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.cn

https://sina.cn· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

sina.cn

Mobile

Sponsored

Hosting Provider

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

IP Address

36.51.254.90

Server Location

🇨🇳 Chengbei, China

ASN

AS37936

Server

Nginx

Nameservers

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

Performance

Page Speed

36 KB

37 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

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

Technology Stack

2 Technologies Detected

Web Servers

Nginx

Languages

PHPv7.0.15

SEO Analysis

F32/100

sina.cnsina.cn

手机新浪网

手机新浪网是新浪网的手机门户网站，为亿万用户打造一个手机联通世界的超级平台，提供24小时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。手机新浪网触屏版 - sina.cn

Title Length5 chars

Recommended: 50-60 chars

Description Length107 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (3/5)

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

41%Poor

Interactive

HTTPS

No WAF

321d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert, Inc.

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

02.12.2025

Valid Until

30.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

sina.comm.beacon.sina.com.cnimg.star.weibo.comwk.impress.sinaimg.cnwww.sina.comcre.dp.sina.cni.sso.sina.com.cnimg.dmp.sina.com.cn+12 more

SHA-256 Fingerprint

0F:1C:91:E8:8D:DC:D0:4F:D3:F0:57:23:54:9A:ED:24:B1:A8:EC:1F...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Thu, 12 Feb 2026 23:44:18 GMT

server

nginx

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (3)

freemx1.sinamail.sina.com.cn

freemx3.sinamail.sina.com.cn

freemx2.sinamail.sina.com.cn

Domain Information

sina.cn

DNSSEC

Not Enabled

Typography & Readability

Times New Roman

46/100

Readability

/30

30/40

62px · LH --

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Times New Roman

Serif

Body Font

Times New Roman

Serif62px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

93px

62px

✅ Excellent readability: 62px body text is ideal for all devices.

✅ 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.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

mjs.sinaimg.cn(7)pluto.sina.cn(1)n.sinaimg.cn(1)

Sponsored

Last analyzed: 12 Feb 2026 at 23:46

Historical Analysis & Change Tracking