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.

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chunichi.co.jp

https://chunichi.co.jp· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

chunichi.co.jp

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

18.179.126.146

Server Location

🇯🇵 Tokyo, Japan

ASN

AS16509

Organization

AWS EC2 (ap-northeast-1)

Server

Apache

Nameservers

ns-31.awsdns-03.com.ns-958.awsdns-55.net.ns-1119.awsdns-11.org.ns-1553.awsdns-02.co.uk.

Performance

Page Speed

544 KB

250 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

HubSpot CMS

Progressive Web App

Service WorkerApple Touch Icon

Technology Stack

18 Technologies Detected

Advertising

Google Ads Microsoft Advertising Criteo Outbrain

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel

Icon Libraries

Font Awesome Material Icons

Libraries

UI Components

Other

CSS Frameworks

Fonts

Tag Managers

Marketing

Payments

Web Servers

SEO Analysis

C68/100

chunichi.co.jpchunichi.co.jp

東海・中部地方のニュースなら「中日新聞Web」

中日新聞の総合ニュースサイト。東海地方・中部地方のニュースと生活情報を中心に、様々な地域情報を提供します。

Title Length23 chars

Recommended: 50-60 chars

Description Length53 chars

Recommended: 120-160 chars

Issues (0)

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

4 URLs

robots.txt

137 rules

Sitemap reference found

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

50d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Cybertrust Japan Co., Ltd.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

17.03.2025

Valid Until

11.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.chunichi.co.jpchunichi.co.jp

SHA-256 Fingerprint

10:10:DB:98:A3:CE:82:FB:B9:EC:C9:15:DB:1B:0F:A4:0A:34:98:82...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache, must-revalidate, post-check=0, pre-check=0, max-ag...)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Thu, 19 Feb 2026 15:14:06 GMT

expires

Thu, 19 Feb 2026 16:14:06 GMT

pragma

no-cache

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

alt1.aspmx.l.google.com

aspmx.l.google.com

alt3.aspmx.l.google.com

alt4.aspmx.l.google.com

+1 more

Domain Information

chunichi.co.jp

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Legitimate interest basis mentioned

Typography & Readability

Hiragino Kaku Gothic Pro

68/100

Readability

/30

30/40

16px · LH --

Hierarchy

/20

15/25

1.25x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Hiragino Kaku Gothic Pro

Sans20px

Body Font

Hiragino Kaku Gothic Pro

Sans16px

Contrast Ratio

Reading Comfort

~45 CPL

Needs attention

20px

16px

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

⚠️ 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.

⚠️ Cramped layout: 127 elements lack adequate spacing.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

8 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Matomo (Piwik)Mid-Market

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

CookiebotMid-Market

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

28 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)dmp.im-apps.net(2)connect.facebook.net(2)penta.a.one.impact-ad.jp(1)script.4dex.io(1)

Website Identity

chunichi.co.jp

📧 Google Workspace

Social Profiles

X (Twitter)YouTube

Sponsored

Last analyzed: 19 Feb 2026 at 15:14

Historical Analysis & Change Tracking