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

jrc.or.jp

https://jrc.or.jp· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

jrc.or.jp

Sponsored

Hosting Provider

Incapsula Inc

IP Address

45.64.66.69

Server Location

🇭🇰 Hong Kong, Hong Kong

ASN

AS19551

Organization

Incapsula Inc

Server

Apache

CDN

Nameservers

ns.jrc.or.jp.dns1.bbiq.jp.dns1.qtnet.ne.jp.dns2.qtnet.ne.jp.+1 more

Performance

Page Speed

5.7 MB

141 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Incapsula Inc

CDN

Technology Stack

8 Technologies Detected

Analytics

Advertising

CSS Frameworks

Tag Managers

Web Servers

SEO Analysis

D52/100

jrc.or.jpjrc.or.jp

日本赤十字社

日本赤十字社は、紛争・災害・病気などで苦しむ人を救うためあらゆる支援をしています。皆様の寄付・献血・ボランティアをお待ちしております。

Title Length6 chars

Recommended: 50-60 chars

Description Length67 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

18,578 URLs

robots.txt

Sponsored

Security Score

51%Poor

Interactive

HTTPS

WAF

115d

Certificate Details

Type

Extended Validation (EV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

12.05.2025

Valid Until

13.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.jrc.or.jpjrc.or.jp

SHA-256 Fingerprint

A2:E3:BF:E4:26:4A:FC:2A:EA:FB:7F:80:0E:57:33:CA:7E:FB:DF:20...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🟡 0s(max-age=0)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Tue, 17 Feb 2026 22:12:24 GMT

etag

"a9d17152"

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mxb-0027e501.gslb.pphosted.com

mxa-0027e501.gslb.pphosted.com

Domain Information

jrc.or.jp

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

YuGothic

61/100

Readability

/30

32/40

16px · LH 2.00

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

YuGothic

Sans

Body Font

YuGothic

Sans16px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

38px

24px

16px

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

✅ Good performance: Using 1 font families keeps load times fast.

✅ Consistent design: Single font family with weight variations is a modern best practice.

⚠️ Cramped layout: 61 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

Ad platforms and retargeting pixels

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(11)connect.facebook.net(4)cdn.cookie.sync.usonar.jp(1)apisonar.go.usonar.jp(1)cse.google.com(1)

Website Identity

jrc.or.jp

Social Profiles

Facebook X (Twitter)Instagram YouTube

Sponsored

Last analyzed: 17 Feb 2026 at 22:13

Historical Analysis & Change Tracking