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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mailpoet.com

https://mailpoet.com· First analyzed 25 Apr 2026· Updated 25 Apr 2026

Export

mailpoet.com

Mobile

Sponsored

Hosting Provider

Automattic, Inc

IP Address

192.0.78.128

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 San Francisco, United States

ASN

AS2635

Server

Nginx

Nameservers

ns1.automattic.com.ns3.automattic.com.ns2.automattic.com.ns4.automattic.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.4 s10%

Speed Index

3.1 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

730 KB

59 requests

Image Optimization

Lazy LoadResponsiveJetpack Photon (WordPress)

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

New MailPoetv1.0.0Custom

by MailPoet

Technology Stack

16 Technologies Detected

Plugins

Fonts

Adobe Fonts (Typekit)Adobe Fonts

Analytics

Libraries

UI Components

CSS Frameworks

Icon Libraries

Tag Managers

Web Servers

Security

SEO Analysis

A87/100

Meta Tags14/15

Content10/12

Headings6/8

Technical24/25

E-E-A-T5/7

Images3/7

Links4/5

URL5/5

Social5/5

Freshness4/4

Mobile4/4

Indexability3/3

mailpoet.commailpoet.com

MailPoet, an email marketing plugin for WordPress

An email marketing plugin for WordPress trusted by 600,000+ websites. Send newsletters, post notifications and automate your marketing for WooCommerce.

Title Length49 chars

Recommended: 50-60 chars (~297px / 580px)

Description Length151 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (27/35) — critical for accessibility and SEO

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

4 URLs

4 sub-sitemaps

robots.txt

5 rules

Local SEO

Local Search Readiness

16/100

Poor

4 14

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

C61/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

12/25

Citation

16/25

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.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

nav

Text ratio:5%

Words:1,004

Token eff.:Optimal

Sections/1K:9

Depth:1/5

Structured Data

6 JSON-LD

Article×1.2Person×1.3(min)Organization×1.1WebSiteSearchAction

sameAs entity links

Citation Readiness

Opening Summary90w

Descriptive Headingsavg 5.1w

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (6)

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.

75/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

Semantic Structure

18/20

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

Forms & Inputs

10/15

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.

3 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.

42/100

90 mg

CO₂e / view

729.6 KB

Page Weight

80%

Cleaner Than

New Visitor

103 mg

Returning (cached)

52 mg

Annual (10K/mo)

10.8 kg

Emission Segments

Data Center

20 mg

Network

22 mg

Device

48 mg

Resource Breakdown

JavaScript

146.0 KB

Images

329.2 KB

CSS

229.4 KB

HTML

24.7 KB

Other

300 B

Green Hosting Not Verified

Automattic, Inc

6 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

36%Critical

Interactive

HTTPS

No WAF

75d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

11.04.2026

Valid Until

10.07.2026

Subject Alternative Names (20)

aci.yoh.mybluehost.mecreativeedgepools.commountainwestdermatology.commundodominicanoonline.comnorthernductseal.comnrg.org.aunutrircom.cozinhadominichef.com.brpalmettoplumbinganddraincleaning.com+12 more

SHA-256 Fingerprint

D4:AE:7C:08:D6:F9:61:62:12:A2:A4:7E:3C:63:9F:D4:98:B6:88:68...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

content-type

text/html

date

Sat, 25 Apr 2026 19:52:37 GMT

server

nginx

server-timing

a8c-cdn, dc;desc=sjc, cache;desc=BYPASS;dur=0.0

strict-transport-security

max-age=31536000

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

mx2.ams.automattic.com

mx1.dfw.automattic.com

Domain Information

mailpoet.com

Domain Age

13 years

Created

18.04.2013

Expires

18.04.2028

Last Updated

17.03.2026

Registrar

MarkMonitor Inc.

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.

82/100

Mobile Friendly6 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

proxima-soft

WCAG Partial

74/100

Readability

/30

27/30

16px · LH 1.50

Hierarchy

/20

15/20

2.62x ratio

WCAG

/25

17/25

2.4:1 min contrast

Performance

/25

15/25

1 font · 1 req

Heading Font

proxima-soft

Sans42px

Body Font

proxima-soft

Sans16px

Contrast Ratio

2.4:1

25 issues

Reading Comfort

~36 CPL

Narrow lines

42px

22px

16px

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

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 25 elements below WCAG AA threshold (min 2.4:1).

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

✅ Strong hierarchy: Headlines are 2.6x larger than body text.

⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

AAdobe Fonts Buy on MyFontsFluid Type (rem)Flesch 55

Color Palette

12 unique colors

Light

#ffffff

Background· 26.8%

#f76a27

Primary· 14.8%

#ff965d

Accent· 13%

#fdab7f

Accent· 10.7%

#2a2783

Accent· 9.2%

#ffc2a0

Accent· 7.199999999999999%

#fe8144

Accent· 5.7%

#140986

Accent· 5.1%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

mailpoet.com(13)googletagmanager.com(3)gstatic.com(1)google-analytics.com(1)stats.wp.com(1)

Website Identity

MailPoet

Organization

An email marketing plugin for WordPress trusted by 600,000+ websites. Send newsletters, post notifications and automate your marketing for WooCommerce.

www.mailpoet.com

13 years old

Location detected: 🇺🇸 United Statesvia ip

MarkMonitor Inc.en-US

Social Profiles

X (Twitter)GitHub

Sponsored

Last analyzed: 25 Apr 2026 at 19:53

Historical Analysis & Change Tracking