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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gbif.org

https://gbif.org· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

gbif.org

Sponsored

Hosting Provider

Danmarks Tekniske Universitet

IP Address

130.225.43.34

Server Location

🇩🇰 Aarhus, Denmark

ASN

AS1835

Organization

Danmarks Tekniske Universitet

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns-411.awsdns-51.com.ns-571.awsdns-07.net.ns-1047.awsdns-02.org.ns-1952.awsdns-52.co.uk.

Performance

Page Speed

1.7 MB

94 requests

Image Optimization

Thumbor

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Contentful

Infrastructure

Hosting

Danmarks Tekniske Universitet

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Detected API Sources

https://images.ctfassets.net/u...

Technology Stack

4 Technologies Detected

Frameworks

CSS Frameworks

Fonts

CDN

SEO Analysis

D55/100

gbif.orggbif.org

GBIF

No description available for this page.

Title Length4 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description - important for click-through rates
• Many images missing alt text (25/25)

5 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

41 rules

Sitemap reference found

Sponsored

Security Score

81%Very Good

Interactive

HTTPS

WAF

32d

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

21.12.2025

Valid Until

22.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.gbif.org

SHA-256 Fingerprint

D8:13:D9:7D:C5:9C:61:77:F1:46:31:CD:3E:30:05:F4:18:E8:2B:89...

Upgrade to view header details

HTTP Headers

Developer Console

date

Tue, 17 Feb 2026 22:04:15 GMT

content-type

text/html; charset=utf-8

content-security-policy

default-src maxcdn.bootstrapcdn.com cdn.jsdelivr.net/codemir...

x-dns-prefetch-control

off

expect-ct

max-age=0

x-frame-options

SAMEORIGIN

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

gbif-org.mail.protection.outlook.com

Domain Information

gbif.org

Domain Age

26y 7m

Created

26.07.1999

Expires

26.07.2026

Last Updated

05.12.2022

Registrar

Amazon Registrar, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

Helvetica Neue

62/100

Readability

/30

20/40

12px · LH 1.43

Hierarchy

/20

21/25

3.75x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Helvetica Neue

Sans45px

Body Font

Helvetica Neue

Sans12px

Contrast Ratio

Reading Comfort

~53 CPL

Optimal (45–75)

45px

13px

18px

14px

12px

❌ Critical: 12px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.43 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.8x 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.

GGoogle Fonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)static.cloudflareinsights.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube

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Last analyzed: 17 Feb 2026 at 22:04

Historical Analysis & Change Tracking