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

blog.jp

https://blog.jp· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

blog.jp

Mobile

Sponsored

Hosting Provider

LINE Corporation

IP Address

147.92.146.242

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS38631

Organization

LINE Corporation

Server

Nginx

Nameservers

ns-815.awsdns-37.net.ns-1490.awsdns-58.org.ns-2044.awsdns-63.co.uk.ns-292.awsdns-36.com.

Performance

Page Speed

23 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

LINE Corporation

Technology Stack

1 Technologies Detected

Web Servers

Nginx

SEO Analysis

D41/100

blog.jpblog.jp

はじめてガイド - ライブドアブログ

ライブドアブログは完全無料で豊富な機能をご利用いただけるブログ作成サービスです。デザインカスタマイズはもちろん、アクセス解析、各SNSとの連携、プライベート機能、独自ドメインなど、充実した機能と使いやすさでみなさまのブログライフを応援します。

Title Length18 chars

Recommended: 50-60 chars

Description Length121 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (15/19)

6 issues found

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Security Score

21%Critical

Interactive

HTTPS

No WAF

65d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

21.01.2026

Valid Until

21.04.2026

Subject Alternative Names (2)

*.blog.jpblog.jp

SHA-256 Fingerprint

8A:93:DB:6F:31:4A:17:B4:DE:32:19:30:D4:CE:30:30:11:4F:76:7C...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-length

3766

content-type

text/html

date

Sat, 14 Feb 2026 13:05:07 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

blog.jp

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

游ゴシック体 + Verdana

38/100

Readability

/30

5/40

12px · LH 1.00

Hierarchy

/20

8/25

1.33x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

游ゴシック体

Sans16px

Body Font

Verdana

Sans12px

Contrast Ratio

Reading Comfort

Dual Sans-Serif

left aligned

16px

14px

12px

❌ Critical: 12px body text is too small. Increase to at least 14px.

⚠️ Tight line spacing (1.00). Consider 1.4-1.6 for better readability.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

✅ Good performance: Using 2 font families keeps load times fast.

✅ Clean layout: Consistent left alignment throughout.

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Scripts & Styles

3 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.sx.adingo.jp(1)pdn.adingo.jp(1)

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Last analyzed: 14 Feb 2026 at 13:05

Historical Analysis & Change Tracking