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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yunzhan365.com

https://yunzhan365.com· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

yunzhan365.com

Sponsored

Hosting Provider

Alibaba Cloud

alibabacloud.com

IP Address

163.181.254.193

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS24429

Organization

Alibaba.com LLC

Server

Tengine

CDN

Performance

Page Speed

1.9 MB

73 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

Technology Stack

5 Technologies Detected

Libraries

jQueryv3.5.1

CSS Frameworks

Tailwind CSS

Analytics

Microsoft Clarity

Advertising

Microsoft Advertising

Web Servers

Tengine

SEO Analysis

B76/100

yunzhan365.comyunzhan365.com

云展网-电子画册，企业宣传册，期刊杂志制作发布平台，微信可读

百万用户在云展网制作发布电子画册，企业宣传册，企业画册，期刊杂志。一键上传PDF即转为逼真的3D翻页画册，生成链接/二维码，微信扫码即可分享。

Title Length30 chars

Recommended: 50-60 chars

Description Length71 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

5 rules

Sitemap reference found

Sponsored

Security Score

36%Critical

Interactive

HTTPS

No WAF

171d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

16.07.2025

Valid Until

09.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.yunzhan365.comyunzhan365.com

SHA-256 Fingerprint

3A:4A:BF:49:8D:92:04:56:CE:C7:A5:E2:3A:BA:DD:8A:93:AA:A8:96...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-headers

token,HTTP_TOKEN

ali-swift-global-savetime

1771539028

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Thu, 19 Feb 2026 22:10:28 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

yunzhan365.com

Domain Age

11 years

Created

14.02.2015

Expires

14.02.2031

Last Updated

30.10.2025

Registrar

Alibaba Cloud Computing Ltd. d/b/a HiChina (www.net.cn)

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Open Sans

74/100

Readability

/30

32/40

14px · LH 1.43

Hierarchy

/20

21/25

2.57x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Open Sans

Sans36px

Body Font

Open Sans

Sans14px

Contrast Ratio

Reading Comfort

~49 CPL

Optimal (45–75)

36px

30px

20px

16px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.43 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.6x larger than body text.

✅ Good performance: Using 2 font families keeps load times fast.

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

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Microsoft ClarityFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

18 Resources

Scripts

Styles

Async

Defer

Top Script Sources

static.yunzhan365.com(5)bat.bing.com(2)local(2)scripts.clarity.ms(1)clarity.ms(1)

Website Identity

X (Twitter)

Sponsored

Last analyzed: 19 Feb 2026 at 22:11

Historical Analysis & Change Tracking