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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caixin.com

https://caixin.com· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

caixin.com

Sponsored

Hosting Provider

Beijing capitalonline data service co., LTD

IP Address

106.3.129.147

Server Location

🇨🇳 Haidian, China

ASN

AS23724

Organization

Beijing capitalonline data service co., LTD

Server

Zen/4.3

Nameservers

ins1.zdnscloud.com.dns1.zdnscloud.info.cns1.zdnscloud.net.vns1.zdnscloud.biz.

Performance

Page Speed

322 KB

55 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Beijing capitalonline data service co., LTD

Detected API Sources

//tjs.sjs.sinajs.cn/open/api/j...

Technology Stack

2 Technologies Detected

Libraries

jQueryv1.7.2

Customer Support

Zendesk

SEO Analysis

F29/100

caixin.comcaixin.com

财新网

财新网（caixin.com）与财新《财新周刊》、财新《中国改革》、《比较》同属财新传媒。财新网定位于原创财经新媒体，整合资讯、观点、多媒体、互动等信息时代形态丰富的媒体产品，以客观、专业的视角，实时输出高品质原创内容，为中国政界、学界和产业界精英提供每日经济活动必需的财经新闻和资讯评论

Title Length3 chars

Recommended: 50-60 chars

Description Length144 chars

Recommended: 120-160 chars

Issues (3)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (82/86)
• Missing viewport meta tag - page may not be mobile-friendly

8 issues found

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Crawlability

Sitemap

robots.txt

12 rules

Sponsored

Security Score

36%Critical

Interactive

HTTPS

No WAF

73d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

WoTrus CA Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

15.04.2025

Valid Until

01.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (3)

*.caixin.com*.blog.caixin.comcaixin.com

SHA-256 Fingerprint

05:F5:A7:72:CC:33:5D:E0:0A:03:94:43:A0:C4:0D:CF:A0:9D:80:49...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

age

cache-control

🔴 No Cache(no-cache)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

ct-transfer-encoding

date

Tue, 17 Feb 2026 19:10:48 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mailb.caixin.com

maila.caixin.com

Domain Information

caixin.com

Domain Age

23y 5m

Created

24.09.2002

Expires

24.09.2035

Last Updated

04.01.2026

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

DNSSEC

Not Enabled

Typography & Readability

微软雅黑

43/100

Readability

/30

32/40

16px · LH 1.35

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

微软雅黑

Sans

Body Font

微软雅黑

Sans16px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

16px

Minor Second

Scale

✅ Excellent readability: 16px 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.

⚠️ Cramped layout: 61 elements lack adequate spacing.

✅ 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

16 Resources

Scripts

Styles

Async

Defer

Top Script Sources

file.caixin.com(9)tjs.sjs.sinajs.cn(1)api.weibo.com(1)dup.baidustatic.com(1)files.caixin.com(1)

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Last analyzed: 17 Feb 2026 at 19:11

Historical Analysis & Change Tracking