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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carbonbrief.org

https://carbonbrief.org· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

carbonbrief.org

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.20.22.69

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

kristina.ns.cloudflare.com.damiete.ns.cloudflare.com.

Performance

Page Speed

2.3 MB

131 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

WordPressv6.8.3

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

23 Technologies Detected

Plugins

Contact Form 7

Official Mailerlite Sign Up Forms Wp User Avatar Search Filter Pro Wp Pagenavi

Analytics

Libraries

UI Components

Slick Carousel Owl Carousel

CSS Frameworks

Icon Libraries

Tag Managers

CDN

Security

SEO Analysis

C64/100

carbonbrief.orgcarbonbrief.org

Home - Carbon Brief » Clear on climate

Carbon Brief covers climate science, energy and policy, specialising in clear, data-driven articles to improve the understanding of climate change.

Title Length38 chars

Recommended: 50-60 chars

Description Length147 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (33/33)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

1 rules

Allows all crawlers

Sponsored

Security Score

26%Critical

Interactive

HTTPS

WAF

60d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

17.01.2026

Valid Until

17.04.2026

Subject Alternative Names (1)

www.carbonbrief.org

SHA-256 Fingerprint

B3:6B:77:AA:B7:B6:67:0D:9F:E5:DD:69:FC:C2:B5:CC:A3:95:A2:1B...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

date

Mon, 16 Feb 2026 05:08:11 GMT

content-type

text/html; charset=UTF-8

server

cloudflare

age

273

cf-cache-status

DYNAMIC

vary

Accept-Encoding, Cookie

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

alt1.aspmx.l.google.com

aspmx.l.google.com

alt2.aspmx.l.google.com

alt3.aspmx.l.google.com

+1 more

Domain Information

carbonbrief.org

Domain Age

15y 2m

Created

06.12.2010

Expires

06.12.2028

Last Updated

20.01.2026

Registrar

Mesh Digital Limited

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

PT Sans + serif

43/100

Readability

/30

32/40

15px · LH 1.40

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

PT Sans

Body Font

serif

Serif15px

Contrast Ratio

Reading Comfort

~51 CPL

Optimal (45–75)

24px

15px

⚠️ Small text: 15px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

✅ Good performance: Using 2 font families keeps load times fast.

⚠️ Risky: Text appears on background images without overlay protection.

✅ Optimal line length: ~50 characters per line is comfortable to read.

⚠️ Cramped layout: 96 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

6 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

HotjarMid-Market

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

assets.mailerlite.com(4)carbonbrief.org(4)gstatic.com(2)connect.facebook.net(2)googletagmanager.com(2)

Website Identity

carbonbrief.org

15 years old

Mesh Digital Limited📧 Google Workspace

Social Profiles

Facebook X (Twitter)Instagram LinkedIn YouTube Bluesky

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Last analyzed: 16 Feb 2026 at 05:09

Historical Analysis & Change Tracking