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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zjol.com.cn

https://zjol.com.cn· First analyzed 16 Feb 2026· Updated 16 Feb 2026

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zjol.com.cn

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Hosting Provider

Zhejiangzaixian News

IP Address

60.190.240.200

Server Location

🇨🇳 Hangzhou, China

ASN

AS4134

Organization

Zhejiangzaixian News

Nameservers

vip4.alidns.com.vip3.alidns.com.

Performance

Page Speed

200 KB

67 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Zhejiangzaixian News

Technology Stack

2 Technologies Detected

Libraries

jQueryv1.12.4

CSS Frameworks

Tailwind CSS

SEO Analysis

D41/100

zjol.com.cnzjol.com.cn

浙江在线-浙江省委省政府新闻门户网站

浙江在线是国务院新闻办确定的地方重点新闻网站，浙江省省级重点新闻网站和综合性门户网站。网站以“权威媒体、大众网站”为基本定位，内容影响力和经营实力已跃居全国地方网媒前列。2011年9月29日，浙江在线新闻网站纳入“浙报传媒”整体上市，成为国务院新闻办首批十家转企改制新闻网站中第一家成功登陆a股的网络媒体。

Title Length18 chars

Recommended: 50-60 chars

Description Length153 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (18/35)

6 issues found

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Security Score

36%Critical

Interactive

HTTPS

No WAF

25d

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/2

Valid From

24.02.2025

Valid Until

13.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.zjol.com.cnzjol.com.cn

SHA-256 Fingerprint

FC:76:A4:B0:32:1C:FD:45:3C:1B:87:3D:29:6D:9A:29:81:44:C6:8F...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Mon, 16 Feb 2026 22:07:19 GMT

strict-transport-security

max-age=31536000

vary

Accept-Encoding

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mxn.mxhichina.com

mxw.mxhichina.com

Domain Information

zjol.com.cn

DNSSEC

Not Enabled

Typography & Readability

Microsoft Yahei

43/100

Readability

/30

32/40

14px · LH 1.71

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Microsoft Yahei

Sans

Body Font

Microsoft Yahei

Sans14px

Contrast Ratio

Reading Comfort

~56 CPL

Optimal (45–75)

16px

14px

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

✅ Optimal line spacing: 1.71 ratio ensures comfortable reading.

✅ Good performance: Using 1 font families keeps load times fast.

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

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

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Scripts & Styles

17 Resources

Scripts

Styles

Async

Defer

Top Script Sources

weixin.zjol.com.cn(3)static.zjol.com.cn(3)zjol.com.cn(3)hm.baidu.com(1)cdn-getuigw.getui.com(1)

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Last analyzed: 16 Feb 2026 at 22:07

Historical Analysis & Change Tracking