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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10minutemail.com

https://10minutemail.com· First analyzed 26 Apr 2026· Updated 26 Apr 2026

Export

10minutemail.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.66.42.230

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

john.ns.cloudflare.com.rihana.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

412 ms10%

Speed Index

536 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

10 KB

10 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

8 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Advertising

Google Ads Google AdSense

CSS Frameworks

Tag Managers

Payments

CDN

SEO Analysis

B72/100

Meta Tags8/15

Content6/12

Headings8/8

Technical22/25

E-E-A-T5/7

Images2/7

Links5/5

URL5/5

Social5/5

Freshness2/4

Mobile1/4

Indexability3/3

10minutemail.com10minutemail.com

10 Minute Mail - Free Temp Mail & Temporary Email Service - 10 Minu...

Free temp mail that self-destructs in 10 minutes. The original temp email and disposable email service since 2006. No signup needed. Get your free temporary ...

Title truncated. Description truncated.

Title Length107 chars

Recommended: 50-60 chars (~661px / 580px)

Description Length181 chars

Recommended: 120-160 chars

Issues (2)

• Title is too long (107 chars, ~661px). Will be truncated in search results.
• Most images missing alt text (1/1) — critical for accessibility and SEO

8 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

13 rules

Sitemap reference found

Local SEO

Local Search Readiness

17/100

Poor

4 13

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

Sponsored

AI & LLM Readiness

D56/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

8/25

Citation

15/25

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

header/footer

Text ratio:3%

Words:320

Token eff.:Optimal

Sections/1K:15.6

Depth:1/5

Structured Data

3 JSON-LD

Person×1.3Organization×1.1WebSite

sameAs entity links

Citation Readiness

Opening Summary10w

Descriptive Headingsavg 3.8w

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.

86/100

Passed

Critical

Warnings

Images & Alt Text

18/20

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

Semantic Structure

20/20

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.

1 recommendation

•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.

83/100

A+

1 mg

CO₂e / view

9.7 KB

Page Weight

95%

Cleaner Than

New Visitor

1 mg

Returning (cached)

<0.001 g

Annual (10K/mo)

120 g

Emission Segments

Data Center

<0.001 g

Network

<0.001 g

Device

<0.001 g

Resource Breakdown

HTML

9.7 KB

Green Hosting Verified

Cloudflare

Provider Match

3 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

25%Critical

Critical / Transactional

HTTPS

WAF

88d

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

24.04.2026

Valid Until

23.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

10minutemail.com*.10minutemail.com

SHA-256 Fingerprint

86:42:5D:85:5B:A1:7B:9C:CA:F8:DA:81:66:76:40:D6:3A:3B:AD:56...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

alt-svc

h3=":443"; ma=86400

cache-control

🔴 No Cache(no-cache, no-store, max-age=0, must-revalidate)

cf-cache-status

DYNAMIC

cf-ray

9f2153fe7ad64271-EWR

content-encoding

⚡ Brotli(br)

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

10minutemail.com

Domain Age

19y 5m

Created

03.11.2006

Expires

03.11.2026

Last Updated

04.10.2025

Registrar

Cloudflare, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

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.

73/100

Mobile Friendly2 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

Space Grotesk

WCAG Partial

76/100

Readability

/30

21/30

16px · LH 1.65

Hierarchy

/20

17/20

2x ratio · ✓ H1→H6

WCAG

/25

17/25

1.1:1 min contrast

Performance

/25

21/25

1 font

Heading Font

Space Grotesk

Sans32px

Body Font

Space Grotesk

Sans16px

Contrast Ratio

1.1:1

20 issues

Reading Comfort

~40 CPL

Narrow lines

32px

36px

20px

12px

16px

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

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

⚠️ Partial contrast: 20 elements below WCAG AA threshold (min 1.1:1).

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

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

Buy on MyFontsFluid Type (rem)Flesch 0

Color Palette

5 unique colors

Light

#f1f4f9

Primary· 75.30000000000001%

#2b3545

Secondary· 15.5%

#b8cfd1

Secondary· 5.2%

#63acbd

Secondary· 2.3%

#c5e7eb

Secondary· 1.6%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

fundingchoicesmessages.google.com(4)live.demand.supply(3)local(3)google-analytics.com(2)googletagmanager.com(2)

Website Identity

10 Minute Mail

Organization

The original free temporary email service. Protecting user privacy since November 2006. All data stored in memory only - nothing is ever saved to disk.

19 years old

Location detected: 🇨🇦 Canadavia ip

Cloudflare, Inc.enEst. 2006

Sponsored

Last analyzed: 26 Apr 2026 at 00:05

Historical Analysis & Change Tracking