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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pixiv.net

https://pixiv.net· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

pixiv.net

Mobile

Sponsored

Hosting Provider

IDCFNet

IP Address

210.140.139.152

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS4694

Organization

IDCFNet

Server

Apple

Nameservers

ns1.pixiv.net.ns2.pixiv.net.

Performance

Page Speed

1 KB

17 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

IDCFNet

Technology Stack

2 Technologies Detected

Libraries

jQuery

CSS Frameworks

Tailwind CSS

SEO Analysis

D41/100

pixiv.netpixiv.net

Sign in to Apple Account

No description available for this page.

Title Length24 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description - important for click-through rates
• Many images missing alt text (1/1)

8 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

38 rules

Sponsored

Security Score

65%Fair

Critical / Transactional

HTTPS

No WAF

56d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Apple Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

12.05.2025

Valid Until

10.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (3)

account.apple.comaccounts.apple.comappleid.apple.com

SHA-256 Fingerprint

49:8F:CE:39:28:67:0A:40:7C:E3:82:E9:C8:FC:D3:85:DB:70:7B:FB...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-language

en-GB-x-lvariant-GBR

content-security-policy

default-src 'self' ; child-src blob: ; connect-src 'self' ht...

content-type

text/html;charset=UTF-8

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

alt2.aspmx.l.google.com

aspmx.l.google.com

alt3.aspmx.l.google.com

alt4.aspmx.l.google.com

+1 more

Domain Information

pixiv.net

Domain Age

18y 7m

Created

16.07.2007

Expires

16.07.2026

Last Updated

30.11.2025

Registrar

Key-Systems GmbH

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Typography & Readability

Helvetica Neue

45/100

Readability

/30

12/40

12px · LH 1.33

Hierarchy

/20

8/25

1.42x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Helvetica Neue

Sans17px

Body Font

Helvetica Neue

Sans12px

Contrast Ratio

Reading Comfort

~49 CPL

Optimal (45–75)

17px

12px

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

⚠️ 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.

✅ Optimal line length: ~49 characters per line is comfortable to read.

✅ Clean layout: Consistent center alignment throughout.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

13 Resources

Scripts

Styles

Async

Defer

Top Script Sources

appleid.cdn-apple.com(6)apple.com(1)

Sponsored

Last analyzed: 12 Feb 2026 at 23:27

Historical Analysis & Change Tracking