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.

Back to Search

pair.com

https://pair.com· First analyzed 15 Feb 2026· Updated 15 Feb 2026

Export

pair.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.21.34.254

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

pdns0.pit.pair.net.pdns0.den.pair.net.

Performance

Page Speed

1.3 MB

66 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

Diviv4.27.4

by Elegant Themes

View Theme

Technology Stack

14 Technologies Detected

Analytics

Plugins

CSS Frameworks

Libraries

Icon Libraries

Fonts

Tag Managers

Customer Support

CDN

SEO Analysis

A82/100

pair.compair.com

Buy A Domain | Website Hosting | Custom Web Design

Buy a domain, get reliable website hosting, and launch with affordable web design. Everything you need to build your online presence—backed by 25+ years.

Title Length50 chars

Recommended: 50-60 chars

Description Length153 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (9/13)

1 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

1 URLs

robots.txt

4 rules

Sitemap reference found

Sponsored

Security Score

61%Fair

Interactive

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

Valid From

13.02.2026

Valid Until

14.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.pair.com

SHA-256 Fingerprint

20:71:49:AC:56:36:27:C8:57:05:64:DB:AA:D5:3B:93:94:D8:75:4A...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 600s(max-age=600, public)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9ce0cee0cf65145d-FRA

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Sun, 15 Feb 2026 00:49:55 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mx.pair.com

Domain Information

pair.com

Domain Age

30y 6m

Created

18.08.1995

Expires

17.08.2026

Last Updated

01.03.2025

Registrar

pair Networks, Inc. d/b/a pair Domains

DNSSEC

Not Enabled

Privacy & Compliance

Complianz

Cookie Consent Banner

Complianz

GDPR Indicators

Cookie consent banner detected

CMP: Complianz

Typography & Readability

Helvetica

68/100

Readability

/30

32/40

30px · LH 1.27

Hierarchy

/20

15/25

1.33x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Helvetica

Sans40px

Body Font

Helvetica

Sans30px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

40px

16px

14px

16px

30px

✅ Excellent readability: 30px body text is ideal for all devices.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

✅ Good performance: Using 1 font families keeps load times fast.

✅ 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.

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

Business & Marketing Stack

5 Tools Detected

Enterprise

Customer Support

ZendeskEnterprise

Live chat and helpdesk tools

Behavior Analytics

Crazy EggSMB

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

ComplianzSMB

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

(11)pair.com(4)googletagmanager.com(3)script.crazyegg.com(2)

Website Identity

pair.com

30 years old

pair Networks, Inc. d/b/a pair Domains

Social Profiles

Facebook X (Twitter)Instagram YouTube TikTok

Sponsored

Last analyzed: 15 Feb 2026 at 00:50

Historical Analysis & Change Tracking