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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climatecentral.org

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

Export

climatecentral.org

Sponsored

Hosting Provider

Vercel

vercel.com

IP Address

76.76.21.21

Server Location

🇺🇸 Walnut, United States

ASN

AS16509

Organization

Vercel, Inc

Server

Vercel

Nameservers

ns-382.awsdns-47.com.ns-674.awsdns-20.net.ns-1025.awsdns-00.org.ns-2008.awsdns-59.co.uk.

Performance

Page Speed

805 KB

50 requests

Image Optimization

Lazy LoadWebPResponsiveVercel Image Optimization

0–49

50–89

90–100

Architecture Stack

JAMstack

🔀 Hybrid

Decoupled

Frontend

Framework

Next.js

API

Data Source

Headless CMS

Contentful

Infrastructure

Hosting

Vercel

CDN

Vercel Image

Progressive Web App

Web ManifestApple Touch IconTheme Color

Detected API Sources

https://images.ctfassets.net/c...

Technology Stack

7 Technologies Detected

Meta Frameworks

Analytics

CSS Frameworks

Tag Managers

Platforms

SEO Analysis

B70/100

climatecentral.orgclimatecentral.org

Climate Central

Climate Central researches and reports on the impacts of climate change, including sea level rise and coastal flooding, extreme weather and weather attributi...

Description truncated.

Title Length15 chars

Recommended: 50-60 chars

Description Length250 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

2 rules

Sitemap reference found

Allows all crawlers

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Security Score

36%Critical

Interactive

HTTPS

No WAF

68d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

26.01.2026

Valid Until

26.04.2026

Subject Alternative Names (1)

www.climatecentral.org

SHA-256 Fingerprint

2C:EE:E5:A2:1B:6A:A7:7F:E9:DD:60:07:AD:1A:2A:22:B7:6B:B2:FC...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

age

cache-control

🟡 0s(public, max-age=0, must-revalidate)

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=utf-8

date

Mon, 16 Feb 2026 23:09:57 GMT

etag

W/"ta4smcdxb6489e"

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (3)

aspmx.l.google.com

alt1.aspmx.l.google.com

alt2.aspmx.l.google.com

Domain Information

climatecentral.org

Domain Age

20y 1m

Created

21.01.2006

Expires

21.01.2029

Last Updated

18.03.2025

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

Maitree

71/100

Readability

/30

32/40

18px · LH 1.33

Hierarchy

/20

18/25

3.56x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Maitree

Sans64px

Body Font

Maitree

Sans18px

Contrast Ratio

Reading Comfort

~33 CPL

Needs attention

64px

36px

24px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Strong hierarchy: Headlines are 3.6x larger than body text.

✅ Good performance: Using 2 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.

✅ Protected text on images: Using gradient for readability.

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

28 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(16)googletagmanager.com(2)

Website Identity

climatecentral.org

20 years old

GoDaddy.com, LLC📧 Google Workspace

Social Profiles

Facebook X (Twitter)Instagram LinkedIn YouTube Bluesky

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Last analyzed: 16 Feb 2026 at 23:10

Historical Analysis & Change Tracking