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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toptal.com

https://toptal.com· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

toptal.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.18.29.213

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

adam.ns.cloudflare.com.jo.ns.cloudflare.com.

Performance

Page Speed

1 KB

106 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

CMS

Magento

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

12 Technologies Detected

Frameworks

Analytics

Meta Frameworks

Other

CSS Frameworks

Tag Managers

CDN

Security

Customer Support

Marketing

SEO Analysis

A84/100

toptal.comtoptal.com

Toptal - Hire Talent from the Top 3%

Toptal enables businesses to hire the world’s top talent. Since 2010, 25,000+ clients have trusted Toptal for talent, teams, and end-to-end solutions.

Title Length36 chars

Recommended: 50-60 chars

Description Length150 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (67/119)

1 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

18 rules

Sitemap reference found

Sponsored

A+

Security Score

93%Excellent

Static / Informational

HTTPS

WAF

60d

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

14.01.2026

Valid Until

14.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

toptal.com*.toptal.com

SHA-256 Fingerprint

A9:93:EE:E5:57:01:21:8E:11:BE:E0:8D:A7:EC:17:75:BF:AD:4E:42...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🟡 600s(public, max-age=600)

cf-cache-status

HIT

cf-ray🇩🇪 Frankfurt

9ccce61a6d66911f-FRA

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (7)

aspmx2.googlemail.com

aspmx4.googlemail.com

aspmx3.googlemail.com

alt2.aspmx.l.google.com

+3 more

Domain Information

toptal.com

Domain Age

15y 6m

Created

26.07.2010

Expires

26.07.2026

Last Updated

25.06.2024

Registrar

DreamHost, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

proxima-nova

78/100

Readability

/30

32/40

14px · LH 1.43

Hierarchy

/20

25/25

3.29x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

proxima-nova

Sans46px

Body Font

proxima-nova

Sans14px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

46px

20px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.43 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.3x 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

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

frontier-assets.toptal.com(16)googletagmanager.com(2)google-analytics.com(1)appinfo.toptal.com(1)

Website Identity

toptal.com

15 years old

DreamHost, LLC📧 Google Workspace

Social Profiles

Facebook X (Twitter)Instagram LinkedIn

Sponsored

Last analyzed: 12 Feb 2026 at 14:50

Historical Analysis & Change Tracking