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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futurelearn.com

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

Export

futurelearn.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.18.29.94

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

scott.ns.cloudflare.com.veda.ns.cloudflare.com.

Performance

Page Speed

575 KB

62 requests

Image Optimization

Lazy LoadWebPResponsiveVercel Image Optimization

0–49

50–89

90–100

Architecture Stack

JAMstack

⚙️ SSR

Decoupled

Frontend

Framework

Next.js

Styling

Tailwind CSS

API

Data Source

Headless CMS

Contentful

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Detected API Sources

https://images.ctfassets.net/2...

Technology Stack

9 Technologies Detected

Analytics

Meta Frameworks

CSS Frameworks

Fonts

Adobe Fonts (Typekit)

Tag Managers

Email Marketing

Customer Support

CDN

SEO Analysis

A+90/100

futurelearn.comfuturelearn.com

FutureLearn: Online Courses and Degrees from Top Universities

Join millions of people learning on FutureLearn. Find online courses and degrees from leading universities or organisations and start learning online today.

Title Length61 chars

Recommended: 50-60 chars

Description Length156 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

11 rules

Sitemap reference found

Sponsored

Security Score

86%Very Good

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

11.02.2026

Valid Until

12.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

futurelearn.com*.futurelearn.com

SHA-256 Fingerprint

58:9C:37:23:4A:D2:1B:A5:1A:EE:FB:B7:8E:50:20:19:1A:F2:14:9C...

Upgrade to view header details

HTTP Headers

Developer Console

date

Thu, 12 Feb 2026 23:31:48 GMT

content-type

text/html; charset=utf-8

content-encoding

📦 Gzip(gzip)

x-powered-by

Next.js

set-cookie

test_identity

x-frame-options

SAMEORIGIN

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

aspmx.l.google.com

aspmx3.googlemail.com

alt2.aspmx.l.google.com

aspmx2.googlemail.com

+1 more

Domain Information

futurelearn.com

Domain Age

13y 5m

Created

27.08.2012

Expires

27.08.2029

Last Updated

22.07.2025

Registrar

Gandi SAS

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Typography & Readability

Helvetica Neue

60/100

Readability

/30

32/40

16px · LH 1.50

Hierarchy

/20

25/25

3.09x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Helvetica Neue

Sans50px

Body Font

Helvetica Neue

Sans16px

Contrast Ratio

Reading Comfort

~42 CPL

Needs attention

50px

22px

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.1x 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.

AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(19)googletagmanager.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube

Sponsored

Last analyzed: 12 Feb 2026 at 23:32

Historical Analysis & Change Tracking