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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hackerrank.com

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

Export

hackerrank.com

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

52.200.234.246

Server Location

🇺🇸 Ashburn, United States

ASN

AS14618

Organization

AWS EC2 (us-east-1)

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns-1691.awsdns-19.co.uk.ns-431.awsdns-53.com.ns-525.awsdns-01.net.ns-1314.awsdns-36.org.

Performance

Page Speed

53 KB

56 requests

Image Optimization

Lazy LoadAVIFResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Amazon Web Services (AWS)

CDN

Cloudflare

Technology Stack

11 Technologies Detected

Analytics

Libraries

Other

CSS Frameworks

Fonts

Tag Managers

Other

CDN

Marketing

Customer Support

SEO Analysis

A+96/100

hackerrank.comhackerrank.com

HackerRank - Online Coding Tests and Technical Interviews

HackerRank is the market-leading coding test and interview solution for hiring developers. Start hiring at the pace of innovation!

Title Length57 chars

Recommended: 50-60 chars

Description Length130 chars

Recommended: 120-160 chars

Sponsored

Security Score

71%Good

Interactive

HTTPS

WAF

303d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

14.12.2025

Valid Until

15.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.hackerrank.comhackerrank.com

SHA-256 Fingerprint

5D:99:45:BA:64:D1:EA:CD:9F:EE:7D:10:9A:45:18:93:5D:AF:76:D6...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

akamai-cache-status

RefreshHit from child, RefreshHit from parent

akamai-grn

0.b6c61302.1771152123.2ad550cb

cache-control

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

cf-cache-status

HIT

cf-ray🇮🇹 Milan

9ce258ba6f96ee50-MXP

content-encoding

📦 Gzip(gzip)

Good Warning Issue

Email Infrastructure

Mimecast

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

usb-smtp-inbound-1.mimecast.com

usb-smtp-inbound-2.mimecast.com

Domain Information

hackerrank.com

Domain Age

13y 8m

Created

30.05.2012

Expires

30.05.2027

Last Updated

07.05.2024

Registrar

Name.com, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

Satoshi

76/100

Readability

/30

40/40

20px · LH 1.60

Hierarchy

/20

18/25

4x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Satoshi

Sans80px

Body Font

Satoshi

Sans20px

Contrast Ratio

Reading Comfort

~34 CPL

Needs attention

80px

56px

48px

20px

✅ Excellent readability: 20px body text is ideal for all devices.

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 4.0x 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

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

A/B Testing & Optimization

VWO (Visual Website Optimizer)Mid-Market

Experimentation and conversion optimization

Sponsored

Scripts & Styles

16 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.prod.website-files.com(8)cdnjs.cloudflare.com(3)d3e54v103j8qbb.cloudfront.net(1)code.jquery.com(1)cdn.jsdelivr.net(1)

Website Identity

hackerrank.com

13 years old

Name.com, Inc.📧 Mimecast

Social Profiles

Facebook X (Twitter)Instagram LinkedIn

Sponsored

Last analyzed: 15 Feb 2026 at 10:42

Historical Analysis & Change Tracking