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

sina.com.cn

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

Export

sina.com.cn

Mobile

Sponsored

Hosting Provider

15F, Ideal Plaza No.58 Bei Si Huan Xi Road

IP Address

36.51.254.91

Server Location

🇨🇳 Chengbei, China

ASN

AS37936

Server

Tengine

CDN

Nameservers

ns3.sina.com.cn.ns1.sina.com.cn.ns2.sina.com.cn.ns4.sina.com.cn.

Performance

Page Speed

222 KB

227 requests

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

15F, Ideal Plaza No.58 Bei Si Huan Xi Road

CDN

Detected API Sources

https://www.sina.com.cn/api/si...

Technology Stack

5 Technologies Detected

Meta Frameworks

Libraries

CSS Frameworks

Web Servers

Customer Support

SEO Analysis

F23/100

sina.com.cnsina.com.cn

新浪网

新浪网为全球用户24小时提供全面及时的中文资讯，内容覆盖国内外突发新闻事件、体坛赛事、娱乐时尚、产业资讯、实用信息等，设有新闻、体育、娱乐、财经、科技、房产、汽车等30多个内容频道，同时开设博客、视频、论坛等自由互动交流空间。

Title Length3 chars

Recommended: 50-60 chars

Description Length113 chars

Recommended: 120-160 chars

Issues (3)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (64/99)
• Missing viewport meta tag - page may not be mobile-friendly

9 issues found

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

339d

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

age

ali-swift-global-savetime

1770755860

cache-control

🟡 60s(max-age=60)

content-encoding

📦 Gzip(gzip)

content-length

117798

content-type

text/html

Good Warning Issue

Typography & Readability

SimSun + Microsoft YaHei

38/100

Readability

/30

32/40

14px · LH 1.43

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

SimSun

Sans

Body Font

Microsoft YaHei

Sans14px

Contrast Ratio

Reading Comfort

~119 CPL

Needs attention

14px

12px

14px

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

✅ Optimal line spacing: 1.43 ratio ensures comfortable reading.

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

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

⚠️ Wide lines: ~119 chars/line. Consider max-width for better reading flow.

⚠️ Cramped layout: 105 elements lack adequate spacing.

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Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

d3.sina.com.cn(4)n.sinaimg.cn(3)sina.com.cn(3)news.sina.com.cn(3)sinaimg.cn(1)

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Last analyzed: 10 Feb 2026 at 20:38

Historical Analysis & Change Tracking