Experimentation and conversion optimization

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

static.klaviyo.com(5)static-tracking.klaviyo.com(3)undgb.fashionnova.com(2)transcend-cdn.com(2)j.northbeam.io(1)

Website Identity

Fashion Nova

Organization

Fashion Nova is the top online fashion store for women. Shop sexy club dresses, jeans, shoes, bodysuits, skirts and more. Affordable fashion online!

www.fashionnova.com

20 years old

6600 Topanga Canyon Blvd, Los Angeles

91303, Los Angeles , CA

Location detected: 🇺🇸 United States, Los Angeles via schema_nap

GoDaddy.com, LLC📧 Google Workspaceen

Social Profiles

Facebook Instagram TikTok Pinterest

Sponsored

Last analyzed: 23 Apr 2026 at 19:07

Historical Analysis & Change Tracking