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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merca20.com

https://merca20.com· First analyzed 22 Apr 2026· Updated 22 Apr 2026

Export

merca20.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.20.31.150

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

rick.ns.cloudflare.com.zara.ns.cloudflare.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

751 ms10%

Speed Index

976 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

885 KB

89 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.4

cms

Hello Elementorv3.4.5

by Elementor Team

View Theme

Technology Stack

28 Technologies Detected

Plugins

Elementor

Indigitall Web Push Notifications

Elementor

Gdpr Cookie Compliance Ele Custom Skin

Google Analytics For Wordpress

WooCommerce

Yoast SEO

WP Rocket

Advertising

Google Ads Google AdSense Criteo Taboola Outbrain

Libraries

CSS Frameworks

Icon Libraries

Font Awesome Material Icons

Analytics

UI Components

Other

Fonts

Payments

CDN

Customer Support

SEO Analysis

B73/100

Meta Tags15/15

Content3/12

Headings6/8

Technical24/25

E-E-A-T2/7

Images4/7

Links2/5

URL5/5

Social4/5

Freshness4/4

Mobile1/4

Indexability3/3

merca20.commerca20.com

MERCADOTECNIA MARKETING PUBLICIDAD MEDIO Revista Merca2.0

Revista especializada en Mercadotecnia, Publicidad, Medios, Marketing Digital Redes Sociales, Influencers, Promociones e Investigación.

Title Length57 chars

Recommended: 50-60 chars (~357px / 580px)

Description Length135 chars

Recommended: 120-160 chars

Issues (1)

• Very thin content (6 words). Search engines need substantial content for ranking.

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

2,248 URLs

2248 sub-sitemaps

robots.txt

35 rules

Sitemap reference found

Local SEO

Local Search Readiness

23/100

Needs Work

6 11

Sponsored

AI & LLM Readiness

F33/100

Bot Access

15/25

Machine Read.

0/25

Schema Data

8/25

Citation

10/25

AI Bot Access

6/14 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.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:8%

Words:17,215

Token eff.:Excessive

Structured Data

5 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

sameAs entity links

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

89/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

17/20

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

15/15

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

ARIA & Roles

7/15

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

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.

66/100

89 mg

CO₂e / view

885.4 KB

Page Weight

80%

Cleaner Than

New Visitor

102 mg

Returning (cached)

51 mg

Annual (10K/mo)

10.7 kg

Emission Segments

Data Center

4 mg

Network

26 mg

Device

59 mg

Resource Breakdown

JavaScript

427.9 KB

Images

16.2 KB

CSS

249.6 KB

Fonts

86.2 KB

HTML

104.8 KB

Other

728 B

Green Hosting Verified

Cloudflare

GWF Verified

3 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

0%Critical

Critical / Transactional

HTTPS

WAF

53d

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

17.03.2026

Valid Until

15.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

merca20.com*.merca20.com

SHA-256 Fingerprint

06:A3:D3:64:5B:12:7A:70:C8:AA:CE:96:3B:D5:D5:CF:66:B1:31:A9...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

alt-svc

h3=":443"; ma=86400

cf-apo-via

tcache

cf-cache-status

HIT

cf-ray🇩🇪 Frankfurt

9f07b56fb8c9d355-FRA

content-encoding

⚡ Brotli(br)

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

aspmx2.googlemail.com

aspmx.l.google.com

alt2.aspmx.l.google.com

alt1.aspmx.l.google.com

+1 more

Domain Information

merca20.com

Domain Age

24y 1m

Created

05.03.2002

Expires

05.03.2027

Last Updated

03.02.2026

Registrar

Cloudflare, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Complianz

Cookie Consent Banner

Complianz

GDPR Indicators

Cookie consent banner detected

CMP: Complianz

Legitimate interest basis 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.

82/100

Mobile Friendly25 breakpoints

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

Montserrat

WCAG Partial

57/100

Readability

/30

14/30

14px · LH 1.80

Hierarchy

/20

15/20

3x ratio

WCAG

/25

16/25

1.17:1 min contrast

Performance

/25

12/25

3 fonts · 7 req

Heading Font

Montserrat

Sans42px

Body Font

Montserrat

Sans14px

Contrast Ratio

1.17:1

38 issues

Reading Comfort

~40 CPL

Narrow lines

42px

50px

36px

28px

14px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 38 elements below WCAG AA threshold (min 1.2:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 3.0x larger than body text.

✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

GGoogle FontsFlesch 0

Color Palette

5 unique colors

5.74:1 AA Dark

#666666

Other· 58.6%

#ffffff

Background· 23.3%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

GDPR Cookie ConsentFree

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

merca20.com(4)securepubads.g.doubleclick.net(2)fundingchoicesmessages.google.com(2)gstatic.com(1)googletagmanager.com(1)

Website Identity

Revista Merca2.0

Organization

Revista especializada en Mercadotecnia, Publicidad, Medios, Marketing Digital Redes Sociales, Influencers, Promociones e Investigación.

www.merca20.com/

24 years old

Location detected: 🇨🇦 Canadavia ip

Cloudflare, Inc.📧 Google Workspacees

Social Profiles

Facebook X (Twitter)Instagram YouTube

Sponsored

Last analyzed: 22 Apr 2026 at 21:27

Historical Analysis & Change Tracking