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

oxforddictionaries.com

https://oxforddictionaries.com· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

13.248.160.137

Server Location

🇨🇦 Montreal, Canada

ASN

AS16509

Organization

AWS Global Accelerator (GLOBAL)

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns-1520.awsdns-62.org.ns-1638.awsdns-12.co.uk.ns-504.awsdns-63.com.ns-677.awsdns-20.net.

Performance

Page Speed

2.7 MB

196 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

React

CMS

WordPressv6.8.3

Infrastructure

Hosting

Amazon Web Services (AWS)

CDN

Cloudflare

Technology Stack

31 Technologies Detected

Plugins

Easy Social Icons So Widgets Bundle

Contact Form 7

Responsive Accordion And Collapse Siteorigin Panels Hide Admin Bar Based On User Roles

TablePress

Ninja Forms Salesforce Crm

Ninja Forms Stripe

Essential Blocks Cf7 Antispam Megamenu

Yoast SEO

Libraries

jQueryv3.7.1

jQuery UI

Underscore.js Moment.js

CSS Frameworks

Analytics

Frameworks

UI Components

Other

Icon Libraries

Fonts

Tag Managers

CDN

Security

Customer Support

SEO Analysis

A82/100

oxforddictionaries.comoxforddictionaries.com

Oxford Languages | The Home of Language Data

Explore Oxford Languages, the home of world-renowned language data.

Title Length44 chars

Recommended: 50-60 chars

Description Length67 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

36 rules

Sitemap reference found

Sponsored

A+

Security Score

91%Excellent

Interactive

HTTPS

WAF

34d

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+H3

Valid From

20.12.2025

Valid Until

20.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

languages.oup.com

SHA-256 Fingerprint

40:B3:6B:81:7D:F9:A5:FB:BB:1C:12:9E:FD:3C:C2:4D:35:DD:B2:63...

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🟡 600s(max-age=600, must-revalidate)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9cd56d827e753a43-FRA

content-encoding

⚡ Brotli(br)

content-security-policy

base-uri 'self' languages.oup.com prododcorp.wpengine.com st...

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

oup-com.mail.protection.outlook.com

Domain Information

oxforddictionaries.com

Domain Age

25y 6m

Created

31.07.2000

Expires

31.07.2026

Last Updated

27.07.2025

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

Open Sans

73/100

Readability

/30

32/40

14px · LH 1.40

Hierarchy

/20

15/25

1.29x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Open Sans

Sans18px

Body Font

Open Sans

Sans14px

Contrast Ratio

Reading Comfort

~32 CPL

Needs attention

18px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.40 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.

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

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

languages.oup.com(14)googletagmanager.com(2)cdn-ukwest.onetrust.com(2)gstatic.com(1)google-analytics.com(1)

Website Identity

oxforddictionaries.com

25 years old

CSC Corporate Domains, Inc.📧 Microsoft 365

Social Profiles

Facebook X (Twitter)

Sponsored

Last analyzed: 13 Feb 2026 at 15:41

Historical Analysis & Change Tracking