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.

Back to Search

candid.org

https://candid.org· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

candid.org

Sponsored

Hosting Provider

WP Engine

wpengine.com

IP Address

141.193.213.30

Server Location

🇺🇸 Austin, United States

ASN

AS209242

Organization

WPEngine, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns-80.awsdns-10.com.ns-953.awsdns-55.net.ns-1093.awsdns-08.org.ns-1571.awsdns-04.co.uk.

Performance

Page Speed

1.3 MB

108 requests

Image Optimization

Lazy LoadWebPResponsiveUploadcare

0–49

50–89

90–100

Architecture Stack

Hybrid

⚡ SSG

Frontend

Framework

Next.js

CMS

WordPress

Infrastructure

Hosting

WP Engine

CDN

Cloudflare

Technology Stack

8 Technologies Detected

Analytics

Meta Frameworks

CSS Frameworks

Tag Managers

CDN

Plugins

SEO Analysis

A+94/100

candid.orgcandid.org

Research nonprofits, funders, and grants | Candid

Candid provides the most comprehensive grants and nonprofit data to help you find funding, research nonprofits, connect with funders, and more.

Title Length49 chars

Recommended: 50-60 chars

Description Length143 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

5 URLs

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

26%Critical

Interactive

HTTPS

WAF

63d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

24.03.2025

Valid Until

23.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (6)

candid.org*.candid.org*.foundationcenter.org*.guidestar.orgfoundationcenter.orgguidestar.org

SHA-256 Fingerprint

10:CE:7E:CD:22:6B:BD:60:71:24:06:3A:C9:81:87:7D:44:C6:F0:32...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

32940

alt-svc

h3=":443"; ma=86400

cache-control

⚪ Custom(s-maxage=43200, stale-while-revalidate)

cf-cache-status

HIT

cf-ray🇩🇪 Frankfurt

9d0833300a2f37ec-FRA

content-encoding

📦 Gzip(gzip)

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

candid-org.mail.protection.outlook.com

Domain Information

candid.org

Domain Age

29y 2m

Created

23.12.1996

Expires

22.12.2028

Last Updated

19.04.2024

Registrar

Amazon Registrar, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Algebra + Akkurat

61/100

Readability

/30

40/40

18px · LH 1.50

Hierarchy

/20

18/25

3.33x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Algebra

Sans60px

Body Font

Akkurat

Sans18px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

60px

24px

36px

18px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.3x larger than body text.

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

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

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

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Enterprise

CRM Systems

SalesforceEnterprise

Customer Relationship Management platforms

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(13)pi.pardot.com(2)googletagmanager.com(2)cdn.fundraiseup.com(1)connect.facebook.net(1)

Website Identity

Facebook Instagram LinkedIn YouTube

Sponsored

Last analyzed: 19 Feb 2026 at 19:34

Historical Analysis & Change Tracking