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

arm.com

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

Export

arm.com

Mobile

Sponsored

Hosting Provider

ARM Ltd

IP Address

217.140.110.36

Server Location

🇺🇸 Austin, United States

ASN

AS28939

Organization

ARM Ltd

CDN

Akamai

WAF

Akamai

Nameservers

ns9.arm.com.ns10.arm.com.

Performance

Page Speed

4.9 MB

122 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Ghost

Progressive Web App

PWA ReadyWeb ManifestService WorkerApple Touch IconTheme Color

Technology Stack

12 Technologies Detected

Analytics

Advertising

Twitter Ads Microsoft Advertising

Libraries

CSS Frameworks

Icon Libraries

Fonts

Comments

Customer Support

SEO Analysis

A88/100

arm.comarm.com

Powering the Future of AI Compute – Arm®

From cloud to edge, Arm provides the compute platforms behind today’s most advanced AI, trusted by innovators worldwide.

Title Length40 chars

Recommended: 50-60 chars

Description Length120 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

9 URLs

robots.txt

62 rules

Sitemap reference found

Sponsored

Security Score

81%Very Good

Interactive

HTTPS

WAF

257d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

26.09.2025

Valid Until

28.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (12)

www.arm.com*.api.arm.com*.account.arm.com*.developer.arm.com*.documentation-service.arm.com*.support.arm.com*.uxn-service.arm.com*.designsystem.arm.com+4 more

SHA-256 Fingerprint

28:4B:74:62:DB:85:2F:D3:B9:FA:36:8C:D5:58:4D:07:D3:3C:6A:DD...

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=93600

cache-control

🔴 No Cache(no-cache, no-store)

content-encoding

⚡ Brotli(br)

content-security-policy

frame-ancestors 'self' https://www.arm.com assets.adobedtm.c...

content-type

text/html; charset=utf-8

date

Fri, 13 Feb 2026 07:08:36 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

arm-com.mail.protection.outlook.com

Domain Information

arm.com

Domain Age

31 years

Created

07.02.1995

Expires

08.02.2027

Last Updated

03.02.2026

Registrar

Nom-iq Ltd. dba COM LAUDE

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

aeonik + sans-serif

76/100

Readability

/30

40/40

20px · LH 1.40

Hierarchy

/20

18/25

4.8x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

aeonik

Sans96px

Body Font

sans-serif

Sans20px

Contrast Ratio

Reading Comfort

~36 CPL

Needs attention

96px

32px

24px

20px

✅ Excellent readability: 20px body text is ideal for all devices.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 4.8x larger than body text.

✅ 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.

Buy on MyFonts

Business & Marketing Stack

11 Tools Detected

Enterprise

Marketing Automation

MarketoEnterprise

Email marketing and automation platforms

Behavior Analytics

HotjarMid-Market

Lucky OrangeSMB

Google AnalyticsFree

User behavior and product analytics

Lead Generation

ClearbitEnterprise

Popups, forms, and lead capture tools

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

Microsoft AdsEnterprise

LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

arm.com(5)assets.adobedtm.com(2)youtube.com(1)static.cloud.coveo.com(1)pixel.byspotify.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube

Sponsored

Last analyzed: 13 Feb 2026 at 07:09

Historical Analysis & Change Tracking