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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donorbox.org

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

Export

donorbox.org

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.18.23.83

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

neil.ns.cloudflare.com.linda.ns.cloudflare.com.

Performance

Page Speed

1.3 MB

115 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

HubSpot CMS

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

16 Technologies Detected

Analytics

Heap Analytics Crazy Egg

Advertising

Google Ads Twitter Ads LinkedIn Ads

CSS Frameworks

Icon Libraries

Tag Managers

Marketing

Customer Support

Payments

CDN

SEO Analysis

A+90/100

donorbox.orgdonorbox.org

Donorbox: #1 Donation Software & Nonprofit Fundraising Suite

Our all-in-one donation software powers online fundraising & donor relationship management with AI-powered CRM. Free online platform to create donate button ...

Description truncated.

Title Length60 chars

Recommended: 50-60 chars

Description Length197 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

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Crawlability

Sitemap

Type: standard

427 URLs

robots.txt

6 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

5%Critical

Critical / Transactional

HTTPS

WAF

52d

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

09.01.2026

Valid Until

09.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

donorbox.org*.donorbox.org

SHA-256 Fingerprint

B7:A6:48:43:79:03:2F:AD:B5:F2:C4:A5:84:D3:FF:E3:42:B9:F2:91...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

date

Mon, 16 Feb 2026 02:56:32 GMT

content-type

text/html; charset=utf-8

content-encoding

📦 Gzip(gzip)

cf-ray🇩🇪 Frankfurt

9ce9c5b8be2a30d8-FRA

cf-cache-status

HIT

age

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (5)

alt1.aspmx.l.google.com

aspmx.l.google.com

alt2.aspmx.l.google.com

alt4.aspmx.l.google.com

+1 more

Domain Information

donorbox.org

Domain Age

12y 4m

Created

23.09.2013

Expires

23.09.2030

Last Updated

16.05.2025

Registrar

NameCheap, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Typography & Readability

inter

73/100

Readability

/30

30/40

16px · LH --

Hierarchy

/20

25/25

2.25x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

inter

Sans36px

Body Font

inter

Sans16px

Contrast Ratio

Reading Comfort

~54 CPL

Optimal (45–75)

36px

30px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Strong hierarchy: Headlines are 2.2x 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

8 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Marketing Automation

ActiveCampaignMid-Market

Email marketing and automation platforms

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(3)snap.licdn.com(2)connect.facebook.net(2)static.ads-twitter.com(1)js.hscollectedforms.net(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube GitHub TikTok

Sponsored

Last analyzed: 16 Feb 2026 at 02:56

Historical Analysis & Change Tracking