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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photozou.jp

https://photozou.jp· First analyzed 19 Feb 2026· Updated 19 Feb 2026

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photozou.jp

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Hosting Provider

SAKURA Internet Inc.

IP Address

160.16.122.20

Server Location

🇯🇵 Tokyo, Japan

ASN

AS9370

Organization

SAKURA Internet Inc.

Server

Nginx

Nameservers

ns.photozou.jp.ns1.photozou.jp.

Performance

Page Speed

1.1 MB

159 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

SAKURA Internet Inc.

Technology Stack

17 Technologies Detected

Advertising

Google Ads Google AdSense Criteo Outbrain

Analytics

Libraries

Other

UI Components

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

Payments

Web Servers

Languages

SEO Analysis

B70/100

photozou.jpphotozou.jp

Photo sharing "PhotoZou"

Photozou is a photo album a free service that can post and share your photos easily. You can either ask everyone to look the photos taken with a digital came...

Description truncated.

Title Length24 chars

Recommended: 50-60 chars

Description Length240 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

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Crawlability

Sitemap

Type: index

263 URLs

robots.txt

43 rules

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

275d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

22.10.2025

Valid Until

21.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.photozou.jpphotozou.jp

SHA-256 Fingerprint

B4:94:BE:1D:B6:BD:87:42:DE:1A:A0:5D:0C:D7:FC:FA:DC:1A:20:B0...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

keep-alive

content-type

text/html; charset=UTF-8

date

Thu, 19 Feb 2026 20:20:40 GMT

server

nginx

transfer-encoding

chunked

x-powered-by

PHP/5.4.16

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

mx.photozou.jp

Domain Information

photozou.jp

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

Legitimate interest basis mentioned

Typography & Readability

Verdana

34/100

Readability

/30

5/40

13px · LH 1.00

Hierarchy

/20

8/25

1x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Verdana

Sans13px

Body Font

Verdana

Sans13px

Contrast Ratio

Reading Comfort

~68 CPL

Optimal (45–75)

13px

17px

13px

Minor Second

Scale

❌ Critical: 13px 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 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.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(12)googletagmanager.com(2)scripts.clarity.ms(1)pagead2.googlesyndication.com(1)ssl.microsofttranslator.com(1)

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Last analyzed: 19 Feb 2026 at 20:21

Historical Analysis & Change Tracking