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

cadence.com

https://cadence.com· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

cadence.com

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

35.167.1.114

Server Location

🇺🇸 Portland, United States

ASN

AS16509

Organization

AWS EC2 (us-west-2)

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns02.cadence.com.ns03.cadence.com.ns01.cadence.com.

Performance

Page Speed

2.6 MB

69 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Adobe Experience Manager

Technology Stack

5 Technologies Detected

Libraries

CSS Frameworks

Icon Libraries

CDN

SEO Analysis

B72/100

cadence.comcadence.com

Cadence | Computational Software for Intelligent System Design | Ca...

Cadence is a leading EDA and Intelligent System Design provider delivering hardware, software, and IP for electronic design.

Title truncated.

Title Length72 chars

Recommended: 50-60 chars

Description Length126 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (39/46)

3 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

91 rules

Sitemap reference found

Sponsored

Security Score

71%Good

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

04.01.2026

Valid Until

04.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

cadence.com*.cadence.com

SHA-256 Fingerprint

86:1F:46:F4:C4:39:6F:8A:02:82:B8:A6:E9:58:A4:42:C3:84:95:5A...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

age

1094

cache-control

🟡 2 Hours(public, max-age=7200)

cf-cache-status

HIT

cf-ray🇩🇪 Frankfurt

9cf9e033c8fa65c6-FRA

content-encoding

⚡ Brotli(br)

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mxb-0014ca01.gslb.pphosted.com

mxa-0014ca01.gslb.pphosted.com

Domain Information

cadence.com

Domain Age

36y 10m

Created

14.04.1989

Expires

15.04.2026

Last Updated

27.11.2025

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Typography & Readability

Rubik-Light + Rubik-Medium

70/100

Readability

/30

32/40

14px · LH 1.60

Hierarchy

/20

18/25

3.38x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

Rubik-Light

Sans49px

Body Font

Rubik-Medium

Sans14px

Contrast Ratio

Reading Comfort

~34 CPL

Needs attention

49px

24px

29px

15px

14px

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

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.4x larger than body text.

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

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 15 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Enterprise

Marketing Automation

MarketoEnterprise

Email marketing and automation platforms

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(8)assets.adobedtm.com(4)youtube.com(2)cdn.cookielaw.org(1)

Website Identity

cadence.com

36 years old

CSC Corporate Domains, Inc.

Social Profiles

Facebook X (Twitter)LinkedIn YouTube

Sponsored

Last analyzed: 18 Feb 2026 at 01:51

Historical Analysis & Change Tracking