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

jvc.com

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

Export

jvc.com

Sponsored

Hosting Provider

Internet Initiative Japan Inc.

IP Address

150.31.252.183

Server Location

🇯🇵 Tokyo, Japan

ASN

AS2497

Organization

Internet Initiative Japan Inc.

Nameservers

ns2.us.jvckenwood.com.ns1.us.jvckenwood.com.

Performance

Page Speed

1.4 MB

88 requests

Image Optimization

WebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Internet Initiative Japan Inc.

Technology Stack

9 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Segment

CSS Frameworks

Libraries

UI Components

Tag Managers

SEO Analysis

D52/100

jvc.comjvc.com

Homepage for JVC consumer products • JVC Europe

JVC Headphones, car stereo, home audio, camcorders take your excitement everywhere · Home cinema projectors.... -

Title Length47 chars

Recommended: 50-60 chars

Description Length114 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

3 rules

Sitemap reference found

Sponsored

Security Score

56%Poor

Interactive

HTTPS

No WAF

94d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

25.04.2025

Valid Until

25.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.jvc.comjvc.com

SHA-256 Fingerprint

96:BF:05:6E:69:05:BE:97:AE:FB:39:AC:F3:8C:B5:80:65:22:1F:D8...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟣 Private(private)

content-encoding

📦 Gzip(gzip)

content-length

9814

content-type

text/html; charset=utf-8

date

Fri, 20 Feb 2026 00:03:27 GMT

strict-transport-security

max-age=31536000; includeSubDomains; preload

Good Warning Issue

Email Infrastructure

Mimecast

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

us-smtp-inbound-2.mimecast.com

us-smtp-inbound-1.mimecast.com

Domain Information

jvc.com

Domain Age

36y 5m

Created

15.09.1989

Expires

14.09.2029

Last Updated

09.03.2022

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

FrutigerNextW01-Regular

59/100

Readability

/30

20/40

13px · LH 1.40

Hierarchy

/20

18/25

2.15x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

FrutigerNextW01-Regular

Sans28px

Body Font

FrutigerNextW01-Regular

Sans13px

Contrast Ratio

Reading Comfort

~78 CPL

Optimal (45–75)

28px

46px

20px

13px

Minor Second

Scale

❌ Critical: 13px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.1x 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.

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

asset.novena.hr(6)googletagmanager.com(3)connect.facebook.net(2)google-analytics.com(2)fast.fonts.net(2)

Sponsored

Last analyzed: 20 Feb 2026 at 00:03

Historical Analysis & Change Tracking