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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readingrockets.org

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

Export

readingrockets.org

Sponsored

Hosting Provider

DigitalOcean

digitalocean.com

IP Address

178.128.133.105

Server Location

🇺🇸 North Bergen, United States

ASN

AS14061

Organization

Digitalocean

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

dns2.cscdns.net.dns1.cscdns.net.

Performance

Page Speed

1.9 MB

62 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Technology Stack

13 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Hotjar

Fonts

Adobe Fonts (Typekit)Adobe Fonts

Libraries

Other

Other

CSS Frameworks

Icon Libraries

Tag Managers

Email Marketing

CDN

SEO Analysis

B70/100

readingrockets.orgreadingrockets.org

Reading Rockets: Launching Young Readers

Reading Rockets is a national public media literacy initiative offering information and resources on how young kids learn to read, why so many struggle, and ...

Description truncated.

Title Length40 chars

Recommended: 50-60 chars

Description Length184 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

53 rules

Sponsored

Security Score

46%Poor

Interactive

HTTPS

WAF

45d

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

06.01.2026

Valid Until

06.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.readingrockets.org

SHA-256 Fingerprint

AA:4E:FC:24:9B:26:0A:DA:B6:94:8C:5B:20:A1:3E:F2:20:2D:97:96...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 300s(max-age=300, public)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9d08f6cfef29dbf7-FRA

content-encoding

⚡ Brotli(br)

content-language

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

readingrockets-org.mail.protection.outlook.com

Domain Information

readingrockets.org

Domain Age

25y 11m

Created

13.03.2000

Expires

13.03.2027

Last Updated

12.07.2025

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

multi-display + sans-serif

71/100

Readability

/30

40/40

17px · LH 1.60

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

multi-display

Sans

Body Font

sans-serif

Sans17px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

34px

25px

15px

17px

✅ Excellent readability: 17px body text is ideal for all devices.

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

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

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

⚠️ Cramped layout: 77 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Advanced

Marketing Automation

MailchimpSMB

Email marketing and automation platforms

Behavior Analytics

HotjarMid-Market

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(6)googletagmanager.com(2)st.getsitecontrol.com(1)widgets.getsitecontrol.com(1)static.hotjar.com(1)

Website Identity

Facebook X (Twitter)YouTube Pinterest

Sponsored

Last analyzed: 19 Feb 2026 at 21:47

Historical Analysis & Change Tracking