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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extendthemes.com

https://extendthemes.com· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

extendthemes.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.26.9.68

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

tori.ns.cloudflare.com.oswald.ns.cloudflare.com.

Performance

Page Speed

317 KB

35 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv5.7.2

cms

Mesmerize PROv1.6.143

by Horea Radu

View Theme

Technology Stack

14 Technologies Detected

Plugins

Analytics

Frameworks

Libraries

UI Components

Other

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

CDN

SEO Analysis

B76/100

extendthemes.comextendthemes.com

Extend Themes: drag & drop WordPress themes for jaw-dropping websites

Introducing Mesmerize, Highlight, Materialis, EmpowerWP and One Page Express. It's time to build unique and vibrant websites.

Title Length69 chars

Recommended: 50-60 chars

Description Length125 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (12/16)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

3 rules

Sponsored

Security Score

71%Good

Static / Informational

HTTPS

WAF

56d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

10.01.2026

Valid Until

10.04.2026

Subject Alternative Names (1)

extendthemes.com

SHA-256 Fingerprint

11:C6:50:AD:35:A5:A7:31:A9:C7:14:84:F8:28:81:52:46:54:65:02...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9cd68bf50ee22825-FRA

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Fri, 13 Feb 2026 18:56:37 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

alt1.aspmx.l.google.com

alt2.aspmx.l.google.com

alt3.aspmx.l.google.com

aspmx.l.google.com

+1 more

Domain Information

extendthemes.com

Domain Age

8y 11m

Created

22.02.2017

Expires

22.02.2026

Last Updated

23.02.2025

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Privacy & Compliance

CookieYes

Cookie Consent Banner

CookieYes

GDPR Indicators

Cookie consent banner detected

CMP: CookieYes

Typography & Readability

Helvetica

95/100

Readability

/30

40/40

19px · LH 1.67

Hierarchy

/20

25/25

3.15x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Helvetica

Sans61px

Body Font

Helvetica

Sans19px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

61px

40px

18px

19px

✅ Excellent readability: 19px body text is ideal for all devices.

✅ Optimal line spacing: 1.67 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.1x larger than body text.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ 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

Business & Marketing Stack

4 Tools Detected

Advanced

Customer Support

Help ScoutSMB

Live chat and helpdesk tools

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

GDPR Cookie ConsentFree

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(5)beacon-v2.helpscout.net(3)google-analytics.com(2)cdn.extendthemes.com(2)extendstudio.postaffiliatepro.com(2)

Website Identity

extendthemes.com

8 years old

GoDaddy.com, LLC📧 Google Workspace

Sponsored

Last analyzed: 13 Feb 2026 at 18:56

Historical Analysis & Change Tracking