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

ascd.org

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

Export

ascd.org

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

44.216.132.7

Server Location

🇺🇸 Ashburn, United States

ASN

AS14618

Organization

AWS EC2 (us-east-1)

Server

Nginx

Nameservers

ns-339.awsdns-42.com.ns-990.awsdns-59.net.ns-1501.awsdns-59.org.ns-1767.awsdns-28.co.uk.

Performance

Page Speed

741 KB

123 requests

Image Optimization

Lazy LoadResponsiveVercel Image Optimization

0–49

50–89

90–100

Architecture Stack

JAMstack

⚡ SSG

Decoupled

Frontend

Framework

Next.js

API

Data Source

Headless CMS

Contentful

Infrastructure

Hosting

Amazon Web Services (AWS)

CDN

Vercel Image

Detected API Sources

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

Technology Stack

14 Technologies Detected

Analytics

CSS Frameworks

Advertising

Twitter Ads LinkedIn Ads

Meta Frameworks

Libraries

Tag Managers

Marketing

Web Servers

SEO Analysis

D58/100

ascd.orgascd.org

ASCD

We create practical, timely, affordable professional learning to help educators and instructional leaders provide students with a modern, equitable, and qual...

Description truncated.

Title Length4 chars

Recommended: 50-60 chars

Description Length171 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

41,725 URLs

robots.txt

4 rules

Sitemap reference found

Sponsored

Security Score

81%Very Good

Static / Informational

HTTPS

No WAF

357d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

10.01.2026

Valid Until

08.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.ascd.orgascd.org

SHA-256 Fingerprint

6A:5A:9B:F6:EF:43:71:7C:4B:A1:35:E4:34:56:34:A4:AF:12:60:B6...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

⚪ Custom(s-maxage=20, stale-while-revalidate=31535980)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Mon, 16 Feb 2026 22:19:06 GMT

document-policy

js-profiling

server

nginx/1.28.1

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

ascd-org.mail.protection.outlook.com

Domain Information

ascd.org

Domain Age

31y 7m

Created

14.07.1994

Expires

13.07.2026

Last Updated

19.07.2025

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Typography & Readability

Poppins + sans-serif

51/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

15/25

1.25x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Poppins

Sans20px

Body Font

sans-serif

Sans16px

Contrast Ratio

Reading Comfort

~83 CPL

Needs attention

20px

32px

24px

20px

16px

Minor Second

Scale

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

✅ Good performance: Using 1 font families keeps load times fast.

✅ Consistent design: Single font family with weight variations is a modern best practice.

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

Buy on MyFonts

Business & Marketing Stack

12 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Behavior Analytics

HotjarMid-Market

Google Tag ManagerFree

Google AnalyticsFree

MouseflowSMB

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

CookiebotMid-Market

OneTrustEnterprise

Cookie consent and privacy compliance tools

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Reviews & Social Proof

TrustpilotMid-Market

Customer reviews and testimonials

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)google-analytics.com(2)id.tinypass.com(2)connect.facebook.net(2)tags.srv.stackadapt.com(1)

Website Identity

ascd.org

31 years old

Network Solutions, LLC📧 Microsoft 365

Social Profiles

Facebook X (Twitter)Instagram LinkedIn YouTube Pinterest

Sponsored

Last analyzed: 16 Feb 2026 at 22:20

Historical Analysis & Change Tracking