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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behr.com

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

Export

behr.com

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

44.254.223.14

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Portland, United States

ASN

AS16509

Organization

AWS EC2 (us-west-2)

Server

PWS/8.3.1.0.8

Nameservers

ns2.cdnetdns.net.ns1.cdnetdns.net.

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%

23.6 MB

250 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

CMS

Ghost

Infrastructure

Hosting

Amazon Web Services (AWS)

Technology Stack

15 Technologies Detected

Advertising

Google Ads Pinterest Tag TikTok Pixel Snapchat Pixel Microsoft Advertising

Analytics

CSS Frameworks

Frameworks

Libraries

UI Components

Icon Libraries

Tag Managers

SEO Analysis

B71/100

Meta Tags15/15

Content11/12

Headings3/8

Technical22/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social2/5

Freshness0/4

Mobile3/4

Indexability3/3

behr.combehr.com

Exterior Paint | Interior Paint | Wood Stains | Behr

Browse through all of the exterior paint, interior paint and wood stains available from Behr, offering paints that are perfect for your next project.

Title Length52 chars

Recommended: 50-60 chars (~305px / 580px)

Description Length149 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

5 URLs

5 sub-sitemaps

robots.txt

37 rules

Sitemap reference found

Local SEO

Local Search Readiness

28/100

Needs Work

7 10 2

Sponsored

AI & LLM Readiness

F38/100

Bot Access

20/25

Machine Read.

2/25

Schema Data

0/25

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:6%

Words:4,433

Token eff.:Poor Structure

Depth:1/5

Structured Data

Microdata

Citation Readiness

Opening Summary88w

Descriptive Headingsavg 3.2w

Canonical URL

Open Graph3/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

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.

72/100

Passed

Critical

Warnings

Images & Alt Text

13/20

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

Semantic Structure

9/20

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

11/15

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.

4 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.

34/100

2.45 g

CO₂e / view

23.6 MB

Page Weight

Cleaner Than

New Visitor

2.80 g

Returning (cached)

1.40 g

Annual (10K/mo)

293.5 kg

Emission Segments

Data Center

120 mg

Network

719 mg

Device

1.61 g

Resource Breakdown

JavaScript

2.4 MB

Images

20.5 MB

CSS

360.7 KB

Fonts

200.4 KB

HTML

45.4 KB

Other

159.7 KB

Green Hosting Verified

Amazon Web Services (AWS)

Provider Match

8 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

84d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

18.06.2025

Valid Until

20.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

ssl2.cdngc.netcdn.speakingbuddy.aiwww.behr.cawww.behr.clwww.behr.comstatic.qa6.calottery.comstatic.stage.calottery.comstatic.www.calottery.com+12 more

SHA-256 Fingerprint

A7:DA:B4:AE:17:FD:D8:D0:7E:56:7E:37:10:C2:ED:25:FF:E1:9A:84...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

194754

cache-control

🟡 1800s(max-age=1800)

content-encoding

📦 Gzip(gzip)

content-type

text/html;charset=UTF-8

date

Sun, 26 Apr 2026 12:18:24 GMT

server

PWS/8.3.1.0.8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mxb-00356001.gslb.pphosted.com

mxa-00356001.gslb.pphosted.com

Domain Information

behr.com

Domain Age

30y 1m

Created

21.03.1996

Expires

22.03.2027

Last Updated

21.01.2026

Registrar

Nom-iq Ltd. dba COM LAUDE

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

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.

69/100

Mobile Friendly19 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

3 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

alternate-gothic-atf + proxima-nova

WCAG Partial

54/100

Readability

/30

19/30

18px · LH 1.33

Hierarchy

/20

7/20

WCAG

/25

10/25

4.02:1 min contrast

Performance

/25

18/25

2 fonts · 1 req

Heading Font

alternate-gothic-atf

Sans

Body Font

proxima-nova

Sans18px

Contrast Ratio

4.02:1

3 issues

Reading Comfort

~32 CPL

Narrow lines

45px

30px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

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

⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 4.0:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

✅ Lean font stack: 2 font families keeps load times fast.

Buy on MyFonts

Color Palette

10 unique colors

Dark

#46504b

Text· 6.3%

#f6f5f0

Primary· 28.5%

#987f6e

Secondary· 24.2%

#c6c6b4

Secondary· 7.7%

#84745e

Secondary· 7.4%

#413e1e

Secondary· 7.2%

#27200e

Secondary· 5.8%

#645a38

Secondary· 5.1%

Business & Marketing Stack

9 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Pinterest AdsMid-Market

TikTok PixelMid-Market

Microsoft AdsEnterprise

Snapchat PixelMid-Market

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Social widgets and sharing tools

Reviews & Social Proof

BazaarvoiceEnterprise

Customer reviews and testimonials

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

analytics.tiktok.com(3)connect.facebook.net(3)googletagmanager.com(3)tr.snapchat.com(2)analytics.behr.com(1)

Website Identity

behr.com

30 years old

Location detected: 🇺🇸 United Statesvia ip

Nom-iq Ltd. dba COM LAUDEen

Social Profiles

Facebook Instagram TikTok Pinterest

Sponsored

Last analyzed: 26 Apr 2026 at 12:19

Historical Analysis & Change Tracking