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

nspcc.org.uk

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

Export

nspcc.org.uk

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.18.3.208

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

frank.ns.cloudflare.com.nelci.ns.cloudflare.com.

Performance

Page Speed

4.1 MB

54 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Optimizely CMS (Episerver)

Technology Stack

8 Technologies Detected

Libraries

Other

CSS Frameworks

Analytics

Tag Managers

Other

CDN

Frameworks

SEO Analysis

B70/100

nspcc.org.uknspcc.org.uk

NSPCC | The UK children's charity | NSPCC

As the leading children's charity, the NSPCC believes that every childhood is worth fighting for. Discover how you can help us keep children safe.

Title Length41 chars

Recommended: 50-60 chars

Description Length146 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (7/13)

3 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

6 rules

Sitemap reference found

Sponsored

Security Score

36%Critical

Interactive

HTTPS

WAF

27d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

27.02.2025

Valid Until

15.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.nspcc.org.uknspcc.org.uk

SHA-256 Fingerprint

F3:30:60:F7:98:47:AC:7D:16:AD:C9:74:87:45:E8:D0:6A:68:E0:58...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🟣 Private(private)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9cef61de9e64d390-FRA

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (4)

mx02.hornetsecurity.com

mx03.hornetsecurity.com

mx01.hornetsecurity.com

mx04.hornetsecurity.com

Domain Information

nspcc.org.uk

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Typography & Readability

NSPCCHeadline + NSPCCSemiBold

61/100

Readability

/30

32/40

30px · LH 1.20

Hierarchy

/20

11/25

1.33x ratio

WCAG

/25

11/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

NSPCCHeadline

Sans40px

Body Font

NSPCCSemiBold

Sans30px

Contrast Ratio

Reading Comfort

~40 CPL

Needs attention

40px

30px

✅ Excellent readability: 30px body text is ideal for all devices.

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

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

⚠️ Cramped layout: 33 elements lack adequate spacing.

⚠️ Inconsistent alignment: Mix of left/center/right creates visual noise.

Buy on MyFonts

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

A/B Testing & Optimization

OptimizelyEnterprise

Experimentation and conversion optimization

Sponsored

Scripts & Styles

11 Resources

Scripts

Styles

Async

Defer

Top Script Sources

youtube.com(2)local(2)cdn-ukwest.onetrust.com(2)platform.twitter.com(1)googletagmanager.com(1)

Website Identity

Facebook X (Twitter)LinkedIn YouTube

Sponsored

Last analyzed: 16 Feb 2026 at 19:17

Historical Analysis & Change Tracking