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

shueisha.co.jp

https://shueisha.co.jp· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

shueisha.co.jp

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

75.2.121.60

Server Location

🇺🇸 Seattle, United States

ASN

AS16509

Organization

AWS Global Accelerator (GLOBAL)

Server

Accelia

CDN

CloudFront

Nameservers

ns1.hitotsubashi.org.ns3.hitotsubashi.org.ns2.hitotsubashi.org.

Performance

Page Speed

7.6 MB

197 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.7

cms

集英社

Technology Stack

10 Technologies Detected

Libraries

Analytics

UI Components

Other

AOS (Animate On Scroll)

CSS Frameworks

Fonts

Tag Managers

Plugins

SEO Analysis

C62/100

shueisha.co.jpshueisha.co.jp

集英社　―　SHUEISHA　―

集英社公式サイト総合トップページ。集英社の雑誌、書籍、コミックなど全ての出版物に関する情報や各サイトへアクセスできます。

Title Length16 chars

Recommended: 50-60 chars

Description Length60 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

7 URLs

robots.txt

4 rules

Sitemap reference found

Sponsored

Security Score

41%Poor

Interactive

HTTPS

No WAF

111d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Cybertrust Japan Co., Ltd.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

09.05.2025

Valid Until

08.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.shueisha.co.jpshueisha.co.jp

SHA-256 Fingerprint

3D:BC:41:92:15:9F:28:4C:73:E4:42:A2:EA:2F:81:DE:10:13:8E:06...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Tue, 17 Feb 2026 04:58:10 GMT

link

<https://www.shueisha.co.jp/wp-json/>; rel="https://api.w.or...

server

Accelia

via

1.1 65be7de1eb706a63642aebbd553eb59c.cloudfront.net (CloudFr...

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

shueisha-co-jp.mail.protection.outlook.com

Domain Information

shueisha.co.jp

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Noto Sans JP + sans-serif

54/100

Readability

/30

40/40

18px · LH 1.40

Hierarchy

/20

11/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Noto Sans JP

Sans0

Body Font

sans-serif

Sans18px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

16px

14px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

✅ 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.

⚠️ Risky: Text appears on background images without overlay protection.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

shueisha.co.jp(7)googletagmanager.com(3)cs.nakanohito.jp(1)google-analytics.com(1)local(1)

Website Identity

shueisha.co.jp

📧 Microsoft 365

Sponsored

Last analyzed: 17 Feb 2026 at 04:58

Historical Analysis & Change Tracking

shueisha.co.jp

集英社 ― SHUEISHA ―

shueisha.co.jp

集英社　―　SHUEISHA　―