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

chinaz.com

https://chinaz.com· First analyzed 11 Feb 2026· Updated 11 Feb 2026

Export

chinaz.com

Mobile

Sponsored

Hosting Provider

Chinanet FJ

IP Address

117.25.139.77

Server Location

🇨🇳 Wenquan, China

ASN

AS4134

Organization

Chinanet FJ

Server

OpenResty

Nameservers

ns1.dnsv5.com.ns2.dnsv5.com.

Performance

Page Speed

2 KB

61 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Chinanet FJ

Technology Stack

5 Technologies Detected

Libraries

CSS Frameworks

Analytics

Web Servers

Frameworks

SEO Analysis

F35/100

chinaz.comchinaz.com

站长之家 - 站长资讯-我们致力于为中文网站提供动力！

站长之家(中国站长站)为个人站长与企业网络提供全面的站长资讯、源代码程序下载、海量建站素材、强大的搜索优化辅助工具、网络产品设计与运营理念以及一站式网络解决方案，十年来我们一直致力为中文网站提供动力。

Title Length27 chars

Recommended: 50-60 chars

Description Length100 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Missing viewport meta tag - page may not be mobile-friendly

9 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

1 rules

Allows all crawlers

Sponsored

Security Score

36%Critical

Interactive

HTTPS

No WAF

178d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

TrustAsia Technologies, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

15.07.2025

Valid Until

08.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.chinaz.comchinaz.com

SHA-256 Fingerprint

57:1F:67:15:9F:04:37:97:31:44:90:8F:D9:D2:DB:5D:86:1C:BE:12...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Wed, 11 Feb 2026 13:14:34 GMT

etag

W/"1dc9b584ca8a0bc"

last-modified

Wed, 11 Feb 2026 13:14:06 GMT

server

openresty

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mxbiz1.qq.com

mxbiz2.qq.com

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

PingFangSC-Medium + -apple-system

56/100

Readability

/30

20/40

13px · LH 1.54

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

PingFangSC-Medium

Sans

Body Font

-apple-system

Sans13px

Contrast Ratio

Reading Comfort

~77 CPL

Optimal (45–75)

22px

24px

15px

13px

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

✅ Optimal line spacing: 1.54 ratio ensures comfortable reading.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ Optimal line length: ~77 characters per line is comfortable to read.

⚠️ Cramped layout: 86 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Microsoft ClarityFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

15 Resources

Scripts

Styles

Async

Defer

Top Script Sources

img.chinaz.com(6)a2put.chinaz.com(2)scripts.clarity.ms(1)clarity.ms(1)s3a.pstatp.com(1)

Sponsored

Last analyzed: 11 Feb 2026 at 13:15

Historical Analysis & Change Tracking