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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hmhco.com

https://hmhco.com· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

hmhco.com

Sponsored

Hosting Provider

Incapsula Inc

IP Address

45.60.101.203

Server Location

🇺🇸 San Mateo, United States

ASN

AS19551

Organization

Incapsula Inc

Server

Nginx

CDN

CloudFront

Nameservers

ns-1900.awsdns-45.co.uk.ns-341.awsdns-42.com.ns-951.awsdns-54.net.ns-1193.awsdns-21.org.

Performance

Page Speed

603 KB

59 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Craft CMS

Technology Stack

8 Technologies Detected

Analytics

Libraries

Other

CSS Frameworks

Tag Managers

Other

Web Servers

SEO Analysis

A+94/100

hmhco.comhmhco.com

HMH: K-12 Adaptive Learning Company

An adaptive learning company, HMH creates K-12 integrated curriculum, assessment and professional learning solutions that power students’ growth.

Title Length35 chars

Recommended: 50-60 chars

Description Length145 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

4 URLs

robots.txt

52 rules

Sitemap reference found

Sponsored

Security Score

46%Poor

Interactive

HTTPS

WAF

150d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

21.01.2026

Valid Until

20.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

*.unitsofstudy.compre.channelone.com*.gomathacademy.comdigital.fountasandpinnell.comanalytics.gogetwaggle.comwww.gogetwaggle.comfpdms.heinemann.com*.edr00.slkcut01.nwea.org+12 more

SHA-256 Fingerprint

02:FB:83:95:90:B2:B0:78:D8:FD:86:69:F5:02:CA:1E:6B:5E:0B:DB...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 0s(max-age=0)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Fri, 20 Feb 2026 01:45:16 GMT

etag

W/"67770-WkT9DPPoMLRzFNcoDnMtk/a6sN4"

expires

Fri, 20 Feb 2026 01:45:16 GMT

Good Warning Issue

Email Infrastructure

Mimecast

Score

SPF

DKIM

DMARC

MX Records (2)

us-smtp-inbound-2.mimecast.com

us-smtp-inbound-1.mimecast.com

Domain Information

hmhco.com

Domain Age

19 years

Created

18.02.2007

Expires

18.02.2027

Last Updated

03.02.2026

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

HMHMicro-Medium + ProximaNova

86/100

Readability

/30

40/40

24px · LH 1.50

Hierarchy

/20

25/25

3.33x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

HMHMicro-Medium

Sans80px

Body Font

ProximaNova

Sans24px

Contrast Ratio

Reading Comfort

~33 CPL

Needs attention

80px

36px

28px

24px

✅ Excellent readability: 24px 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.

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

A/B Testing & Optimization

AB TastyMid-Market

Experimentation and conversion optimization

Sponsored

Scripts & Styles

15 Resources

Scripts

Styles

Async

Defer

Top Script Sources

d.oracleinfinity.io(4)googletagmanager.com(2)local(2)scripts.clarity.ms(1)clarity.ms(1)

Website Identity

Facebook Instagram LinkedIn YouTube Pinterest

Sponsored

Last analyzed: 20 Feb 2026 at 01:45

Historical Analysis & Change Tracking