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

163.com

https://163.com· First analyzed 10 Feb 2026· Updated 10 Feb 2026

Export

163.com

Mobile

Sponsored

Hosting Provider

Guangzhou NetEase Computer System Co., Ltd

IP Address

59.111.160.244

Server Location

🇨🇳 Guangzhou, China

ASN

AS45062

Organization

Guangzhou NetEase Computer System Co., Ltd

Server

Tengine

CDN

Nameservers

ns2.166.com.ns8.166.com.ns1.nease.net.ns6.nease.net.+3 more

Performance

Page Speed

1.9 MB

124 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Guangzhou NetEase Computer System Co., Ltd

CDN

Technology Stack

3 Technologies Detected

Libraries

jQuery

CSS Frameworks

Tailwind CSS

Web Servers

Tengine

SEO Analysis

D44/100

163.com163.com

网易

No description available for this page.

Title Length2 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description - important for click-through rates

7 issues found

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Security Score

21%Critical

Interactive

HTTPS

No WAF

80d

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

age

ali-swift-global-savetime

1770757319

cache-control

🔴 No Cache(no-cache,no-store,private)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-length

53801

Good Warning Issue

Typography & Readability

Microsoft Yahei

48/100

Readability

/30

40/40

18px · LH 1.67

Hierarchy

/20

15/25

0.67x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Microsoft Yahei

Sans12px

Body Font

Microsoft Yahei

Sans18px

Contrast Ratio

Reading Comfort

~182 CPL

Needs attention

12px

18px

16px

18px

Minor Second

Scale

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Optimal line spacing: 1.67 ratio ensures comfortable reading.

⚠️ 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.

⚠️ Risky: Text appears on background images without overlay protection.

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Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

static.ws.126.net(9)pos.baidu.com(6)g.163.com(2)urswebzj.nosdn.127.net(1)yt-adp.ws.126.net(1)

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Last analyzed: 10 Feb 2026 at 21:03

Historical Analysis & Change Tracking