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

onenote.com

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

Export

onenote.com

Sponsored

Hosting Provider

Akamai Technologies, Inc.

IP Address

184.30.158.156

Server Location

🇳🇱 Haarlem, Netherlands

ASN

AS16625

Organization

Akamai Technologies, Inc.

CDN

Nameservers

usc4.akam.net.usw1.akam.net.ns1-132.akam.net.eur2.akam.net.+4 more

Performance

Page Speed

Image Optimization

WebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

React

Infrastructure

Hosting

Akamai Technologies, Inc.

CDN

Technology Stack

3 Technologies Detected

Frameworks

React

CSS Frameworks

Tailwind CSS

Analytics

Google Analytics 4

SEO Analysis

D55/100

onenote.comonenote.com

OneNote

No description available for this page.

Title Length7 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description - important for click-through rates
• Missing H1 tag - every page should have one H1

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

robots.txt

34 rules

Sitemap reference found

Sponsored

Security Score

81%Very Good

Static / Informational

HTTPS

No WAF

119d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Microsoft Corporation

Key Algorithm

RSA (2048 bit)

Signature

SHA-384 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

24.06.2025

Valid Until

19.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

officeapps.live.comofficeppe.live.com*.office.live.comoffice.live.com*.officeapps.live.comofficeapps-df.live.com*.officeapps-df.live.com*.online.office.com+12 more

SHA-256 Fingerprint

54:66:E4:BE:EB:40:95:B8:D2:6D:A4:2A:E9:F4:B6:DD:47:51:3C:65...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

access-control-expose-headers

date,Akamai-Request-BC,X-Cdn-Provider,X-Ms-Request-Id

ak-network

akamai-cache-status

Hit from child

akamai-request-bc

[a=2.19.253.150,b=3475310545,c=g,n=GB_EN_SLOUGH,o=20940]

cache-control

🟡 300s(max-age=300)

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

onenote-com.mail.protection.outlook.com

Domain Information

onenote.com

Domain Age

23y 10m

Created

06.04.2002

Expires

06.04.2026

Last Updated

02.04.2025

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Typography & Readability

Segoe UI Web (West European)

73/100

Readability

/30

32/40

16px · LH 1.38

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Segoe UI Web (West European)

Sans

Body Font

Segoe UI Web (West European)

Sans16px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

32px

16px

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

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

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

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

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

res.cdn.office.net(20)

Sponsored

Last analyzed: 20 Feb 2026 at 01:22

Historical Analysis & Change Tracking