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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b.hatena.ne.jp

https://b.hatena.ne.jp· First analyzed 11 Feb 2026· Updated 11 Feb 2026

Export

b.hatena.ne.jp

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

18.165.122.92

Server Location

🇮🇪 Dublin, Ireland

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Server

Nginx

CDN

CloudFront

Nameservers

ns-745.awsdns-29.net.ns-1269.awsdns-30.org.ns-1803.awsdns-33.co.uk.ns-342.awsdns-42.com.

Performance

Page Speed

3 KB

243 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Contentful

Technology Stack

11 Technologies Detected

Analytics

Frameworks

Advertising

Google Ads Twitter Ads

CSS Frameworks

Tag Managers

Customer Support

Web Servers

SEO Analysis

D52/100

b.hatena.ne.jpb.hatena.ne.jp

はてなブックマーク

はてなブックマークはオンラインにブックマークを無料で保存できるソーシャルブックマークサービスです。みんながブックマークしたインターネット上の旬なニュースや情報が集まります。

Title Length9 chars

Recommended: 50-60 chars

Description Length86 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (157/161)

6 issues found

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Sponsored

Security Score

36%Critical

Interactive

HTTPS

No WAF

191d

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

https://b.hatena.ne.jp

age

355

cache-control

🟡 420s(public, max-age=420, s-maxage=420, stale-if-error=21600)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Wed, 11 Feb 2026 06:18:26 GMT

Good Warning Issue

Typography & Readability

Helvetica

41/100

Readability

/30

20/40

11px · LH 1.50

Hierarchy

/20

18/25

3.05x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Helvetica

Sans32px

Body Font

Helvetica

Sans11px

Contrast Ratio

Reading Comfort

~34 CPL

Needs attention

32px

17px

18px

12px

11px

❌ Critical: 10px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.0x 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.

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

Buy on MyFonts

Business & Marketing Stack

6 Tools Detected

Enterprise

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

Matomo (Piwik)Mid-Market

User behavior and product analytics

Advertising

Twitter/X AdsMid-Market

Ad platforms and retargeting pixels

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)dmp.im-apps.net(3)b.st-hatena.com(2)sync.im-apps.net(1)scripts.clarity.ms(1)

Website Identity

b.hatena.ne.jp

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Last analyzed: 11 Feb 2026 at 06:24

Historical Analysis & Change Tracking