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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kddi.com

https://kddi.com· First analyzed 15 Feb 2026· Updated 15 Feb 2026

Export

kddi.com

Mobile

Sponsored

Hosting Provider

KDDI

IP Address

175.129.0.103

Server Location

🇯🇵 Shinjuku, Japan

ASN

AS2516

Organization

KDDI

Server

Apache

Nameservers

dnsa01.kddi.ne.jp.dnsa02.kddi.ne.jp.dns103.kddi.ne.jp.dns104.kddi.ne.jp.

Performance

Page Speed

4.7 MB

113 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Blogger

Technology Stack

14 Technologies Detected

Libraries

jQueryv3.5.1

Lodash Underscore.js

UI Components

Swiper Slick Carousel

Analytics

Google Analytics

Google Analytics 4

Advertising

Google Ads Snapchat Pixel

Other

CSS Frameworks

Fonts

Tag Managers

Web Servers

SEO Analysis

D52/100

kddi.comkddi.com

KDDI株式会社――Tomorrow, Together

KDDIの公式企業サイトです。KDDIの企業情報、ブランド、個人向け事業、法人向け事業、サステナビリティ、投資家情報、採用情報などをご紹介します。

Title Length28 chars

Recommended: 50-60 chars

Description Length73 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

6 issues found

Upgrade to view details

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

261d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

03.10.2025

Valid Until

04.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.kddi.comkddi.com

SHA-256 Fingerprint

E4:3C:0D:C5:97:7A:95:50:03:90:8E:C1:EC:B3:D6:AB:3C:27:01:4D...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

connection

Keep-Alive

content-type

text/html; charset=UTF-8

date

Sun, 15 Feb 2026 08:22:12 GMT

keep-alive

timeout=5, max=100

server

Apache

transfer-encoding

chunked

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

post-gate-kddi.in.tmems-jp.trendmicro.com

Domain Information

kddi.com

Domain Age

26y 5m

Created

17.09.1999

Expires

17.09.2026

Last Updated

20.11.2025

Registrar

PSI-Japan, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Helvetica Neue

51/100

Readability

/30

20/40

12px · LH 1.75

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Helvetica Neue

Sans

Body Font

Helvetica Neue

Sans12px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

16px

14px

12px

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

✅ Optimal line spacing: 1.75 ratio ensures comfortable reading.

✅ Good performance: Using 2 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.

✅ Protected text on images: Using gradient for readability.

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

26 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(8)googletagmanager.com(7)youtube.com(2)google-analytics.com(1)s.yimg.jp(1)

Website Identity

Facebook X (Twitter)YouTube

Sponsored

Last analyzed: 15 Feb 2026 at 08:23

Historical Analysis & Change Tracking