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

upwork.com

https://upwork.com· First analyzed 11 Feb 2026· Updated 11 Feb 2026

Export

upwork.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.18.90.237

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

fay.ns.cloudflare.com.jim.ns.cloudflare.com.

Performance

Page Speed

1 MB

124 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

CMS

Webflow

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

19 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Email Marketing

Constant Contact AWeber

Customer Support

Frameworks

Meta Frameworks

Other

CSS Frameworks

Tag Managers

Advertising

Other

Other

Payments

Other

CDN

Security

Marketing

SEO Analysis

A+100/100

upwork.comupwork.com

Upwork | Hire Top Freelance Talent with Confidence

Upwork is the world’s largest human and AI-powered freelance marketplace to hire top talent—trusted by businesses and professionals worldwide.

Title Length50 chars

Recommended: 50-60 chars

Description Length142 chars

Recommended: 120-160 chars

Sponsored

Security Score

35%Critical

Critical / Transactional

HTTPS

WAF

84d

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

date

Wed, 11 Feb 2026 05:23:39 GMT

content-type

text/html; charset=utf-8

content-encoding

⚡ Brotli(br)

set-cookie

visitor_id

vary

Accept-Encoding

cache-control

🔴 No Cache(no-store)

Good Warning Issue

Typography & Readability

neue-montreal-fallback

84/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

21/25

4.5x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

neue-montreal-fallback

Sans72px

Body Font

neue-montreal-fallback

Sans16px

Contrast Ratio

Reading Comfort

~42 CPL

Needs attention

72px

34px

28px

40px

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 4.5x larger than body text.

✅ 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.

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

A/B Testing & Optimization

VWO (Visual Website Optimizer)Mid-Market

Experimentation and conversion optimization

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

upwork.com(15)googletagmanager.com(2)4c4cc75a16ed.cdn4.forter.com(1)cdn.cookielaw.org(1)local(1)

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Last analyzed: 11 Feb 2026 at 05:24

Historical Analysis & Change Tracking