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

csair.com

https://csair.com· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

csair.com

Sponsored

Hosting Provider

China Mobile Communications Corporation

IP Address

183.236.6.196

Server Location

🇨🇳 Guangzhou, China

ASN

AS9808

Organization

China Mobile Communications Corporation

Server

OpenResty

Nameservers

csans4.cs-air.com.csans6.cs-air.com.csans3.cs-air.com.csans1.cs-air.com.+2 more

Performance

Page Speed

408 KB

69 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

China Mobile Communications Corporation

Technology Stack

4 Technologies Detected

Libraries

CSS Frameworks

Analytics

Web Servers

SEO Analysis

D52/100

csair.comcsair.com

中国南方航空官网 - 南航机票预订_飞机票查询_航班查询_特价机票

中国南方航空为您提供国内国际飞机票查询及票价信息,包括飞机票预订、机票改签、每月28日南航明珠会员服务和低价国内国际机票、往返机票、打折机票及航班信息.是国内专业的订机票及机票查询网站,南航全国客服热线95539.

Title Length33 chars

Recommended: 50-60 chars

Description Length107 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (24/35)

6 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

3 rules

Sitemap reference found

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

62d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

24.03.2025

Valid Until

23.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (8)

*.csair.cncsair.cn*.csair.comcsair.com*.csairgroup.cncsairgroup.cn*.tapd.csair.cntapd.csair.cn

SHA-256 Fingerprint

FC:54:C0:C6:D3:74:25:C0:07:38:3F:51:82:DA:14:09:0A:3C:7F:0E...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-length

3371

content-type

text/html; charset=UTF-8

date

Fri, 20 Feb 2026 04:11:53 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (3)

smtp1.cs-air.com

mx1.csair.com

mx2.csair.com

Domain Information

csair.com

Domain Age

28y 6m

Created

26.08.1997

Expires

25.08.2031

Last Updated

10.01.2025

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

微软雅黑

31/100

Readability

/30

10/40

13px · LH --

Hierarchy

/20

20/25

1.85x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

微软雅黑

Sans24px

Body Font

微软雅黑

Sans13px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

24px

18px

14px

13px

❌ Critical: 13px body text is too small. Increase to at least 14px.

✅ Good hierarchy: Clear distinction between headlines and body text.

✅ 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: 19 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

.(6)csair.com(5)local(3)b2c.csair.com(1)app.csair.com(1)

Sponsored

Last analyzed: 20 Feb 2026 at 04:12

Historical Analysis & Change Tracking